Charles Link's latest activity

I think it is probably impractical and perhaps almost impossible to use Stefan's law, (which is the power radiated over the complete...

So it's still a single colour analysis except for some special applications? I guess that way is chosen because the 'numbers' allow /...

Perhaps we should include a little more detail. Stefan's law is ## M=\sigma T^4 ## where ## M ## is ## \pi ## times the integral of...

That was a pretty good effort! Thanks. That's the power of PF; we bump into islands of expertise all over the place in these forums. You...

I don't know that I can answer what you are asking, but for a laboratory type blackbody at approximately 1000 degrees Centigrade, one...

or ##RL^2 = (2x)^2 - (2)^2 = 4x^2-4## We can also draw the other diagonal and apply Ptolemy directly: ##2x + 22x =...

@neilparker62 My solution with your diagram is simple. Let RL=red line. Then ## (RL)^2=2^2+4x^2-2(2)(2x) \cos{\theta} ## and ##...

Thanks - just once though! Since one triangle is right, Pythagoras will there suffice.

@neilparker62 Yes, the law of cosines used twice with your diagram solves it. Very good. :)

@Gavran Still I am a little disappointed that the PF members who can respond to these posts don't seem to have looked carefully over...

By replacing humans with artificial intelligence, this forum would lose its soul, and some kind of emptiness would be left.

a copy and paste of mine from the thread "a trigonometry problem of interest": I'm finding it somewhat amazing how the ai overview is...

I'm finding it somewhat amazing how the ai overview is able to summarize for me the steps that are needed for the method of finding...

Personal opinion: Machine Learning is, at this time, not a reliable tool. It needs much more work by folks without a financial agenda...