answersLogoWhite

0


Best Answer

Heat & temperature is a property of matter... and not matter.

Photons are unique as they are essentially a packet of energy, but without mass. And, not having mass, they are not considered matter. (Note: it used to be common to refer to the relativistic mass-equivalent of an object's kinetic energy as it's "mass", and disinguish it's invariant mass as rest mass. That terminology was still current when I studied relativity, and there are certainly still books on the shelves that use it. Light and heat do have mass in that sense. But that terminology was confusing, and nowadays it is fashionable among physicists to refer to the old "relativistic mass" as "energy" and to the old "rest mass" as "mass". Light and heat have zero rest mass.)

Essentially, "matter" is the stuff that material objects are made of. Heat is merely the random motion of the parts, and light is not among the parts of material stuff either.

Note- when broken down enough matter is comprised of particles similiar to photons(no Mass, specific function, kinda in between energy and matter) it would not truly be a stretch to consider matter as some form of energy.

User Avatar

Wiki User

10y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why are light and heat not matter?
Write your answer...
Submit
Still have questions?
magnify glass
imp