Recent content by Max cohen

Still not sure I'm getting this right. In the formula U0 is supposed to be the energy of the barrier and E is the potential energy of the photon (since if otherwise, K would be a complex number). Before the photon reaches the barrier, it's energy is E=hf (if the particle would be charged things...

I'm not sure I understand. As for me, this situation is with two 45 degrees prisma closely located next to each other so that some of the light goes thru and some is reflected. You can measure the reflecioncoefficient from the formula in my post so I thought it would be nice to calculate the...

For the tunnel-effect, the relation between the transmissioncoefficent T and length of the barriere L is: T=e^{-2KL} in which: K=\sqrt{\frac{2m(U_0-E)}{\frac{h}{2\pi}^2}} Now, the tunnel-effect is possible for light right? But light means m=0, meaning K=0, meaningT=1! I must be...

I'm not quite sure this has been posted before but the way I learned the universe has no centre is like ths: It's basicly all down to special relativity. Saying that you cannot ever be sure of the fact that you are standing still, since there's always another reference frame in witch you are...

I'm glad some people feel the same way (or at least almost the same way) as I do. I totaly agree with cragwolf and SteveRives about the difference between experiencing and knowing. As for the causality thing, I think Kant made some very interesting notions on this indeed. It might be just an...

How can a photon ever be a absolute quantity? We do not sense photons, we sense something that we have called light and predict that it consists of photons. But we do not even know how these phonons would look like, infact we don't even know if the are particles or waves so how can such a thing...

The way I see it answers A1, A2 and A3 are really different formulations of the same answer. Namely, that thing that is defined by 'what today is'. There's just multiple ways of expressing it. On the other hand, this would mean that multiple questions that result in the same answers are...

Our intuition says that in the entire informationfield there should be an equal amount of questions and answers. But...for every answer there are multiple possible questions although it is not possible for one question to have multiple answers. So...then are there indeed more questions than...

It is often accepted in philosophy of science that a theory is good whenever it is empiricaly adaquate. That is to say, when it matches the the experimental data, it is a theory that we can work with. But in order to do so, it does not nececeraly have to corresponde with reality. About space...

I see... :shy:

So I've been thinking lately about what physics is really about. Isn't it true that at the end of the day physics is just a logical construction for us to understand the material world? Nobody has ever litterly 'seen' enities like energy, charge, electrons or even time and space. Simply...

:-p I think you mean: i^i = e^{-\frac{1}{2}(k + 1)\pi} since it works for every k*(pi/2) with zero k beeing the principal value if I'm correct

Take euler's formula for the identity of complex numbers: e^{xi}=cos(x)+sin(x)i If we substitute the value \pi for x it turns out that e^{i\pi}=-1 most of us already knew this wonderfull trick. BUT if we substitute \frac{\pi}{2} for x we get (because cos pi/2 = 0 and sin pi/2 =...