This document discusses magnetization and demagnetization processes. It defines magnetization as the process by which a material gains magnetic properties, either temporarily or permanently, through methods like stroking with a magnet. Demagnetization removes these magnetic properties, such as through heating above the Curie point. The document then demonstrates magnetization by stroking through an activity with iron filings and a magnet. When stroked with the magnet, the filings become temporarily magnetized by aligning their magnetic domains, but lose this magnetization when shaken without the magnet's influence.
This document is a seminar report on magnetic levitation trains submitted by Anuj Bansal to partial fulfillment of a Bachelor of Technology degree in electrical engineering. The report contains an introduction to magnetic levitation technology, different types of magnetic levitation including permanent magnet, electromagnetic, and electrodynamic types. It discusses the working principles of levitation, propulsion, stability, and guidance of maglev trains and compares maglev trains to conventional aircraft and trains.
This document describes how a DC electric motor works through a student's experiment. The student hypothesized that magnets and electricity interact to spin the motor's axle. An explanation of electric motors generating magnetic fields from electric current in a coil is provided. The student then conducts an experiment using a battery, copper wire loop, magnets, and paper clips to demonstrate how the interaction of magnetic fields causes the wire loop to spin, proving the basic principle of a DC motor.
The document contains an assignment on electrostatics with questions about drawing electric and magnetic fields, calculating forces on charged particles in electric fields, and explaining charge induction. It also includes discussion questions about charged objects and an explanation of how generators work.
This document provides an overview of magnetic particle testing (MPT). It discusses the basic principles of MPT, including how flaws cause magnetic flux leakage which attracts magnetic particles to their location. The document outlines the MPT process, including surface preparation, magnetization, application of particles, viewing, and demagnetization. It also describes different magnetization and particle application methods used in MPT.
The document describes a magnetic levitation system that uses an electromagnet to levitate a small magnet. A Hall effect sensor measures the vertical position of the levitating magnet and a digital signal controller controls the current in the electromagnet coil through pulse-width modulation to maintain the magnet's level of levitation. The system provides feedback to stabilize the levitating material's position and compensate for disturbances through varying the current in the electromagnet coil.
The document describes a magnetic levitation system that uses an electromagnet to levitate a small magnet. A Hall effect sensor measures the vertical position of the levitating magnet and a digital signal controller controls the current in the electromagnet coil through pulse-width modulation to maintain the magnet's level of levitation. The system provides feedback to stabilize the levitating material's position and compensate for disturbances through varying the current in the electromagnet coil.
The document provides an overview of an educational unit on electricity and magnetism. It discusses key topics that will be covered, including different types of electricity (static and electric currents), direct and alternating currents, the relationship between electricity and magnetism, and how they are integral to modern technology. It also describes a "spark" activity that can be used to introduce these topics by demonstrating static electricity and sparking student curiosity.
Magnetism is one aspect of the combined electromagnetic force. It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects. The magnetic phenomenon is known since its inception. The ancient Greeks knew about the magnetic force.
Thales of Miletus is considered to have been the first man to study magnetic forces. According to Lucretius, a Roman philosopher in the first century BC, the term magnet was derived from the province of Magnesia.
This document is a seminar report on magnetic levitation trains submitted by Anuj Bansal to partial fulfillment of a Bachelor of Technology degree in electrical engineering. The report contains an introduction to magnetic levitation technology, different types of magnetic levitation including permanent magnet, electromagnetic, and electrodynamic types. It discusses the working principles of levitation, propulsion, stability, and guidance of maglev trains and compares maglev trains to conventional aircraft and trains.
This document describes how a DC electric motor works through a student's experiment. The student hypothesized that magnets and electricity interact to spin the motor's axle. An explanation of electric motors generating magnetic fields from electric current in a coil is provided. The student then conducts an experiment using a battery, copper wire loop, magnets, and paper clips to demonstrate how the interaction of magnetic fields causes the wire loop to spin, proving the basic principle of a DC motor.
The document contains an assignment on electrostatics with questions about drawing electric and magnetic fields, calculating forces on charged particles in electric fields, and explaining charge induction. It also includes discussion questions about charged objects and an explanation of how generators work.
This document provides an overview of magnetic particle testing (MPT). It discusses the basic principles of MPT, including how flaws cause magnetic flux leakage which attracts magnetic particles to their location. The document outlines the MPT process, including surface preparation, magnetization, application of particles, viewing, and demagnetization. It also describes different magnetization and particle application methods used in MPT.
The document describes a magnetic levitation system that uses an electromagnet to levitate a small magnet. A Hall effect sensor measures the vertical position of the levitating magnet and a digital signal controller controls the current in the electromagnet coil through pulse-width modulation to maintain the magnet's level of levitation. The system provides feedback to stabilize the levitating material's position and compensate for disturbances through varying the current in the electromagnet coil.
The document describes a magnetic levitation system that uses an electromagnet to levitate a small magnet. A Hall effect sensor measures the vertical position of the levitating magnet and a digital signal controller controls the current in the electromagnet coil through pulse-width modulation to maintain the magnet's level of levitation. The system provides feedback to stabilize the levitating material's position and compensate for disturbances through varying the current in the electromagnet coil.
The document provides an overview of an educational unit on electricity and magnetism. It discusses key topics that will be covered, including different types of electricity (static and electric currents), direct and alternating currents, the relationship between electricity and magnetism, and how they are integral to modern technology. It also describes a "spark" activity that can be used to introduce these topics by demonstrating static electricity and sparking student curiosity.
Magnetism is one aspect of the combined electromagnetic force. It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects. The magnetic phenomenon is known since its inception. The ancient Greeks knew about the magnetic force.
Thales of Miletus is considered to have been the first man to study magnetic forces. According to Lucretius, a Roman philosopher in the first century BC, the term magnet was derived from the province of Magnesia.
Searl-Effect Generator Design and Manufacturing Procedure
In this article, the design and manufacturing procedure for a Searl-Effect Generator (SEG) will be described. The SEG is a device that generates electricity using principles of magnetism and rotation. The generator consists of three main parts: the rotor, the stator, and the housing. The rotor is a metal disc that rotates around a stationary stator. The stator is made up of two electromagnets that create a rotating magnetic field. The housing holds everything together and provides a place for the wiring to connect to the generator.
The first step in building the SEG is to create the rotor. The rotor is made from a metal disc that is about 12 inches in diameter. A hole must be drilled in the center of the disc so that it can fit over the axle of the motor.
The document provides the syllabus and question bank for Class XII students for the academic session 2023-24. It is divided into two sections - Section A for bright students and Section B for slow learners. The syllabus covers 14 chapters on topics related to physics such as electricity, magnetism, electromagnetism, optics, modern physics etc. The question bank provides multiple choice questions and assertion-reason type questions for Chapter 1 on Electric Charges and Fields, which is the first chapter in the syllabus.
This document discusses the history and discoveries of electromagnetism. It describes how in 1826, Ampere discovered that electric currents produce magnetic fields. In 1831, Faraday and Henry independently discovered electromagnetic induction, which is the production of voltage across a conductor exposed to a changing magnetic field. Faraday published his findings first and received credit. His discovery of induction led to understanding that moving magnets around a wire produces electricity, and that moving electric charges also produce magnetic fields. This fundamental principle applies to technologies like transformers, motors, generators, and more.
Magnets have north and south poles and are surrounded by magnetic fields, with the strongest forces occurring at the poles; the arrangement of atomic domains determines if a material is magnetic, with aligned domains creating magnetism; and while all magnets attract opposite poles and repel like poles, their magnetic properties can be enhanced, reduced, or changed through external influences on the domains.
This document is a physics project report submitted by a class 12 student. It includes an introduction to electric generators, explanations of the theory and construction of generators, how generators work, their uses and efficiency. It also lists sources consulted in a bibliography section. The student expresses gratitude to their teacher and parents for their support and help in completing the project within the required timeframe.
This document provides an overview of the topics that will be covered in 12 lessons on electric circuits. The lessons will cover static electricity, electric charge, circuit symbols, simple circuits, controlling and measuring current, resistance, resistor combinations, measuring voltage, electrical power, domestic appliances, generating electricity, and distributing electricity. Each lesson will have objectives, activities, extension questions, and a summary.
Magnets have north and south poles and are surrounded by magnetic fields, they exert attractive or repulsive forces on other magnets depending on whether the poles are opposite or alike, and an object is magnetic if the alignment of atomic domains within it create an overall magnetic field.
This document presents several research-inspired problems in electricity and magnetism that are suitable for introductory and intermediate-level courses. It discusses problems related to interactions between electron spins in a layered material, measurements using a SQUID magnetometer, and magnetic fields produced by superconducting magnets. Solutions to the problems are also provided.
• The scanning tunneling Microscope is an electron microscope that transmits three - dimensional images of the electron cloud around the nucleus.
• The scanning tunneling Microscope (STM) works by scanning a very sharp metal wire tip over a surface. By bringing the tip very close to the surface, and by applying an electrical voltage to the tip or sample, we can image the surface at an extremely small scale - down to resolving individual atoms.
1. The document describes an experiment to verify Faraday's law of electromagnetic induction by measuring the induced electromotive force in a coil as it passes through a changing magnetic field.
2. The experiment varies both the velocity of the coil by changing the angle it swings through the magnetic field, and the strength of the magnetic field by adjusting the distance between magnet poles.
3. Data on the induced voltage, magnetic field, and angular velocity of the coil is recorded and analyzed to understand the relationships between these variables as described by Faraday's law.
This document describes how to build an electromagnetic train using copper wire, a battery, and magnets. It operates based on the principles that current through a coil generates a magnetic field and that magnets experience a force at the ends of a coil where the field lines diverge. To make it, magnets are attached to a battery and placed inside a coil made of copper wire, forming a complete circuit. When power is applied, the magnetic field generated causes a force on the magnets that propels the train forward along the coil.
This document provides an overview of electrostatic charging and electric fields. It begins with a brief history of electricity and defines key concepts like electric charge, positive and negative charges, and Coulomb's law governing the interaction between charges. Experiments are described to demonstrate charging by rubbing and induction. An electroscope is introduced as a device to detect electric charges. The document then explains electric fields and flux, defining them in terms of force and geometry. Examples are provided to illustrate calculations of electric force and field intensity. In summary, the document introduces the fundamental concepts and principles of electrostatics.
To make magnetic art, place magnets under paper and sprinkle iron filings on top to see the shape of the magnetic field. Gently spread the filings to fill the space, then draw or photograph the pattern. While electricity did not move the filings in a circuit as predicted, magnets were able to demonstrate magnetic fields by arranging the filings.
To make magnetic art, place magnets under paper and sprinkle iron filings on top to see the shape of the magnetic field. Gently spread the filings to fill the space, then draw or photograph the pattern. While electricity did not move the filings in a circuit as predicted, magnets successfully demonstrated magnetic fields by arranging the filings. The experiment showed magnetic fields can be visualized and different magnet shapes could produce varying patterns.
1) Magnets have two poles, a north pole and a south pole. Like poles repel and unlike poles attract. Magnetic poles always occur in pairs and cannot be separated.
2) Ferromagnetic materials contain small magnetic regions called domains that act like magnets. In an external magnetic field, the domains align to strongly magnetize the material. Above the Curie temperature, ferromagnets lose their magnetism.
3) Electromagnets use electric currents to generate magnetic fields and act similarly to permanent magnets. They are widely used in applications requiring strong, controllable magnetic fields.
Magnets have north and south poles and attract magnetic materials like iron. A magnet can induce magnetism in other magnetic materials through magnetic induction. The magnetic domains within materials align to create their magnetic properties, and heating, hammering, or alternating currents can demagnetize materials by disrupting this alignment. Magnets can be made by stroking an object with a magnet or by running a direct current through a solenoid wrapped around the object.
General science unit 3 electricity and magnetismJamesEArnoldJr
This document summarizes a general science unit on electricity and magnetism. It covers topics including the properties of magnets, how magnetic poles interact, magnetic fields, electromagnets, generators, motors, and transformers. Key points are that electric currents create magnetic fields, and magnetic fields can induce electric currents. Motors convert electrical energy to mechanical motion using these principles, while generators operate in reverse to produce electricity from mechanical inputs. Transformers are used to increase or decrease voltage in electrical systems. Students will have a chapter test on these concepts on Wednesday.
Searl-Effect Generator Design and Manufacturing Procedure
In this article, the design and manufacturing procedure for a Searl-Effect Generator (SEG) will be described. The SEG is a device that generates electricity using principles of magnetism and rotation. The generator consists of three main parts: the rotor, the stator, and the housing. The rotor is a metal disc that rotates around a stationary stator. The stator is made up of two electromagnets that create a rotating magnetic field. The housing holds everything together and provides a place for the wiring to connect to the generator.
The first step in building the SEG is to create the rotor. The rotor is made from a metal disc that is about 12 inches in diameter. A hole must be drilled in the center of the disc so that it can fit over the axle of the motor.
The document provides the syllabus and question bank for Class XII students for the academic session 2023-24. It is divided into two sections - Section A for bright students and Section B for slow learners. The syllabus covers 14 chapters on topics related to physics such as electricity, magnetism, electromagnetism, optics, modern physics etc. The question bank provides multiple choice questions and assertion-reason type questions for Chapter 1 on Electric Charges and Fields, which is the first chapter in the syllabus.
This document discusses the history and discoveries of electromagnetism. It describes how in 1826, Ampere discovered that electric currents produce magnetic fields. In 1831, Faraday and Henry independently discovered electromagnetic induction, which is the production of voltage across a conductor exposed to a changing magnetic field. Faraday published his findings first and received credit. His discovery of induction led to understanding that moving magnets around a wire produces electricity, and that moving electric charges also produce magnetic fields. This fundamental principle applies to technologies like transformers, motors, generators, and more.
Magnets have north and south poles and are surrounded by magnetic fields, with the strongest forces occurring at the poles; the arrangement of atomic domains determines if a material is magnetic, with aligned domains creating magnetism; and while all magnets attract opposite poles and repel like poles, their magnetic properties can be enhanced, reduced, or changed through external influences on the domains.
This document is a physics project report submitted by a class 12 student. It includes an introduction to electric generators, explanations of the theory and construction of generators, how generators work, their uses and efficiency. It also lists sources consulted in a bibliography section. The student expresses gratitude to their teacher and parents for their support and help in completing the project within the required timeframe.
This document provides an overview of the topics that will be covered in 12 lessons on electric circuits. The lessons will cover static electricity, electric charge, circuit symbols, simple circuits, controlling and measuring current, resistance, resistor combinations, measuring voltage, electrical power, domestic appliances, generating electricity, and distributing electricity. Each lesson will have objectives, activities, extension questions, and a summary.
Magnets have north and south poles and are surrounded by magnetic fields, they exert attractive or repulsive forces on other magnets depending on whether the poles are opposite or alike, and an object is magnetic if the alignment of atomic domains within it create an overall magnetic field.
This document presents several research-inspired problems in electricity and magnetism that are suitable for introductory and intermediate-level courses. It discusses problems related to interactions between electron spins in a layered material, measurements using a SQUID magnetometer, and magnetic fields produced by superconducting magnets. Solutions to the problems are also provided.
• The scanning tunneling Microscope is an electron microscope that transmits three - dimensional images of the electron cloud around the nucleus.
• The scanning tunneling Microscope (STM) works by scanning a very sharp metal wire tip over a surface. By bringing the tip very close to the surface, and by applying an electrical voltage to the tip or sample, we can image the surface at an extremely small scale - down to resolving individual atoms.
1. The document describes an experiment to verify Faraday's law of electromagnetic induction by measuring the induced electromotive force in a coil as it passes through a changing magnetic field.
2. The experiment varies both the velocity of the coil by changing the angle it swings through the magnetic field, and the strength of the magnetic field by adjusting the distance between magnet poles.
3. Data on the induced voltage, magnetic field, and angular velocity of the coil is recorded and analyzed to understand the relationships between these variables as described by Faraday's law.
This document describes how to build an electromagnetic train using copper wire, a battery, and magnets. It operates based on the principles that current through a coil generates a magnetic field and that magnets experience a force at the ends of a coil where the field lines diverge. To make it, magnets are attached to a battery and placed inside a coil made of copper wire, forming a complete circuit. When power is applied, the magnetic field generated causes a force on the magnets that propels the train forward along the coil.
This document provides an overview of electrostatic charging and electric fields. It begins with a brief history of electricity and defines key concepts like electric charge, positive and negative charges, and Coulomb's law governing the interaction between charges. Experiments are described to demonstrate charging by rubbing and induction. An electroscope is introduced as a device to detect electric charges. The document then explains electric fields and flux, defining them in terms of force and geometry. Examples are provided to illustrate calculations of electric force and field intensity. In summary, the document introduces the fundamental concepts and principles of electrostatics.
To make magnetic art, place magnets under paper and sprinkle iron filings on top to see the shape of the magnetic field. Gently spread the filings to fill the space, then draw or photograph the pattern. While electricity did not move the filings in a circuit as predicted, magnets were able to demonstrate magnetic fields by arranging the filings.
To make magnetic art, place magnets under paper and sprinkle iron filings on top to see the shape of the magnetic field. Gently spread the filings to fill the space, then draw or photograph the pattern. While electricity did not move the filings in a circuit as predicted, magnets successfully demonstrated magnetic fields by arranging the filings. The experiment showed magnetic fields can be visualized and different magnet shapes could produce varying patterns.
1) Magnets have two poles, a north pole and a south pole. Like poles repel and unlike poles attract. Magnetic poles always occur in pairs and cannot be separated.
2) Ferromagnetic materials contain small magnetic regions called domains that act like magnets. In an external magnetic field, the domains align to strongly magnetize the material. Above the Curie temperature, ferromagnets lose their magnetism.
3) Electromagnets use electric currents to generate magnetic fields and act similarly to permanent magnets. They are widely used in applications requiring strong, controllable magnetic fields.
Magnets have north and south poles and attract magnetic materials like iron. A magnet can induce magnetism in other magnetic materials through magnetic induction. The magnetic domains within materials align to create their magnetic properties, and heating, hammering, or alternating currents can demagnetize materials by disrupting this alignment. Magnets can be made by stroking an object with a magnet or by running a direct current through a solenoid wrapped around the object.
General science unit 3 electricity and magnetismJamesEArnoldJr
This document summarizes a general science unit on electricity and magnetism. It covers topics including the properties of magnets, how magnetic poles interact, magnetic fields, electromagnets, generators, motors, and transformers. Key points are that electric currents create magnetic fields, and magnetic fields can induce electric currents. Motors convert electrical energy to mechanical motion using these principles, while generators operate in reverse to produce electricity from mechanical inputs. Transformers are used to increase or decrease voltage in electrical systems. Students will have a chapter test on these concepts on Wednesday.
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
How to Setup Warehouse & Location in Odoo 17 InventoryCeline George
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPRAHUL
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
5. Magnetization of materials varies to
the kind of materials a permanent magnet
or current is in contact with. There are
objects that we called magnetizable or
non-magnetizable. Magnetizable objects
are objects that can possess magnetic
abilities.
6. This happen when they adapt the
ability of a magnet to magnetize other
objects. The positive and negative
polarities of the objects realign due to
excitation of the charges that follows
the magnetic field of a magnetizable
material.
7. On the other hand non-
magnetizable objects are those
objects that does not possess the
ability to magnetize other objects.
Common example of magnetizable
objects are metals and metalloids.
While plastic and other liquid
elements are non-magnetizable
objects.
8. The process by which a
magnetic substance attains
magnetism or exhibit magnetic
properties either temporarily or
permanently is what we called
magnetization.
9. On the other hand, the process
of removing or eradicating the
magnetic property of a magnet is
what we called demagnetization.
There are ways to magnetize or
demagnetize a permanent magnets.
10. For an object to attain magnetization,
the following procedures or methods are
done. These processes are:
• Single Touch Method
• Double Touch Method
• Electrical Method
11. Single Touch Method
Single touch method is done
by rubbing a magnet along a
magnetic substance from one
end to another and lifting the
magnet vertically upwards
when it reaches the end,
rubbing both upper and lower
surface.
12. Double Touch Method
It is a process wherein two magnets are
placed with each other at the center of
the magnetic material and rubbed in
opposite direction.
14. There are also ways to demagnetize or to
remove the magnetic property of a magnetic
material. To destroy or to lose totally or partially
the magnetism of a magnet, the following are
some ways to do it:
15. Rough Handling
It is handling the magnetic
materials carelessly like hammering
or dropping the magnet
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17. Induction
Placing magnet side by
side with similar poles
together induces polarity
with each other, causing
demagnetization. To avoid
self demagnetization,
magnets are placed side
by side with their opposite
poles.
https://www.google.com.ph/search?q=proper+storing+of+magnets&tbm=isch&ved=2ahUKEwjDyLXt3P_
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cCegQIABAA&oq=proper+storing+of+magnets&gs_lcp=CgNpbWcQDDIECCMQJ1CY0QFYyNkBYPTtAWgAc
AB4AIABeIgBvQOSAQMwLjSYAQCgAQGqAQtnd3Mtd2l6LWltZw&sclient=img&ei=ykPlXsO7MZqO0QTWi4
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18. Passing Electricity
Magnets loses its
magnetization as current
changes direction
continuously. This
change in the direction of
the current disturbs the
alignment of molecular
magnets resulting to
demagnetization.
https://www.google.com.ph/search?q=demagnetisation+by+heating&tbm=isch&ved=2ahUKEwil5JG43__p
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cCegQIABAA&oq=demagnetisation&gs_lcp=CgNpbWcQARgEMgQIABBDMgIIADICCAAyAggAMgIIADIGCAAQ
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GB#imgrc=lmEZ96DRZE9KCM&imgdii=jbED53teOo3OhM
20. Let us conduct a simple experiment. In this
experiment we will need:
Magnet Iron filings in
a bottle
Compass
21. Procedure:
1.Put iron filings in a sheet of paper and
check whether the iron filings are
magnetized or not. To unmagnetized the
filings, stir or move the iron filings gently
on the paper and check it again until it
unmagnetized.
22. 2.When the iron filings are ready, placed it
on a test tube or a small bottle. Fill the
quarter portion of the bottle and cover it
using a tape or cork to secure the iron
filings from spilling out.
23. 3. Hold the test tube horizontally. Shake or
roll the test tube or bottle gently with your
fingers to level out the iron filings inside.
24. 4. Then when levelled, touch the bottle or
test tube with the north pole end of the
permanent magnet the test tube’s end as
shown in a video clip on the next slide.
25. Move the magnet along
the test tube from this end
to the covered end. Lift
the magnet off the test
tube and repeat with ten
or more strokes. Observe
and record what happens
inside the test tube.
26. 5. Gently lay the test
tube on a table and
bring compasses near
both ends of the test
tube as shown below.
Observe and record
what happens.
27. 6. Carefully shake the test
tube as shown below
without moving the
compasses. Place the test
tube once again in line with
the compass and check the
magnetism of the filings.
Record your observation
28. In the video we observe the behavior
of the iron filings in the bottle when a
magnet is placed and stroked under it.
Magnetization by stroking can only be
possible if the object being stroked
possess magnetic properties.
29. In our video the iron filings become
a temporary magnet. Each molecules
realigned its positive and negative
polarities when it was under the
influence of the magnetic field of the
magnet. As long as it is being
influenced by the magnetic field, it will
exhibit the properties of being a
magnet.
30. But when put away the magnet and
shake the bottle that contains the
magnetized iron filings, it will return to
its normal state. That is because there
are no magnetic field that excites the
positive and negative polarities of the
iron filings so these charge will be
suspended inside the bottle.
31. THANK YOU AND
GOD BLESS!
Prepared by:
RICHMOND DV. BATAZAR
LPT, SCIENCE 1O