Electric fan
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The document discusses the electric fan, which was invented in 1832 and changed lives by keeping people cool on hot days using air circulation from the fan.
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العرض الأخير
The document investigates the efficiency of a solar cooker box with four reflectors. It describes how solar cookers work by converting sunlight to thermal energy. The advantages are listed as reduced travel for firewood, lower costs than other fuels, and reduced emissions. Limitations include long cooking times, reliance on sunny weather, and inconsistent results. Dimensions and materials used to construct the solar oven are provided. Testing showed efficiency increased with smaller differences between collector and ambient temperatures. Recommendations include adding wheels and improving the window seal to boost performance.
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1) Wind power harnesses the kinetic energy of wind to turn turbine blades, which spins a shaft connected to a generator to produce electricity.
2) Wind power has advantages of being renewable, producing no pollution, and having low operating costs once turbines are established.
3) However, wind power also has disadvantages such as the need for steady wind, high initial costs, and potential objections to turbines on aesthetic or noise grounds.
4) Whether wind power would be suitable for Pontiac would depend on local wind conditions and costs/benefits compared to other energy options.
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The document discusses several ways to optimize energy usage and conserve energy through automatic control systems using sensors. It describes projects using IR sensors to automatically turn lights and fans on/off based on occupancy. Another project uses an LDR sensor to turn street lights off during the day. A third project uses an MQ-135 gas sensor and Arduino to automatically turn an exhaust fan on when detecting smoke in the kitchen. The document promotes conserving energy through automatic control systems using various sensors.
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The document discusses ways for individuals to help reduce pollution and save energy at home. It provides 6 key ways: 1) practicing recycling by reusing materials like plastic bags, batteries, paper, etc., 2) using renewable energy sources which can reduce a household's pollution equivalent to planting 400 trees, 3) using compact fluorescent light bulbs which last longer and save energy, 4) turning off devices when not in use to conserve energy, 5) donating unused items that are still usable to others who need them or associations to protect the environment and support good causes, and 6) paying attention to water usage like turning it off while brushing teeth to contribute to environmental protection.
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This document contains information about different forms of energy:
- Sound is a vibration that can travel through gases, liquids, and solids as vibrating objects transmit vibrations through the air, with larger vibrations creating louder sounds.
- Chemical energy is released during chemical reactions like combustion in engines and can be transformed into kinetic energy.
- Kinetic energy is the energy of moving objects related to their mass and speed.
- Electrical, thermal, solar, wind, water, biomass, geothermal, and nuclear energies are described as renewable or non-renewable sources to generate electricity which can then power machines.
- Conductors, insulators, static electricity, and currents are defined in relation to electricity
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2) To set fan speed, the resistance in the circuit must be adjusted using a selector switch and terminal block. Higher resistance yields slower speed while lower resistance results in faster speed.
3) Troubleshooting fan speed involves using a multimeter to test the resistance values in the circuit and ensuring they match the desired settings for slow, medium, or fast speed.
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This document summarizes a market study of the fan industry in Mumbai, India. It finds that ceiling fans have the largest market share. There are over 28 unbranded and 9 branded fan companies. Orient and Bajaj are the leading branded players. Decorative and high speed ceiling fans have the highest sales. For unbranded fans, Metro and Omega have the largest market share. The study recommends Kenstar focus on decorative, high speed, and energy saver ceiling fans and target upper middle class customers with an emphasis on quality over price.
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1. INTRODUCTION ................................................................................ 1
2. TYPE OF FANSAND BLOWERS..................................................... 6
3. ASSESSMENT OF FANS AND BLOWERS ................................... 10
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This document discusses how to conserve energy through reducing consumption. It explains that energy can be converted between forms but not created or destroyed. Renewable energy sources like solar and wind can be replenished, unlike non-renewable fossil fuels which are limited. Conserving energy helps preserve resources for future use and saves money. Simple steps like turning off lights and electronics when not in use can help reduce energy waste at home, school, and in public places. Collective conservation efforts can help ensure a sustainable supply of energy for future generations.
Energy conservation ppt
This presentation discusses energy conservation. It defines energy as the ability to do work and outlines different types of energy sources, distinguishing between renewable sources like solar and wind, and non-renewable fossil fuels. The presentation urges conservation efforts, noting that demands are increasing while resources are limited. It suggests individual actions like using efficient light bulbs and unplugging unused devices to save energy and money. India relies heavily on fossil fuel imports, so increased conservation could help address future energy demands and reliance on foreign sources.
State of the Word 2011
The document discusses the benefits of exercise for both physical and mental health. It notes that regular exercise can reduce the risk of diseases like heart disease and diabetes, improve mood, and reduce feelings of stress and anxiety. The document recommends that adults get at least 150 minutes of moderate exercise or 75 minutes of vigorous exercise per week to gain these benefits.
2015 Upload Campaigns Calendar - SlideShare
Each month, join us as we highlight and discuss hot topics ranging from the future of higher education to wearable technology, best productivity hacks and secrets to hiring top talent. Upload your SlideShares, and share your expertise with the world!
What to Upload to SlideShare
Not sure what to share on SlideShare?
SlideShares that inform, inspire and educate attract the most views. Beyond that, ideas for what you can upload are limitless. We’ve selected a few popular examples to get your creative juices flowing.
Getting Started With SlideShare
SlideShare is a global platform for sharing presentations, infographics, videos and documents. It has over 18 million pieces of professional content uploaded by experts like Eric Schmidt and Guy Kawasaki. The document provides tips for setting up an account on SlideShare, uploading content, optimizing it for searchability, and sharing it on social media to build an audience and reputation as a subject matter expert.
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John Logie Baird, a Scottish inventor, was born in 1888 and died in 1946 in England. He helped develop some of the earliest technologies for television. The first televisions were black and white, heavier, and larger than modern TVs. Television evolved from early mechanical technologies in the late 1800s to transmit visual images electrically to the development of optical, mechanical, and electronic systems to capture, transmit and display video images.
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Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming, who found that it acted as an antibiotic by destroying the cell walls of bacteria. While penicillin does not cure illnesses, it stops bacterial infections, allowing people to live longer lives - for over 100 years in some cases - by treating conditions that were previously fatal due to the lack of effective antibiotics before the discovery and widespread use of penicillin.
Telephone
Alexander Graham Bell invented the telephone in 1876. Bell was a Scottish-born scientist, inventor, engineer and innovator born in 1847. The telephone allowed people to talk to others in different locations without leaving their homes or offices. It revolutionized communication and changed lives by connecting people across distances. The first telephones were difficult to use, made of wood, and lacked features like cameras. Modern cellphones are much easier to operate, constructed of materials like metal and plastic, and incorporate cameras and other advanced technologies.
radio
Nikola Tesla, a Serbian-American inventor and engineer born in 1856, is considered the father of modern technology and invented the radio in 1893, allowing people to listen to music and information broadcasts which expanded knowledge from earlier times when radios did not exist. The modern radio is preferred over older models because it provides more functions like listening to music, news, alarms, time, weather and MP3s.
The car
The document discusses the history and evolution of cars from their early beginnings to modern times. It describes the first car as having three wheels and being made of wood with only one seat and no roof. It then discusses key figures like Nicholas Joseph Cugno who created the first steam car in 1769 and Karl Benz who created the first gasoline car in 1886. The document also notes that the first ride in a car was done by Bertha Benz in 1888 and outlines differences between early cars and modern cars with features like roofs, windows, and air conditioning.
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Thomas Edison created the light bulb on October 22, 1878. The light bulb works by heating a thin filament with an electric current until it glows, producing light. While the first light bulb was simpler and less practical than modern light bulbs, it significantly improved people's lives by providing artificial light after dark, allowing activities like cooking, reading, and homework to be done inside the home.
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Lewis Waterman patented the first practical fountain pen in 1884 in New York. Waterman was born in 1836 in Decatur, Illinois and was a famous American inventor. The document discusses the differences between pens that use cartridges and dip pens that must be refilled with ink. It notes that before the fountain pen was invented, people wrote with dip pens. The ballpoint pen was later invented in 1938 by Ladiaslao Biro in Hungary with help from his partner Mayne, and they later moved to Argentina, with their combined surnames forming the name "birome".
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- 1. Electric Fan Creator: Omar-Rajeen Jumala When?: in 1832. The Fan change our life because when the day is hot can get could with the Fan.