Wednesday, October 3, 2012

Significance of mica in our daily life

                                  Significance of mica in our daily life

Mica is a naturally occuring compound. Mica is called ಕಾಗೆ  ಬಂಗಾರ  or ಅಭ್ರಕ  in Kannada. It is a very brittle  substance that if we just hold it little tight, it will break into pieces. Mica is having glowing characteristics. But it is non  toxic.
In our daily life, we use mica frequently. When we do ironing to our clothes, the bottom surface of the instrument is coated with mica.
Iron box is having coils inside it. These coils will get heated up when we pass electricity through it. But we needed a substance which can conduct heat through it but not electricity.
Just think of other metal coating for the bottom surface. We know that metals are good conductors of heat but they will also pass electricity through them.
We needed a substance which can only conduct heat through it and not electricity. Mica is that required substance. It is a good conductor of heat but it will not pass electricity through it.
If there is any other metal instead of mica , we dare not to touch iron box as we get free dose of current shock too !

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