Confirmed: 33mp sensor, 8K, only 2.5 years away

Started 6 months ago | Discussions thread
Michael1000 Senior Member • Posts: 1,274
Re: Hopefully Multi AR

Chas J wrote:

Michael1000 wrote:

Chas J wrote:

'Some' are wrong. Black is best for heat dissipation. White is better at reflecting radiated heat. I.E. (and loosely) Black absorbs, transfers and radiates. White reflects and does not easily transfer or radiate energy.

FWIW.

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Do Not Listen to What I Say ... Listen to What I Mean !.

Nope. Color of surface has nothing to do with infrared radiation from the surface.

If by infrared you mean heat ... you are wrong. Just take a look at the methods used to move thermal loads in engineering.

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Do Not Listen to What I Say ... Listen to What I Mean !.

Why don't you itemize those methods for us?

After you do that, read this article. Here's an excerpt.

Does a dark-painted front door get hotter in the sun than a
white-painted one?
'Of course', says a layman, pointing out that a black surface
absorbs solar radiation much better than a white one.“Should
make no difference” says anotherlayman with some science background,
adding that a surface that absorbs well must also emit
well. A physicist overhearing the conversation nods vaguely, remembering
things like microscopic reversibility and detailed balance.
But his intuition tells him it is not that simple. What
precisely is happening here?

If we look up their emissivity at such wavelengths, we find
values near 1 for almost anything: Common paints have values
around or above 0.9, irrespective of colour. Even water and glass
fall into that category,with emissivities well above 0.9."

I can think of another related area of science laypeople ought to stay out of, but we'll leave that for another forum.

https://www.europhysicsnews.org/articles/epn/pdf/2007/01/epn07102.pdf

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