magneticmaterials-200517145355.pdf
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This document discusses different types of magnetic and non-magnetic materials. It defines magnetic materials as those attracted by magnetic fields, such as iron, nickel, and cobalt, while non-magnetic materials are not, like wood, rubber, and plastics. Magnetic materials are further divided into soft magnetic materials, which do not retain magnetism without a magnetic field, and hard magnetic materials, which do retain magnetism without a field. The document also discusses magnetic fields, magnetic induction, magnetic moments, and different types of magnetism including diamagnetic, paramagnetic, and ferromagnetic.
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The earth's magnetic field is generated by electric currents in the liquid outer core. These currents are caused by convection currents in the Earth's molten, electrically conducting core. The location of the north and south magnetic poles are not aligned with the geographic poles and shift over time. The magnetic field strength and direction also varies over long time periods.
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This document discusses the basic concepts of magnetism and magnetic materials. It defines magnetic materials as those containing atoms ordered such that they exhibit magnetic properties like attracting iron. It explains that magnetism arises from magnetic dipoles within materials that behave like small bar magnets. The document outlines several key concepts: magnetic field vectors describe magnetic forces; magnetic moments originate from electron orbitals and spin; and different types of magnetism result from how electron dipoles respond to external fields. Understanding these fundamental concepts is important for studying magnetic materials.
SOME BASIC PRINCIPLES OF MAGNETISM (Autosaved).docx
Electric Current and Magnetism
The Nature of Magnetism: Electricity’s Silent Partner
Magnetism is a property of a material that enables to attract or repel other materials. The presence and strength of the material’s magnetic properties can be observed by the effect of the forces of attraction and repulsion on other materials.
What makes magnets?
Magnets are actually created by tiny spinning electrons in an atom. The electrons move about the nucleus and spin like a top, creating a tiny magnetic field.
If electrons are spinning in the same direction there is more magnetism, while electrons spinning in opposite directions cancel out each others’ magnetic fields. Magnetic fields are invisible, we can only see the effects of the magnetic force.
Magnetic Field: The space around a magnet in which a magnetic force is exerted
— The shape of a magnetic field is revealed by magnetic field lines
Directed away from north poles and toward south poles
Magnets have two ends or poles, called north and south poles. At the poles of a magnet, the magnetic field lines are closer together.
The magnetic field lines around horse-shoe and disk magnets are closest together at the magnets’ poles. Unlike poles of magnets attract each other and like poles of magnets repel. Magnetic Poles: A region on a magnet which produces magnetic forces
The poles of a suspended magnet will align themselves to the poles of the Earth
Fundamental Rule: Like poles repel; opposite poles attract
If a force of attraction only is possible between an object and a magnet, then the object interacting with the magnet contains a ferromagnetic substance and is considered naturally magnetic.
If a force of repulsion is only between an object and a magnet, then the object interacting with the magnet may also be a permanent magnet or a temporarily magnetized ferromagnetic material.
Materials which are attracted by a magnet are known as magnetic materials. Iron, cobalt, nickel and many alloys of these metals like steel and alnico are magnetic.
Magnetic materials can be used to make permanent or temporary magnets unlike the non-magnetic materials which cannot.
INDUCED MAGNETISM
The process by which the screws become magnets is called Electric/Magnetic Induction. This same process is the reason why magnets attract non-magnetized magnetic substances such as the screw. The screw becomes an induced magnet with the end nearer the magnet having an opposite polarity to that of the permanent magnet. Hence attraction happens after magnetic induction occurs. The quicker way to know the polarity of a permanent or induced magnet is by the use of a magnetic compass. Compass needle is a small magnet that is free to pivot in a horizontal plane about an axis and that the end of the magnet that points to geographic north is called the north (N) pole. Likewise, the opposite end of the magnet is the south (S) pole.What are magnetic domains?
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pp05-1.ppt
The earth's magnetic field is generated by electric currents in the liquid outer core. These currents are caused by convection currents in the Earth's molten, electrically conducting core. The location of the north and south magnetic poles are not aligned with the geographic poles and shift over time. The magnetic field strength and direction also varies over long time periods.
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This document discusses the basic concepts of magnetism and magnetic materials. It defines magnetic materials as those containing atoms ordered such that they exhibit magnetic properties like attracting iron. It explains that magnetism arises from magnetic dipoles within materials that behave like small bar magnets. The document outlines several key concepts: magnetic field vectors describe magnetic forces; magnetic moments originate from electron orbitals and spin; and different types of magnetism result from how electron dipoles respond to external fields. Understanding these fundamental concepts is important for studying magnetic materials.
SOME BASIC PRINCIPLES OF MAGNETISM (Autosaved).docx
Electric Current and Magnetism
The Nature of Magnetism: Electricity’s Silent Partner
Magnetism is a property of a material that enables to attract or repel other materials. The presence and strength of the material’s magnetic properties can be observed by the effect of the forces of attraction and repulsion on other materials.
What makes magnets?
Magnets are actually created by tiny spinning electrons in an atom. The electrons move about the nucleus and spin like a top, creating a tiny magnetic field.
If electrons are spinning in the same direction there is more magnetism, while electrons spinning in opposite directions cancel out each others’ magnetic fields. Magnetic fields are invisible, we can only see the effects of the magnetic force.
Magnetic Field: The space around a magnet in which a magnetic force is exerted
— The shape of a magnetic field is revealed by magnetic field lines
Directed away from north poles and toward south poles
Magnets have two ends or poles, called north and south poles. At the poles of a magnet, the magnetic field lines are closer together.
The magnetic field lines around horse-shoe and disk magnets are closest together at the magnets’ poles. Unlike poles of magnets attract each other and like poles of magnets repel. Magnetic Poles: A region on a magnet which produces magnetic forces
The poles of a suspended magnet will align themselves to the poles of the Earth
Fundamental Rule: Like poles repel; opposite poles attract
If a force of attraction only is possible between an object and a magnet, then the object interacting with the magnet contains a ferromagnetic substance and is considered naturally magnetic.
If a force of repulsion is only between an object and a magnet, then the object interacting with the magnet may also be a permanent magnet or a temporarily magnetized ferromagnetic material.
Materials which are attracted by a magnet are known as magnetic materials. Iron, cobalt, nickel and many alloys of these metals like steel and alnico are magnetic.
Magnetic materials can be used to make permanent or temporary magnets unlike the non-magnetic materials which cannot.
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The process by which the screws become magnets is called Electric/Magnetic Induction. This same process is the reason why magnets attract non-magnetized magnetic substances such as the screw. The screw becomes an induced magnet with the end nearer the magnet having an opposite polarity to that of the permanent magnet. Hence attraction happens after magnetic induction occurs. The quicker way to know the polarity of a permanent or induced magnet is by the use of a magnetic compass. Compass needle is a small magnet that is free to pivot in a horizontal plane about an axis and that the end of the magnet that points to geographic north is called the north (N) pole. Likewise, the opposite end of the magnet is the south (S) pole.What are magnetic domains?
Magnetic substances like iron, cobalt and nickel
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Magnetism is a force that can attract or repel magnetic materials like iron. It is a property of substances that are attracted to magnets. There are different types of magnetism including permanent magnetism, temporary magnetism caused by magnetic fields, and electromagnetism related to electric currents and changing magnetic fields. Magnets have north and south poles and attract unlike poles while repelling like poles. The strength of magnetic force depends on the strength of the magnets and the distance between them.
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The Earth has a magnetic field generated by circulating ions in its liquid iron core. The field emerges from the geographic North Pole and re-enters at the South Pole, and its strength varies by location. The magnetic declination is the angle between magnetic and geographic axes, while magnetic inclination is the angle the field makes with the horizontal. Materials can be classified as diamagnetic, paramagnetic, or ferromagnetic based on how their atoms respond to magnetic fields. Ferromagnetic materials like iron contain magnetic domains that align when magnetized. The hysteresis curve shows the relationship between magnetic field strength and flux density, exhibiting properties like retentivity and coercivity that differ between soft iron and steel.
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CalArts毕业证学历书【微信95270640】CalArts毕业证’圣力嘉学院毕业证《Q微信95270640》办理CalArts毕业证√文凭学历制作{CalArts文凭}购买学历学位证书本科硕士,CalArts毕业证学历学位证【实体公司】办毕业证、成绩单、学历认证、学位证、文凭认证、办留信网认证、（网上可查，实体公司，专业可靠）
(诚招代理)办理国外高校毕业证成绩单文凭学位证,真实使馆公证（留学回国人员证明）真实留信网认证国外学历学位认证雅思代考国外学校代申请名校保录开请假条改GPA改成绩ID卡
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AI assisted telemedicine KIOSK for Rural India.pptx
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Advanced control scheme of doubly fed induction generator for wind turbine us...
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
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The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
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Data Driven Maintenance | UReason Webinar
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
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Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
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The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
Software Engineering and Project Management - Introduction, Modeling Concepts...
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- 4. Magnetic Materials: These materials are attracted by magnetic field. Iron, nickel and cobalt objects such as iron nail, key, metal spade, needle and metal door handle are magnetic in nature. Non-Magnetic Materials: These materials are not attracted towards magnet. For example; wood, rubber, plastics, coins, leather and feather are non-magnetic in nature. Materials which are capable to being magnet in magnetic field are called as magnetic materials. Metals like iron, nickel, cobalt and their compounds and alloys are magnetic in nature. Magnetic materials can be classified in two types. Soft magnetic materials: These materials do not have permanent magnetism and lose their magnetism quickly in the absence of magnetic field. They form temporary magnets and also known as electromagnet. The best examples of soft magnet are iron-silicon alloys, nickel-iron alloy and iron. Hard magnetic materials: These magnetic materials retain their magnetism in absence of magnetic field and also known as permanent magnets. Alloys composed of iron, cobalt and aluminum are generally acted as hard magnetic materials.
- 5. Magnetic field Magnetic field is a force which is generated due to energy change in a volume of space A magnetic field is produced by an electrical charge in motion e.g. current flowing in a conductor, orbital movement and spin of electrons Magnetic lines of force Current Magnetic lines of force
- 7. Magnetic Induction B & Magnetic Field H Question: What is the relationship between B and H? Answer: When a magnetic field has been generated in a medium by a current in accordance with Ampere’s law, the medium will respond with a magnetic induction B ( “magnetic flux density”) The magnetic “flux density” is given in webers/m2 = B 1 weber per square meter = 1 Tesla
- 9. Magnetic moments Being a moving charge, electrons produce a small magnetic field having a magnetic moment along the axis of rotation. The spin of electrons also produces a magnetic moment along the spin axis. Magnetism in a material arises due to alignment of magnetic moments.
- 10. Types of Magnetisms Depending on the existence and alignment of magnetic moments with or without application of magnetic field, three types of magnetism can be defined. Diamagnetic Paramagnetic Ferromagnetic Antiferromagnetic
- 13. Paramagnetic
- 20. Schematic representation of magnetism types