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Quote from: chiralSPO on 07/06/2015 19:50:02no I disagree. The hot water bottle will radiate infrared and microwave energy until it is arbitrarily cold. While we have no experimental proof that there needs to be something on the other end of the radiation (because we live in a universe full of matter) there is nothing in our understanding that would require anything other than the radiating object for the radiation to exist.let's think about energy conservation, without other matter exist, where the heat radiation goes?without other matter exist, there is no gravitation force between the vibrating hot water atoms and the space, the radiation energy/force will bounce back and forth within the hot water bottle.just my theory, opinion various.
no I disagree. The hot water bottle will radiate infrared and microwave energy until it is arbitrarily cold. While we have no experimental proof that there needs to be something on the other end of the radiation (because we live in a universe full of matter) there is nothing in our understanding that would require anything other than the radiating object for the radiation to exist.
a laser beam, if point at sky without a target, it transfers less energy out the laser gun. the system/gun should use less power or dump more heat.got a point?
let's see if in the beginning we have 3 same bottle waters, center 1 is 100 degree C, left 1 is 0 C at 1 meter apart, right 1 is 0 C at 2 meters apart, and that's all the matters in the space. what would happen then?1. gravity will make them accelerate to each other. slowly.2. the left 1 will be heat up faster than the right 1.3. end up every bottle same 33.3333 C after a while.