Hello, i have yet another question about photons

About how many photons are in 1 cubic meter here on earth, and how does this compare to the number of photons in 1 cubic meter in some remote region of space, where there are no stars nearby?

Photons move. The number would be constantly changing. I think you are looking for a flux term. Something like Photons per square meter per second.

I don't have a number for you handy, but it would vary depending on where you were at, time of year, weather, etc.

Solar photon flux is 3.8*10^21 photons per square meter per second.

Photon flux from distant stars is discussed here. One first magnitude star would generate about 2*10^9 photons per square meter per second.

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Per square meter, or cubed meter?

and its per second, right?

what if you "freeze frame"...Basically how many photons in a cubic meter at any one moment

3.8 x 10^21 / 3 x 10^8 (speed of photons in meters per second)

1.2x10^13 photons per cubic meter of daylight.

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thanks for the answer antoniseb

one more thing, can photons go through matter?

Basically imagine this scenario... we have a room (10 meters cubed), the walls are made of the most dense material in the world(Osmium perhaps? or maybe some supercooled/liquid gas), and the walls are lets say 100 meters thick. When we finish that...we put a very powerful light source inside, would the photons from the light source ever "get out"? or would they be trapped forever? or would they dissapear (get absorbed somehow)

oh and do photons "live" forever, as in when a photon is created, does it ever vanish for whatever reason, or does it just keep "bouncing around" forever

now a similar scenario...same thing as above, but the walls are supercooled to near absolute zero temperatures..what would happen then?

i know motion is supposed to stop at absolute zero..does this include photons and gravitons (assuming gravitons exist)?

The photons would be absorbed by the materials in the walls in fairly short order. That goes to the general question: matter tends to absorb photons (which is why most substances do not resemble mirrors). The temperature wouldn't matter, though the absorption of the photons would tend to warm things up a bit.

Photons don't have a temperature, so the absolute zero question is irrelevant, or it makes no difference, depending on how you want to look at it.

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You've asked a pretty complicated question because there are a lot of aspects you haven't nailed down. Photons of visible light do not go very far through matter, especially through metals like Osmium. On the other hand, you may be talking about long wave radio waves, or super-high energy gamma rays. These have different capabilities of going through matter.

Were you planning on setting up a house the 100 meter thick Osmium walls to try this out? Just joking... but seriously the answer is "it depends".

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And in the non-cooled situation, the absorption of the photons would warm the box and the box would radiate protons as approximately a black-body source. So photons would come out, but shifted to lower energy.

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