Why are insulators bad conductors of heat. Give reasons?
Answers
It all depends on your application. Some insulators such as ceramic ferrite (magnets) have a non-linear resistance, in that the higher the voltage the lower the resistance. I have brought the material to incandescence in resonant circuits by passing current through it. Here I am using a ceramic magnet as ballasting for a 4 inch neon discharge, where it actually has 8 times less impedance then the discharge itself. Unfortunately or fortunately, depending how you look at it, there is a camera “wagon wheel” effect taking place where the camera begins taking pictures during the AC zero voltage crossing point resulting in a shifting back and forth from off to on when filming the neon discharge.
Answer:
That's because air, like other gases, is a poor conductor of thermal energy. ... Therefore, particles of gases have fewer opportunities to transfer thermal energy.
Explanation:
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