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I am talking about thermal ionization, Is to possible to make any material or is there any element that can be ionized at let say 20 degree centigrade Temperature?

I am a computer engineer and into science that much but it is just curiosity, Please correct me If I am talking nonsense.

EDIT :

As per I know a filament of a bulb produces photons when heat applied. My point is can we make any material that will produce photons at less than a room temperature and use photoelectric effect to capture energy of photon and convert it to electricity.

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Put some common salt into water and you get ions! –  udiboy1209 Aug 24 '13 at 9:48
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My point is that your question isn't really specific. How should the ions exist(Technically even an ionic solid crystal contains ions, so...)? what do you want to use them for? etc. –  udiboy1209 Aug 24 '13 at 9:48
    
@udiboy I am thinking about a cooling system, like if temperature going more than 20 degree the energy will be adsorbed by irons and by some mean we will close circuit and make discharge in earth –  Rupesh Patel Aug 24 '13 at 10:25
    
@udiboy I am thinking about a cooling system, like if temperature going more than 20 degree the energy will be adsorbed by irons and by some mean we will close circuit and make discharge in earth –  Rupesh Patel Aug 24 '13 at 10:26
    
Its a nice idea but questions like yours which talk about an unproven idea or technology are not answered here. So you should delete your question. –  udiboy1209 Aug 24 '13 at 10:34

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