Recent content by kenewbie

Thanks, I'll read that. The question now is, of course, HOW can this behavior arise, what is happening which makes this possible. But I'll read that thread and do a little digging on my own, it is far ahead of what I am supposed to be looking at anyway. Thanks again.

I had to re-read this a few times but I think i have found that my choice of the word "layer" was poor, as it seems to have a specific meaning. What I meant to ask was if individual atoms sometimes absorb photons without emitting photons, or if this is behavior which only happens in molecules...

Ok, that makes sense. My only question then is if absorption and conversion to heat is an emergent behavior in molecules, or if this happen at the layer of individual atoms as well?

Emission of light from a solid object From my textbook (explaining why an apple is red): We imagine that the red apple in the picture is illuminated by daylight, IE light which contains all the wavelengths of the visible spectrum. The apple is red because the main part of the light it...

Well that clears that up, thanks for confirming :)

If photons have a quanta of energy tied to its frequency, and the energy state of an atom can only be at specific levels, does this mean that atoms will only interact with certain wavelengths of light? As an example, hydrogen emits a photon with a wavelength of 486 nm in one of its state...

Say I want to send a helium balloon into the sky. For all intents and purposes this balloon is circular, with volume V. I will fill it with helium to the same pressure as the air outside it (I assume that this is important). The weight of the balloon and the payload is W. So, I assume I have...

Thanks a lot to both of you, I was clearly wrong in assuming that it cannot be done. k

Function "uniqueness".. Ok, pardon the complete lack of terminology here. I can define a function with one parameter such that no two different inputs give the same output. Example: f(x) = x + 1 No value of x gives the same result as another value of x. I believe that it is impossible to...

Ok, good. I started thinking there might be some "right-handed system" issue here that I didn't understand. Aaah, see, I used "t" and "s" for both of them, that is why I got nonsense then. What you are saying makes sense. Since both parameterizations use different points on the plain and...

Homework Statement This should be simple, but I can't figure out what I did wrong. A(1,2,1) B(1,1,3) C(-1,1,-1) D(1,-2,1) a) Give a "parametric representation" of the plane a which goes through the points A, B and C. b) Give a "parametric representation" of the plane b which goes...

That made perfect sense, thank you! k

Euclid's proof: 1) Assume there is a finite number of primes. 2) Let Pn be the largest prime. 3) Let X be the P1 * P2 ... * Pn + 1 At this point the statement is that "X cannot be divided by P1 through Pn", but why is that? This is not self-obvious to me. How can I know this? k

Remember that "3x" is short-hand for "x + x + x" and that "x^2" is just a shorter way of writing "x * x" So when you write x^2 + 5 + 4x + 6 + 3x^2 + 3x You are "really" writing the following: x*x + 5 + x + x + x + x + 6 + x*x + x*x + x*x + x + x + x Since the order you add things in...

Ok, so this is way outside what is normally posted on this forum, but I am desperately trying to identify a song and I could use the help of a crowd. The piano/synth/organ riff in this song reminds me so much of something that I am 99% sure it is stolen, but I cannot for the life of me...