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[profitis]

@sarkeizen.i disagree.the word concentrate is good enough coz the tinfoil concentrates the heat rays on its focal point like a curved mirror.the concentration of heat on the focal point will be higher than any other point in the room,always,thus toasting your thermometer.

[profitis]

@sarkeizen.i disagree.the word concentrate is good enough coz the tinfoil concentrates the heat rays on its focal point like a curved mirror.the concentration of heat on the focal point will be higher than any other point in the room,always,thus toasting your thermometer.

[tagor]

@sarkeizen.i disagree.the word concentrate is good enough coz the tinfoil concentrates the heat rays on its focal point like a curved mirror.the concentration of heat on the focal point will be higher than any other point in the room,always,thus toasting your thermometer.

no the alu foil is reflecting the sun ray ...
to keep the surface warm you need a thick black surface ... ( not tinfoil )
it is not a maxwell daemon , it is well known thermodynamics

[sarkeizen]

@sarkeizen.i disagree.the word concentrate is good enough

No, you are simply and completely incorrect.

If you have an isolated room with only a single molecule of gas in it existing at particular temperature.  Then it is moving about at a particular rate.  Right?  Clearly even someone as stupid as you could see that you by choosing any section of the room you could say that heat is either "concentrated" (vomit) or "not concentrated" (vomit again) there depending on the location you are talking about and it's position relative to the  single molecule.  It seems pretty clear that this would be the same even in an isothermal environment.  In which case clearly we can talk about changing "concentrations" without changing entropy.  Thus they are not the same thing.

Szilard's demon is simply a modification of this idea.

[profitis]

@tagor.true yes but if you had taken care to read my last msg properly you would see that im talkin about the FOCAL POINT of a curved piece of tinfoil.the thermometer is precisely on that point,above the foil.its gona get hotter.@sarkeizen i,l use a difrent word to flatter you.do you agree that heat-rays will be focused at the FOCAL POINT of a curved mirror by the curved mirror in a isothermal room.if not why not.