Recent content by Basip

@ArmanCham you say emit. Does that mean, that the atoms actually absorb the ligh? And the when the excited electron fall down to another energy level, it emit the green light - and the rest is emited as heat?

Why can we see colors? Everyone know that it is because of "reflected" light. But why is the light reflected? I've learned about abortion of light (excitation to higher quantum energy levels) and emission. But I don't know, why and how light is reflected. Please tell me why :-)

Dear community! I watched The Big Bang Theory and watched this episode. If you click on it you would get to a homepage - if you scroll down you would get to a section called Episode Questions -> Physics Bowl. According to the newspapers The Big Bang Theory have an employee who is scientist...

Thank you for your help :-)

Dear BvU! Thank you for your help so far. I don't know how to edit my question, so I reply here. Variables to play with $$B=0.58T$$ $$ \Delta t=0.10s$$ $$d=0.105m$$ Question formulation In a magnetic field, B, at the time, ## \Delta t ##, is the surface of a circular conductor loop,d, halved...

Homework Statement I have the strength of the magnetic field, B, the time, Delta t, a circle formed ring with the diameter, d. I should calculate the induced tension, when the surface is (a) parallel to the B field (b) 50 degrees on the B field Need help to solve it (symbolic if...

I don't know what the complex conjugate og ##\psi^*_2## is. How to figure it out? I know what ##\psi_2## is. When I know what ##\psi_2^*## is, I should just put it in the formula, insert the ##\psi_2## in the formula, find the product and then integrate, am I right? But what is the complex...

I don't what I should substitute ##\psi^*_2## with. ##\psi_2## would I substitute with the ##\psi_2## function and Integrate for the limits ##\pm \infty## (of course ##dx##). The same would I do with ##x^2##. I would do the same with ##\psi^*_2## and at the end I would * them together. Is it...

My wave function: ##\psi_2=N_2 (4y^2-1) e^{-y^2/2}.## Definition of some parts in the wavefunction ##y=x/a##, ##a= \left( \frac{\hbar}{mk} \right)##, ##N_2 = \sqrt{\frac{1}{8a\sqrt{\pi}}}## and x has an arrange from ##\pm 20\cdot 10^{-12}##. Here is my integral: ##<x^2> =...