Question
Fri May 27, 2011 By:
 

Are things like- Light, Heat, Sound and Electricity also MATTER? If Yes then what State are they in?

Expert Reply
Mon May 30, 2011
Objects that take up space and have mass are called matter. Everything around us is made up of matter. So, yes air is matter and its state is gas.
Heat, sound and electricity are not matter.Though light contains electromagnetic rays which also contain photons etc, but since these particles doesnt have any rest mass, light is also not matter. But there is no clear answer for this still.
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