What is Jinn?

What is Jinn actually? The answer is very clear and simple given in the Holy book of Muslims "Al Quran". It says that God created Jinn with blaze of fire. But now question arise that why can't we see Jinn? To get the answer first we will have to know that what is Fire?

What is Fire?

Fire is nothing but energy of waves of certain frequency. The frequency of waves in fire starts somewhere from infra-red and goes little beyond blue light. We can see just between Red and Violet. Infra Red waves are also the part of Fire waves but we can't see them. And these are the waves, the Jinn are made of which and we can't see them until we have some infra red cameras.