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Physics Definitions

Temporary Magnets : Iron or soft steel will retain magnetism so long as the magnetizing force is applied. Once the magnetizing force is removed, they will lose nearly all their magnetism. Magnets made from such materials are called temporary magnets.
Total Internal Reflection : The phenomenon of reflection of total light when the light traveling in a denser medium strikes the interface separating the denser medium and the rarer medium and the rarer medium at an angle greater than the critical angle is called total internal reflection.
Transistor : When a third doped element is added to a crystal diode in such a way that two pn junction are formed, the resulting device is called transistor.
Transducer : The device that converts one form of energy into another form of energy is called a transducer.
Transmitter : Any electronic system that broadcasts modulated electromagnetic signal toward one or more distant receivers is called transmitter.

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