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An electromagnet works by using electricity to create a magnetic field. When an electric current flows through a coil of wire, it generates a magnetic field around the coil. This magnetic field can attract or repel other magnetic materials.

Practical applications of electromagnets include use in electric motors, generators, MRI machines, speakers, and magnetic levitation trains. They are also used in industrial settings for lifting and moving heavy objects, in scrap yards for sorting metals, and in magnetic separators for separating materials.

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How does a Tesla electromagnet work and what are its applications in modern technology?

A Tesla electromagnet works by passing an electric current through a coil of wire to create a magnetic field. This magnetic field can be used in various applications in modern technology, such as in electric motors, MRI machines, and particle accelerators.


How does a DC electromagnet work and what are its applications?

A DC electromagnet works by passing an electric current through a coil of wire, creating a magnetic field. This magnetic field can attract or repel objects made of magnetic materials. Applications of DC electromagnets include use in electric motors, generators, relays, MRI machines, and speakers. They are also used in industrial applications such as lifting and moving heavy objects using magnetic cranes.


Why wouldn't alnico be a good choice for a core of a electromagnet?

Alnico is not a good choice for the core of an electromagnet because it can't be easily magnetized and demagnetized repeatedly. These properties make it less suitable for applications where changing the magnetic field strength is required frequently. Additionally, alnico is brittle and can easily break under stress, making it less durable for electromagnet applications.


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How does holography technology work and what are its practical applications in modern society?

Holography technology works by capturing and reconstructing light waves to create a three-dimensional image. In modern society, holography is used in various practical applications such as security features on credit cards, medical imaging, artistic displays, and virtual reality experiences.

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Why did greek science emphasize theory over practical applications?

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