Electricians work with electrical systems and equipment, performing tasks like installing and maintaining wiring systems. They must understand electrical theory, be able to interpret blueprints and electrical codes, and work safely with high voltage. The work of electricians is important for powering modern technology and infrastructure.
Benjamin Franklin was shocked when he discovered electricity through his experiments with a key, kite, and Leyden jar. He invented the lightning rod to protect buildings from lightning strikes. Michael Faraday later discovered that electricity and magnets are related when he produced electricity by moving a magnet through a copper wire, creating an electromagnet. Electricity is generated from both renewable resources like solar, wind, and hydropower as well as nonrenewable resources like coal, natural gas, and nuclear power.
This document provides information about Nikola Tesla and Thomas Edison, including their biographies and major inventions. Tesla is credited with inventing alternating current, which became the standard for electric power transmission. He developed technologies like remote control, X-rays, and wireless transmission. Edison developed innovations like the phonograph, motion picture camera, and long-lasting incandescent light bulb. Both made major contributions to electrical engineering, but had differing approaches - Tesla relied more on theory while Edison used trial and error. Their inventions transformed industries and remain influential today in technologies like power grids and electronics.
The document provides an overview of the electrician profession, including what electricity is, its history, types (e.g. direct current, alternating current), uses, and importance. It discusses what electricians do, their training and qualifications, working conditions, job outlook, and salary. Electricians work with electrical systems and ensure the safe transmission of electricity in various settings like construction, manufacturing, and more. They earn on average $22.24 per hour working for local governments. The document emphasizes the importance of electricity in modern life and electricians' role in enabling its safe use.
solar energy and how to help poor with sun energy pptabhi4kismat1
India faces acute energy scarcity that hinders growth, but renewable energy can help. Solar power in particular has potential due to India's climate, and could provide 18% of capacity by addressing challenges like grid integration and high costs. For poor people, solar technologies can help as the upfront costs are reasonable for small loads and there are no running costs, allowing the system to pay for itself in 5-7 years. Widespread adoption of renewable energy could power India and support its development.
Power Point Persentention (PPT) on soloar power.ssuser3bad8c
Hey there this might help you in your school project of solar power or solar energy or non renewable energy.
I made this ppt to submit for my school project.
This document outlines a week-long unit plan for a 4th grade class of 24 students with diverse abilities and learning styles. The unit aims to teach students about static electricity, electric currents, circuits, magnets, and electromagnets. Each day focuses on a different concept through hands-on activities like using balloons to demonstrate static electricity, creating "squishy circuits", and building an electromagnet. By the end of the week, students will work in teams to create a light-up poster displaying what they have learned.
The document describes a foldable solar charger with an Arduino-based solar tracking device. It aims to determine if the device can charge phones and if the tracking feature improves charging rates. Testing found the tracking model charged phones faster, with a mean rate of 18% in 1 hour versus 12.4% without tracking. The tracking model also performed better over 2 hours. The document concludes the device could be useful during power outages and recommends further testing a power storage option.
This document discusses different sources of energy including electricity, static electricity, electric current, conductors and insulators. It also discusses other energy sources like solar, hydroelectric, wind, tidal, geothermal, nuclear, and fossil fuels which are classified as either renewable or nonrenewable. The document recommends ways to conserve energy such as turning off lights and unplugging appliances when not in use, using public transportation, recycling, and avoiding unnecessary trips.
Benjamin Franklin was shocked when he discovered electricity through his experiments with a key, kite, and Leyden jar. He invented the lightning rod to protect buildings from lightning strikes. Michael Faraday later discovered that electricity and magnets are related when he produced electricity by moving a magnet through a copper wire, creating an electromagnet. Electricity is generated from both renewable resources like solar, wind, and hydropower as well as nonrenewable resources like coal, natural gas, and nuclear power.
This document provides information about Nikola Tesla and Thomas Edison, including their biographies and major inventions. Tesla is credited with inventing alternating current, which became the standard for electric power transmission. He developed technologies like remote control, X-rays, and wireless transmission. Edison developed innovations like the phonograph, motion picture camera, and long-lasting incandescent light bulb. Both made major contributions to electrical engineering, but had differing approaches - Tesla relied more on theory while Edison used trial and error. Their inventions transformed industries and remain influential today in technologies like power grids and electronics.
The document provides an overview of the electrician profession, including what electricity is, its history, types (e.g. direct current, alternating current), uses, and importance. It discusses what electricians do, their training and qualifications, working conditions, job outlook, and salary. Electricians work with electrical systems and ensure the safe transmission of electricity in various settings like construction, manufacturing, and more. They earn on average $22.24 per hour working for local governments. The document emphasizes the importance of electricity in modern life and electricians' role in enabling its safe use.
solar energy and how to help poor with sun energy pptabhi4kismat1
India faces acute energy scarcity that hinders growth, but renewable energy can help. Solar power in particular has potential due to India's climate, and could provide 18% of capacity by addressing challenges like grid integration and high costs. For poor people, solar technologies can help as the upfront costs are reasonable for small loads and there are no running costs, allowing the system to pay for itself in 5-7 years. Widespread adoption of renewable energy could power India and support its development.
Power Point Persentention (PPT) on soloar power.ssuser3bad8c
Hey there this might help you in your school project of solar power or solar energy or non renewable energy.
I made this ppt to submit for my school project.
This document outlines a week-long unit plan for a 4th grade class of 24 students with diverse abilities and learning styles. The unit aims to teach students about static electricity, electric currents, circuits, magnets, and electromagnets. Each day focuses on a different concept through hands-on activities like using balloons to demonstrate static electricity, creating "squishy circuits", and building an electromagnet. By the end of the week, students will work in teams to create a light-up poster displaying what they have learned.
The document describes a foldable solar charger with an Arduino-based solar tracking device. It aims to determine if the device can charge phones and if the tracking feature improves charging rates. Testing found the tracking model charged phones faster, with a mean rate of 18% in 1 hour versus 12.4% without tracking. The tracking model also performed better over 2 hours. The document concludes the device could be useful during power outages and recommends further testing a power storage option.
This document discusses different sources of energy including electricity, static electricity, electric current, conductors and insulators. It also discusses other energy sources like solar, hydroelectric, wind, tidal, geothermal, nuclear, and fossil fuels which are classified as either renewable or nonrenewable. The document recommends ways to conserve energy such as turning off lights and unplugging appliances when not in use, using public transportation, recycling, and avoiding unnecessary trips.
1) Atoms are made up of protons, neutrons, and electrons. Protons have a positive charge, electrons have a negative charge, and neutrons have no charge.
2) When an atom gains or loses electrons, its overall charge changes. Static electricity occurs when an imbalance of charges builds up in objects.
3) During thunderstorms, positive and negative charges separate in clouds and between clouds and the ground, causing lightning when the charge difference becomes too great.
Nikola Tesla: The Overlooked Wizard of ElectricityAidan Vosz
Not many people around the world have heard of Nikola Tesla? Perhaps young children have read about Thomas Alva Edison and Alexander Graham Bell but not about Tesla, a Serbian-American inventor. Many of the things you know about electricity would be impossible if not for Tesla’s dedication to action and commitment to science. Indeed, he was the man who brought the idea of electrical energy to many people’s consciousness.
Electricity is a form of energy that allows electrons to flow through conductors, producing static electricity from charge accumulation or electric current. Materials that conduct electricity well include copper and aluminum, while insulators like plastic and rubber do not allow electron flow. Most electricity is generated through electromagnetic induction using coils around magnets. Energy sources can be renewable like solar, wind, and hydroelectric or nonrenewable like fossil fuels and nuclear. Conserving energy reduces consumption across residential, commercial, industrial and transportation sectors through practices like turning off lights when not in use, unplugging appliances, using public transit, recycling, and biking or walking short distances.
This document discusses wireless electricity or Witricity. It provides an introduction to Witricity, describing it as the wireless delivery of electrical power over room-scale distances with high efficiency. The document outlines the history of wireless power dating back to Nikola Tesla's proposals in 1891. It explains the basic principles of Witricity which uses resonant magnetic coupling between transmitter and receiver coils oscillating at the same frequency. Applications are discussed along with advantages such as being unaffected by weather and allowing charging of devices anywhere in range.
Electricity 2.0 - Using The Lessons Of the Web To Improve Our Energy NetworksTom Raftery
Nicholas Carr advised Internet companies to become more like utilities. In this talk I turn this on its head and show that the next generation Electricity companies will need to incorporate lessons from Web 2.0 to survive in the age of renewables.
Nikola Tesla was a Croatian inventor and engineer born in 1856 who made groundbreaking contributions to electrical engineering. He developed an interest in physics and electricity while studying at the Polytechnic Institute in Graz, Austria. In 1882, Tesla invented the first alternating current (AC) motor while walking in a park, revolutionizing how electricity could be generated and distributed. He later developed AC power systems and licensed his patents to George Westinghouse. This started a "war of currents" between Tesla, who supported AC power, and Thomas Edison, who advocated for direct current power. Though Edison tried to discredit Tesla, AC power ultimately became the standard used worldwide today.
Electricity allows us to perform daily activities and powers modern society. It is harnessed from natural lightning and enables lighting, appliances, vehicles, computers, and more. Without electricity, our world would be drastically changed as most power would be lost and people would struggle. Electricity has become an essential part of life for individuals and across societies globally.
The document discusses how buildings are a major contributor to energy usage and emissions in the United States. It notes that the residential and commercial sectors account for over $125 billion in annual energy costs, while buildings produce over 30% of nationwide CO2 emissions. However, public awareness of buildings' environmental impact remains low. The document concludes by arguing new policies from the Obama administration aim to improve building efficiency and help transition the country to more sustainable energy practices.
- Witricity refers to the ability to transmit electrical energy wirelessly through magnetic field resonance.
- The document discusses the history of wireless electricity from Nikola Tesla's initial proposals in 1891 to current research at MIT.
- It describes how witricity works using magnetic coils that resonate to transmit power from a source to a receiver without wires.
- Potential applications include wireless charging of devices, electric vehicles, and creating wire-free power in homes and "smart cities." The document reviews both the advantages of eliminating wires and batteries and some disadvantages like initial cost and safety constraints.
Materials that allow electricity to flow through them easily are called electrical conductors, while materials that do not allow electricity to flow are called insulators. An online experiment was conducted to test different objects and see which ones completed the electrical circuit by conducting electricity, and which did not complete the circuit because they insulated the electricity. The experiment helped determine whether each object was a conductor or insulator of electricity.
The document summarizes a talk on technocracy in the domestic space and the "smart home illusion." It discusses how homes have become increasingly electrified over the past century, from electric lights and appliances to smart connected devices. However, these smart homes still consume large amounts of energy and may increase demand. The talk addresses issues like how to encourage energy-efficient behaviors and support research for degrowth while allowing other countries to develop. It questions how to disentangle homes from their inhabitants to make meaningful recommendations and build valid international tools and methods.
Wireless electricity was originally conceived by Nikola Tesla in the late 1800s using electromagnetic induction but it was not practical until 2007 when MIT scientists demonstrated transferring 60 watts of power wirelessly over 7 feet. This technology could allow devices to charge constantly through the air and eliminate clutter from power cords by placing devices on charging pads anywhere in homes or offices. However, issues around standardization, security, and costs would need to be addressed for wireless electricity to become widely adopted.
Nikola Tesla, born in 1856, was a pioneer in electrical engineering who invented the alternating-current electric system. He developed alternating-current motors and transformers. In 1883 he constructed his first induction motor. Though he initially worked with Thomas Edison, they parted ways due to differing visions. In the 1890s, Tesla invented the Tesla coil, which is still used in electronics. In 2007, MIT scientists demonstrated wireless electricity transfer over short distances, reviving interest in an idea Tesla had explored. If perfected, wireless power could eliminate wired charging and power cords. However, issues around standardization, equipment retrofitting costs, and potential energy theft would need to be addressed before widespread adoption.
Wind energy harnesses the kinetic energy of wind to generate electricity. It is a renewable and clean source of energy that does not produce emissions or pollutants unlike fossil fuels. While the United States is a large user of wind power, disadvantages include the infrastructure needed to transport electricity from remote wind farms and a dependence on sufficient wind speeds to power turbines.
This document contains a list of 5 questions about different forms of electricity production and transmission: what electricity is, what a power grid is, how water is used to produce electricity, how solar panels work, and what geothermal power is and how it is produced. The questions are meant to guide further reading and understanding of these important topics in electricity.
This document defines basic electrical terms and concepts and describes some of the key contributors to the development of electricity over the past 200+ years. It explains that conductors are substances that contain free electrons that allow the flow of electricity, such as copper and aluminum, while insulators do not contain free electrons and do not conduct electric current, like wood and rubber. It also defines electric current as the amount of charge passing through a conductor per unit time, measured in amperes, and electric potential and potential difference in terms of the work required to move electric charges between two points in an electric field.
Solar energy can be harnessed through both solar thermal and solar photovoltaic (PV) systems. Solar thermal systems use sunlight to heat water or spaces for uses like cooking and water heating. PV systems convert sunlight directly into electricity using solar panels made of silicon cells. Both types of systems provide environmental benefits over fossil fuels and can be implemented on both small and large scales to meet energy needs. Student experiments can explore variables that impact the efficiency of solar collectors and cells.
Solar energy can be harnessed through both solar thermal and solar photovoltaic (PV) systems. Solar thermal systems use sunlight to heat water or spaces for uses like cooking and water heating. PV systems convert sunlight directly into electricity using solar panels made of silicon cells. Both types of systems provide environmental benefits over fossil fuels and can offset utility costs. Students can experiment with designing solar collectors and exploring factors that affect their efficiency.
Energy can take many forms and causes things to happen around us. Potential energy is stored energy something has by virtue of its position or state, like a pencil resting on a desk. Kinetic energy is energy of motion, like a moving pencil. Energy can be in chemical, electrical, heat, light, mechanical, and nuclear forms. An interesting article discusses a company called BlackLight Power that claims to have developed a technology that violates physics by converting water into a cheap, unlimited source of energy using a novel fuel cell and catalyst. However, most scientists are skeptical of this claim.
FORM 4 CHAPTER 5.8 Innovative Efforts in the Design of Equipment Using Chemic...Brenda Ee Xin
The document discusses innovative efforts in using chemical reactions as sources of energy, specifically highlighting fuel cells as a new type of electric cell that uses hydrogen or metal atoms as fuel. Fuel cells have advantages over traditional cells in that they can continuously produce electricity as long as fuel is supplied, and metal fuel cells can be refueled quickly in 10 seconds. The document also notes that fuel cells using hydrogen produce water as the only product, avoiding pollution to the environment.
Energy harvesting by piezoelectricity involves converting mechanical vibrations or movements into electrical energy using piezoelectric materials. These materials generate a voltage when subjected to mechanical stress, such as vibrations from ambient sources like footsteps, machinery, or environmental vibrations. In the context of energy harvesting, piezoelectric devices, often in the form of sensors or transducers, can capture and convert these mechanical vibrations into electrical energy. This technology has applications in powering small electronic devices or sensors in remote locations where traditional power sources may be impractical or unavailable, contributing to the development of self-sustainable and low-power systems.
- The document discusses wireless power transmission, including its history and technologies like microwave and laser transmission. It describes Nikola Tesla's early experiments with wireless power and modern wireless charging technologies.
- The key theories and components of wireless power transmission are explained, such as electromagnetic radiation, antenna basics, phased array antennas, and rectennas. Wireless power is transmitted similarly to radio but with larger antennas and wavelengths.
- Wireless power transmission is compared to other power sources such as solar, nuclear, and fossil fuels. It has advantages over these sources in terms of efficiency, costs, sustainability, and environmental impact. Major challenges include health effects, interference, and implementation complexity.
1) Atoms are made up of protons, neutrons, and electrons. Protons have a positive charge, electrons have a negative charge, and neutrons have no charge.
2) When an atom gains or loses electrons, its overall charge changes. Static electricity occurs when an imbalance of charges builds up in objects.
3) During thunderstorms, positive and negative charges separate in clouds and between clouds and the ground, causing lightning when the charge difference becomes too great.
Nikola Tesla: The Overlooked Wizard of ElectricityAidan Vosz
Not many people around the world have heard of Nikola Tesla? Perhaps young children have read about Thomas Alva Edison and Alexander Graham Bell but not about Tesla, a Serbian-American inventor. Many of the things you know about electricity would be impossible if not for Tesla’s dedication to action and commitment to science. Indeed, he was the man who brought the idea of electrical energy to many people’s consciousness.
Electricity is a form of energy that allows electrons to flow through conductors, producing static electricity from charge accumulation or electric current. Materials that conduct electricity well include copper and aluminum, while insulators like plastic and rubber do not allow electron flow. Most electricity is generated through electromagnetic induction using coils around magnets. Energy sources can be renewable like solar, wind, and hydroelectric or nonrenewable like fossil fuels and nuclear. Conserving energy reduces consumption across residential, commercial, industrial and transportation sectors through practices like turning off lights when not in use, unplugging appliances, using public transit, recycling, and biking or walking short distances.
This document discusses wireless electricity or Witricity. It provides an introduction to Witricity, describing it as the wireless delivery of electrical power over room-scale distances with high efficiency. The document outlines the history of wireless power dating back to Nikola Tesla's proposals in 1891. It explains the basic principles of Witricity which uses resonant magnetic coupling between transmitter and receiver coils oscillating at the same frequency. Applications are discussed along with advantages such as being unaffected by weather and allowing charging of devices anywhere in range.
Electricity 2.0 - Using The Lessons Of the Web To Improve Our Energy NetworksTom Raftery
Nicholas Carr advised Internet companies to become more like utilities. In this talk I turn this on its head and show that the next generation Electricity companies will need to incorporate lessons from Web 2.0 to survive in the age of renewables.
Nikola Tesla was a Croatian inventor and engineer born in 1856 who made groundbreaking contributions to electrical engineering. He developed an interest in physics and electricity while studying at the Polytechnic Institute in Graz, Austria. In 1882, Tesla invented the first alternating current (AC) motor while walking in a park, revolutionizing how electricity could be generated and distributed. He later developed AC power systems and licensed his patents to George Westinghouse. This started a "war of currents" between Tesla, who supported AC power, and Thomas Edison, who advocated for direct current power. Though Edison tried to discredit Tesla, AC power ultimately became the standard used worldwide today.
Electricity allows us to perform daily activities and powers modern society. It is harnessed from natural lightning and enables lighting, appliances, vehicles, computers, and more. Without electricity, our world would be drastically changed as most power would be lost and people would struggle. Electricity has become an essential part of life for individuals and across societies globally.
The document discusses how buildings are a major contributor to energy usage and emissions in the United States. It notes that the residential and commercial sectors account for over $125 billion in annual energy costs, while buildings produce over 30% of nationwide CO2 emissions. However, public awareness of buildings' environmental impact remains low. The document concludes by arguing new policies from the Obama administration aim to improve building efficiency and help transition the country to more sustainable energy practices.
- Witricity refers to the ability to transmit electrical energy wirelessly through magnetic field resonance.
- The document discusses the history of wireless electricity from Nikola Tesla's initial proposals in 1891 to current research at MIT.
- It describes how witricity works using magnetic coils that resonate to transmit power from a source to a receiver without wires.
- Potential applications include wireless charging of devices, electric vehicles, and creating wire-free power in homes and "smart cities." The document reviews both the advantages of eliminating wires and batteries and some disadvantages like initial cost and safety constraints.
Materials that allow electricity to flow through them easily are called electrical conductors, while materials that do not allow electricity to flow are called insulators. An online experiment was conducted to test different objects and see which ones completed the electrical circuit by conducting electricity, and which did not complete the circuit because they insulated the electricity. The experiment helped determine whether each object was a conductor or insulator of electricity.
The document summarizes a talk on technocracy in the domestic space and the "smart home illusion." It discusses how homes have become increasingly electrified over the past century, from electric lights and appliances to smart connected devices. However, these smart homes still consume large amounts of energy and may increase demand. The talk addresses issues like how to encourage energy-efficient behaviors and support research for degrowth while allowing other countries to develop. It questions how to disentangle homes from their inhabitants to make meaningful recommendations and build valid international tools and methods.
Wireless electricity was originally conceived by Nikola Tesla in the late 1800s using electromagnetic induction but it was not practical until 2007 when MIT scientists demonstrated transferring 60 watts of power wirelessly over 7 feet. This technology could allow devices to charge constantly through the air and eliminate clutter from power cords by placing devices on charging pads anywhere in homes or offices. However, issues around standardization, security, and costs would need to be addressed for wireless electricity to become widely adopted.
Nikola Tesla, born in 1856, was a pioneer in electrical engineering who invented the alternating-current electric system. He developed alternating-current motors and transformers. In 1883 he constructed his first induction motor. Though he initially worked with Thomas Edison, they parted ways due to differing visions. In the 1890s, Tesla invented the Tesla coil, which is still used in electronics. In 2007, MIT scientists demonstrated wireless electricity transfer over short distances, reviving interest in an idea Tesla had explored. If perfected, wireless power could eliminate wired charging and power cords. However, issues around standardization, equipment retrofitting costs, and potential energy theft would need to be addressed before widespread adoption.
Wind energy harnesses the kinetic energy of wind to generate electricity. It is a renewable and clean source of energy that does not produce emissions or pollutants unlike fossil fuels. While the United States is a large user of wind power, disadvantages include the infrastructure needed to transport electricity from remote wind farms and a dependence on sufficient wind speeds to power turbines.
This document contains a list of 5 questions about different forms of electricity production and transmission: what electricity is, what a power grid is, how water is used to produce electricity, how solar panels work, and what geothermal power is and how it is produced. The questions are meant to guide further reading and understanding of these important topics in electricity.
This document defines basic electrical terms and concepts and describes some of the key contributors to the development of electricity over the past 200+ years. It explains that conductors are substances that contain free electrons that allow the flow of electricity, such as copper and aluminum, while insulators do not contain free electrons and do not conduct electric current, like wood and rubber. It also defines electric current as the amount of charge passing through a conductor per unit time, measured in amperes, and electric potential and potential difference in terms of the work required to move electric charges between two points in an electric field.
Solar energy can be harnessed through both solar thermal and solar photovoltaic (PV) systems. Solar thermal systems use sunlight to heat water or spaces for uses like cooking and water heating. PV systems convert sunlight directly into electricity using solar panels made of silicon cells. Both types of systems provide environmental benefits over fossil fuels and can be implemented on both small and large scales to meet energy needs. Student experiments can explore variables that impact the efficiency of solar collectors and cells.
Solar energy can be harnessed through both solar thermal and solar photovoltaic (PV) systems. Solar thermal systems use sunlight to heat water or spaces for uses like cooking and water heating. PV systems convert sunlight directly into electricity using solar panels made of silicon cells. Both types of systems provide environmental benefits over fossil fuels and can offset utility costs. Students can experiment with designing solar collectors and exploring factors that affect their efficiency.
Energy can take many forms and causes things to happen around us. Potential energy is stored energy something has by virtue of its position or state, like a pencil resting on a desk. Kinetic energy is energy of motion, like a moving pencil. Energy can be in chemical, electrical, heat, light, mechanical, and nuclear forms. An interesting article discusses a company called BlackLight Power that claims to have developed a technology that violates physics by converting water into a cheap, unlimited source of energy using a novel fuel cell and catalyst. However, most scientists are skeptical of this claim.
FORM 4 CHAPTER 5.8 Innovative Efforts in the Design of Equipment Using Chemic...Brenda Ee Xin
The document discusses innovative efforts in using chemical reactions as sources of energy, specifically highlighting fuel cells as a new type of electric cell that uses hydrogen or metal atoms as fuel. Fuel cells have advantages over traditional cells in that they can continuously produce electricity as long as fuel is supplied, and metal fuel cells can be refueled quickly in 10 seconds. The document also notes that fuel cells using hydrogen produce water as the only product, avoiding pollution to the environment.
Energy harvesting by piezoelectricity involves converting mechanical vibrations or movements into electrical energy using piezoelectric materials. These materials generate a voltage when subjected to mechanical stress, such as vibrations from ambient sources like footsteps, machinery, or environmental vibrations. In the context of energy harvesting, piezoelectric devices, often in the form of sensors or transducers, can capture and convert these mechanical vibrations into electrical energy. This technology has applications in powering small electronic devices or sensors in remote locations where traditional power sources may be impractical or unavailable, contributing to the development of self-sustainable and low-power systems.
- The document discusses wireless power transmission, including its history and technologies like microwave and laser transmission. It describes Nikola Tesla's early experiments with wireless power and modern wireless charging technologies.
- The key theories and components of wireless power transmission are explained, such as electromagnetic radiation, antenna basics, phased array antennas, and rectennas. Wireless power is transmitted similarly to radio but with larger antennas and wavelengths.
- Wireless power transmission is compared to other power sources such as solar, nuclear, and fossil fuels. It has advantages over these sources in terms of efficiency, costs, sustainability, and environmental impact. Major challenges include health effects, interference, and implementation complexity.
Wireless communications is a type of data communication that is performed and delivered wirelessly.This is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.This Presentation is about ' WIRELESS POWER TRANSMISSION ' which is the most important & interesting topic in electrical & electronics branch.
- The document discusses wireless power transmission, including its history and technologies like microwave and laser transmission. It describes Nikola Tesla's early experiments with wireless power and more recent developments.
- The key differences between microwave and laser transmission are explained, with microwaves being more developed currently but lasers having the potential for higher efficiency.
- The theory section covers the physics of wireless power transmission using antennas, phased arrays, and diffraction. It also discusses efficiency and limitations.
- Comparisons are made between wireless power and other energy sources like solar, nuclear, and fossil fuels in terms of efficiency, costs, sustainability, and environmental impacts.
The document summarizes experiments conducted with various electrostatic devices. Students designed and tested an electrostatic generator called the Kelvin generator that was able to generate over 1000 volts of charge. They also tested two electrostatic motors: a corona motor that spun faster when sharp copper wires were added, and a ping pong ball motor that achieved rotations over 300 rpm and worked best. The experiments helped the students gain a better understanding of electrostatics and its applications.
The power generation by using piezoelectric effectImunique123
Generating electricity by walking or running on piezoelectric materials and that energy get stored in batteries and that can be used for street lights.It is non-conventional power generation system , eco-friendly and no pollution.
It can implement easily and low budget project also.As we know our natural resources are vanishing and we need another ways to produce electricity and this is most eco-friendly and cheap.Japan and China has worked on this project
This document discusses wireless charging for electric vehicles. It begins with an introduction to electric vehicles and the need for wireless charging to overcome limitations of wired charging systems, such as long charging times. It then provides details on the history of wireless power transmission dating back to Nikola Tesla's experiments. The document explains that wireless charging works by generating an electromagnetic field between a power transmitter in the road and a receiving device in the vehicle. It discusses the construction of roads with wireless charging technology and the advantages of lower operating costs and pollution compared to gas vehicles, as well as challenges like high initial installation costs.
This document summarizes a seminar presentation on plastic solar cells. It begins with an introduction to plastic solar cells, which were first introduced in 1986 and use conducting plastics and flexible substrates. It then describes conventional solar cells made from semiconductors that have high efficiency but are expensive to produce. The working principle of a p-n junction in conventional solar cells is explained. Device architectures for plastic solar cells include simple metal-insulator-metal designs and more complex heterojunction designs. The working principle involves photons exciting electron-hole pairs that are split at interfaces. Advantages of plastic solar cells include lower cost of manufacturing and being more flexible. The conclusion is that plastic solar cells can work on cloudy days and are
This document summarizes a seminar presentation on plastic solar cells. It begins with an introduction to plastic solar cells, which were first introduced in 1986 and use conducting plastics and flexible substrates. It then describes conventional solar cells made from semiconductors, which have high efficiency but are expensive to produce. The working principle of a basic p-n junction solar cell is explained. The document then discusses the device architectures, working principles, advantages and drawbacks of plastic solar cells, which use organic semiconductors and conjugated polymers. It concludes by stating that while plastic solar cells are more compact and effective than conventional cells, their current high cost is a major drawback that may be solved in the future.
This document contains the Report for a Synchronizing Panel that I made for Diploma main project. It carries the complete detail about parallel operation AC Generators aka Alternators.
This document presents information on wireless charging technology. It discusses how wireless charging uses electromagnetic fields to transfer energy between two objects, such as a charging station and electrical device, through inductive coupling. The document provides a brief history of wireless power transmission, including Nikola Tesla proposing the concept in 1890 and MIT researchers powering a light bulb in 2007. It describes how wireless systems use inductive coupling between planar coils to transfer power from a transmitter to receiver. The document notes that wireless power systems are evolving to allow for more convenient charging of smartphones and other mobile devices without needing separate chargers.
This presentation proposes harvesting energy from human footsteps using piezoelectric materials. It discusses applications of piezoelectric energy harvesting in places with foot traffic like roads, rail stations, and offices. Piezoelectric sensors convert mechanical energy from footsteps into electrical energy, which is stored in a lead acid battery and used to power devices through an inverter. The piezoelectric effect and a company called Pavegen that has developed piezoelectric floor tiles are described. In conclusion, harvesting energy from human footsteps could provide an affordable energy solution for Bangladesh by managing energy usage.
Iaetsd electric power generation using piezoelectric crystalIaetsd Iaetsd
The document discusses using piezoelectric crystals to generate electric power. Piezoelectric materials can convert ambient vibration into electrical power. When mechanical stress is applied, piezoelectric crystals generate electrical potentials that can be harvested as a source of power. The document proposes using piezoelectric generators placed under foot traffic areas or attached to moving objects to capture kinetic energy and convert it into usable electric power through a voltage conversion and regulation process. Experimental results showed piezoelectric generators were able to charge a battery and power small electronic devices.
device generating elecricity by footstep using peizoelectic materialNihir Agarwal
This document summarizes a method for generating electricity from human footstep using piezoelectric materials. It discusses how piezoelectric sensors in footwear or flooring can convert the mechanical energy from walking or running into electrical energy. The document evaluates different piezoelectric materials and connection configurations to determine the most effective design. A series-parallel connection of piezoelectric crystals is found to generate both a usable voltage and current from footstep force. This approach aims to harness wasted human energy for power generation in a cleaner and more sustainable way.
The document discusses nuclear batteries, which generate electricity through radioactive decay without relying on nuclear fission. It describes how nuclear batteries work via betavoltaics or direct charging generators using radioactive isotopes like radium-226 as fuel. Nuclear batteries have long lifespans of over 10 years, are compact and lightweight, and produce reliable electricity making them well-suited for applications in space, medical devices, and mobile electronics where extended battery life is needed. However, high production costs and regulatory issues related to radioactive materials need to be addressed for nuclear batteries to gain widespread use.
The document discusses key concepts related to electric potential energy including:
- Electric potential energy is a fundamental concept in physics that describes the energy stored in an electric field and has applications like powering devices and starting cars.
- Key concepts like electric potential, electric potential energy, equipotential surfaces, and potential gradient help explain the behavior of charged particles in electric fields and are important for applications in circuits, lightning protection, medical devices, and more.
- Understanding these electric potential energy concepts allows for the design of technologies that utilize electric fields.
WiTricity uses magnetic induction to wirelessly transfer electrical power between two coils. It works by powering a transmitter coil that generates oscillating magnetic fields which induce electrical currents in a nearby receiver coil to power devices without wires or batteries. This can eliminate e-waste from batteries and reduce energy losses from wired transmission. Potential applications include wirelessly charging phones, laptops, vehicles and powering devices in hazardous environments without wires. Benefits include more reliable power delivery, convenience of not needing to plug devices in or change batteries, and environmental friendliness from reducing battery usage and transmission losses.
In this presentation, basics of solar cells, what is piezoelectricity and its application, followed by basics of thermoelectricity and its application would be discussed.
5. Thesis
• Electricians are important figures in
modern day because our world revolves
around electricity. By doing minor electrical
work around my house I have proved that
this is a serious matter to deal with and
that only professionals should do this type
of work.
6. Ben Franklin
Key and Kite
http://eightninths.squarespace.com
7. Thomas Edison
Invention of
the light bulb
http://inventors.about.com/library/inventors/bledison.htm
41. Training and
Qualifications
http://www.reikigeorgia.com/images/certificates/apprenticeship.jpg
http://www.inspectrite.net/Master_electrical_license.jpg
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The reason i chose this topic was becasue at first i was planning on going to a tech school and study to be an electrician and hopefully get employed as an electrician but recently my mind has changed.
Electricians, not too well known, are important figures in modern day because our world revolves around electricity. For this reason, I would like to teach you about their profession and electricity in general.
Electrical charges were known to man way before Ben Franklin’s time, but it was his infamous experiment that led to the better usage of electricity in the world in 1752. His experiment consisted of a kite and a key. During a thunderstorm Franklin flew a kite with a key on it and when the lightning stuck it hit the key, it proved that lightning was a source of electricity in the world.
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In 1879 a guy by the name of Thomas Edison invented the electric light bulb. his incandescent lamps took the place of the gas infrastructure. These lamps work by electricity flowing through a small filament in the light bulb making it hot and glow. Some of these lamps were too bright for single rooms.
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Electricity was a mystery to scientists for many years until 1897 where they finally discovered the existence of electrons.
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electrons are the smallest and lightest particle in an atom. They are the negative particle and are in motion around the nucleus and are surround by the electrostatic field Electrons are found in all matter and can determine things such as the conductivity of an object. These electrons travel through different conductors to transfer electricity, and technology enables us to use the energy for different purposes.
Ohm&#x2019;s law is that current equals voltage divided by resistance. This equation can be set up differently say if you were trying to find resistance the equation would be Resistance equals voltage divided by current
while pressure that the electrons are being moved with is the voltage. In the United States, the standard voltage for a wall outlet is 120 volts. The device on the left is used to test the amount of electricity flowing to power the particular thing. Using devices like these, the power company can determine how much energy is being used at one&#x2019;s home, and charge them based on that amount. Another factor in electrical circuits is resistance, which can be toyed with to control the amount of electrons flowing through a circuit.
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The flow of electrons is measured in amperes. It measures the amount of electrical current that exists when a number of electrons move past a given point in one second. Because we can not count that fast we use a device called and ammeter to count the amps of current
Direct Current and Alternating Current are the two types of current flow that can be found in the world. Direct Current represents the current in objects such as batteries because there is always a set direction for the flow of electrons between the positive and negative terminals. How Stuff Works. How Stuff Works Inc., 2010. Web. 1 Mar. 2010.
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On the other hand, Alternating Current represents voltages that can be changed using a device called a transformer. Companies that supply great amounts of power use AC because in this way they can control the amount of power being sent out to people&#x2019;s houses. These power plants generate millions of volts, but sending that much power to a house could easily kill someone. By using AC, they can lower the volts at different points as they get from the plant to the house to ensure people&#x2019;s safety.
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Electrons in general can not do much in creating electricity without the help of a generator. This device consists of a magnet that pushes the electrons in a certain pattern and with a particular pressure. A magnet will cause the electrons in a region to move based on the polarity of that side of the magnet. In electrical circuits, the number of electrons is the current, and the pressure pushing the electrons is the voltage. A generator is used to move these electrons along a line, but they will not be completing any task until an electrical board is put into use.
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Electrical Circuits work in a way where they use the movement of electrons to their advantage to power differen t items. The electrons always desire to move towards the positive side, and the movement of the electrons creates energy. A circuit will combine the electrons movement to a positive area, but make a stop at whatever needs to be powered. An example of this is an electrical razor in which the battery electrons that pass through move through a magnetic field in the razor. When moving through the magnetic field, they create motion through attraction and repulsion to move the motor.
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A series circuit is a circuit where there is only one path for the electrons to travel between two points. All the components of the circuit are in series with each other
In a parallel circuit the electrons have many paths to take and thats what make a parallel and series circuit different A parallel circuit exists whenever two or more components are connected between the same two points
A switch is a device that pretty much operates the circuit but not every circuit has a switch. When the switch is open nothing happens because the circuit is not completed but when closed you completed the circuit and the electron can now start flowing in the designated directed depending on what kind of circuit is being used.
Batteries work through chemical reactions that produce electrons. These kind of reactions are known as electrochemical reactions. When looking at a battery, there is a positive and negative terminal and the electrons collect on the negative side. When a wire is connected between the two, the electrons move as fast as they can from the negative to the positive. When making a circuit, they connect a load, which the electrons will pass through. Depending on the chemical reaction inside the battery, the speed of the electrons flowing will be determined.
The way rechargeable batteries work is simple. Normally when energy is applied to the battery the electron flow goes negative to positive When you reverse the flow during discharge the power is restored. the time it takes to recharge depends on how much electrical energy is allowed in the battery by the charger
Good conductors are objects that electricity is able to pass through easily. One of the most common conductor is copper It is used in wiring house, building and factories. Some other conductors are gold, silver and aluminum. The reason copper is the most preferred choice is because it is not as expensive as gold and silver and is a much better conductor than aluminum
Insulators are the opposite of conductors then do not allow electricity to flow through them easily. These different materials have tightly bound electrons making it hard for electricity to flow through them. materials that fall under this category are wood plastic rubber and glass. The reason they say the safest place to stay in a thunderstorm is a car is because a car has rubber tires and rubber is an insulator
When these electrons travel through electrical wires, they need a safe way to travel back through the circuit. For this reason, they created electrical ground because the earth is a good conductor. Every house and wiring pole will contain a metal wire that sticks into the ground to send the electrons back through the circuit. Without this, the electrons would be flowing around dangerously in a way that can harm people greatly. An article of mine fit into here because when an electrician went to fix a ladies service box there were some hazards the electrical system was grounded properly and because it wasn&#x2019;t grounded properly there was a chance that someone could have been electrocuted or a fire could have started if your house is more than 25 year old than it probably dur for an electrical inspection.
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When jumping cars, the electricity is transferred through two jumper cables that connect the negative terminals to each other and the positive terminals to each other. When doing this, the electrons from the running car can travel to the other car when the broke down car is attempted to turn on. When the key is turned in the ignition, it triggers the function to start up the battery (the chemical reaction). Electrons travel from high to low, and since one car has high amounts of electrons, and one is low, they will travel to the car and start it up.
Light bulbs have a very simple structure. At the base, they have two metal contacts, which connect to the ends of an electrical circuit. The metal contacts are attached to two wires, which are attached to a thin metal filament usually tungsten because of its extremely high melting point. The filament is held up by a glass mount in the middle of the bulb which is filled with an inert gas which is usually argon or neon. As the electricity goes throughout the lightbulb it heats up the filament and it produces light.
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The main difference in a fluorescent bulb is the way that the electrons are excited. In an incandescent bulb, the electrons are excited using heat, and then that energy is converted into light. In a fluorescent bulb, the electrons are excited with the power from the outlet, and then the electrons travel along special gas that are in the bulb. The energy of the electrons movement causes the Mercury (liquid varies in different bulbs) to heat up and become gas. The gas particles crash into the electron particles and cause emission of light through the energy of the collisions. The light that is emitted is ultraviolet, therefore the inside of the bulb is phosphorous coated to allow humans to see the light. These bulbs benefit because they do not heat up like the other ones, and the reaction can continue to go for a long time.
GFCI stands for Ground fault circuit interrupter. BOCA code regulations require these outlet in your house or business when an outlet is near a water source such as a kitchen or bathroom. If the neutral wire and hot wire somehow touch or water enters the outlet, this outlet allows the fuse to heat up faster than the wires so that the fuse burns out before a fire can start or you can receive a deadly shock. On the outlets the left slot is slightly larger than the right slot. The left slot is called neutral, the right side is called hot and the hole is called ground. You can also find a reset button and a test button. The test button allows you to see if the circuit can trip and the reset button resets it.
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the electric eel is one of the few animals on the planet that can make, store and discharge electricity. Inside of the eel is an electric organ. this organ is made up of 5000 to 6000 electroplaques. These electriplaques are like cells in a battery and when they are used in a series that can create a jolt that can measure up to 650 volt depending on the size of eel. They mainly use the electricity for communication and to sense where they are going. Then when it needs to eat it stuns its prey with that large jolt.
static electricity is a motionless electrical charge. When it is low in humidity or a place with a dry climate people people experience staic electricity. If you rub you feet across the carpet and you touch and uncharged object or an object that has an opposite charge a static charge is released. Most static electricity is harmless but can be cause a disturbance when making things because it makes things stick together. Harmful static electricity is lightning
In electrical storms the storm clouds are charged positive on the top and negative on the bottom. They way the clouds got charged is not fully understood but there are some plausible explanations. scientist say that during the water cycle when evaporating water droplets and condensing droplets collide electrons are knocked off creating charge separation. these electrons gather at the bottom of the cloud making it negative the the rising moisture goes to the top making it positive
Electricians design, assemble, install, test and repair electrical fixtures and wiring.
The things they work on provide light, heat, refrigeration, air-conditioning, power, and communications and all of these are used in everyday life. Being an electrician is a very dangerous job because if something goes wrong that person can easily lose their life.
They use blueprints and the blue print indicate the locations of circuits, outlets, panel boards and other equipment
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Construction. 4th ed. 2004. New York: Ferguson, 2004. Print. Career in Focus.
Electricians work both in and outside. Their work can be strenuous from kneeling, bending, standing for long period of time. most electricians work 40 hours a week and some may have to work weekends or nights and some are on call. If they are working outdoor the may work in inclement weather
In high school if you are planning on being an electrician then it is recommended that you go to a tech school for part of the day to learn about the different tools and devices that electricians use in everyday day work. Also they suggest that you should take applied mathematics and sciences so that you can understand the maths that are needed to get the job done. When you reach 18 the next step to better yourself is doing an apprenticeship under an electrician. This helps give you an idea of what you are going to be dealing with as an electrician. Being an apprentice is highly recommended. This usually last 4 years. You will need 144 hours in the class room and 2000 hours on the job The final step is to take a written test on the information you learned throughout training. If the test is passed then you will receive your license or certification. This license is not required in all states. To be an electrician you have to have colored vision to determine the differ color wires and need good agility and dexterity.
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Construction. 4th ed. 2004. New York: Ferguson, 2004. Print. Career in Focus.
through the year 2014 employment of electricians is going to increase fast. AS the population grows we will need more electricians to wire people homes, factories and businesses. Also as time goes on new technologies will come about and we will need them more here. employment varies depending on the economy and so does apprenticeship. During the periods when the economy is bad there are less opportunities to do an apprenticeship and employment of electricians is low. On the other hand when the economy is doing well more jobs and opportunities open up
The amount of money an electricians makes a year depends on their experience. When they are just starting out their pay ranges from 23,000 to 41,000 dollars but as time goes on and they get better at what they doing they can be paid 65,000+.
Construction. 4th ed. 2004. New York: Ferguson, 2004. Print. Career in Focus.
Electricians must perform the standard safety procedures. These include making sure the circuit breaker is off to the device that he or she is working on. Then testing the device to make sure the fuse doesn&#x2019;t blow. And if they are working with high voltage like power lines they should wear lineman electrical gloves and safety harness and hard hats.
Carlos is my grandparents handy man. he does all of their electrical and outside work. When they need something fixed he fixes it. He can into play with my project because he taught me a lot about how electricity works or and gets to a house. He told me about the different wires in an outlet and switch and what each does.
He is my dad and he usually does the electrical work in my house when he can. He also taught me about electricity and how gfi outlets work. He taught me how to replace light switches and outlets