Microwaves excite molecules to heat mater, Is it possible to cause the reverse effect causing cooling?

Answer 1

In effect the reverse of microwave excitation does occur to cause cooling. Think of microwaves as radio waves since they both are transmitted as massless photons. In a microwave oven the transmitted microwaves are trapped and reflected until absorbed by food, etc. The waves of course travel at the speed of light and are absorbed as quickly as they are generated. The food serves as an antenna to receive the microwaves and the hydrogen in water (H20) is an exceptional antenna. The microwaves are taken up by the electrons orbiting atoms and molecules in the food and the electrons are kicked up into higher more energetic orbits whih is manifested as increased vibration of the atoms and molecules which we sense as heat. The reverse is to use the hot food as the transmitter and the environment as the receiver. As electrons fall back to rest orbits (in one or more steps) photons are released in the form of infrared rays. The problem is that the microwaves can be controlled by the transmitter/antenna configuration while the cooling process is difficult to channel and direct except by using heat reflectors, etc. So the process at the molecular level is reversible but not identical. The microwaves all have fairly uniform frequencies while the cooling process is a mix of frequencies depending on the many orbits of various atoms and molecules that are "cooling" and especially the highest temperature they are cooling from. Hope that helps a little.

Answer 2

not using photons (light, microxaves). what happens in a microwave is that molecules absorb photons. before this happened the photon had some energy, in order for energy to be conserved then the molecule has to gain some energy, it does that by heating up. to cool things with the same procces you'd have to have the molecule give energy to the photon. it'd be cool if you could though, you could make like a microwave refrigorator.

Answer 3

nicely, because of the fact it emits easy whilst it explodes, I actually have a feeling my concept is incorrect, yet besides... The air interior the ball expands under warmth, inflicting a violent burst of warm oxygen to fly out of the ball. The "easy" you have seen would have been element of the white ping pong ball, yet I wasn't there, so i does no longer be conscious of. wish that helped.

Answer 4

No.

Only way to cool things is to extract the heat from them to another object. But alwase the total heat in any system gets bigger.

Answer 5

Yea, sorta. On a small scale. Lasers are used to slow particle motion to make very small quantities of matter reach near absolute zero.

Answer 6

No, we don't know how to actively extract energy yet.

Answer 7

sure, you got a fridge right?