Recent content by Yhaz

So I recently heard of a simple way of thinking about how the emission of an alpha particle is "beneficial" to a nucleus being stable. The argument goes as follows: "Let's say we have a nucleus that is unstable because the electric repulsion of protons can't balance out the strong force...

Thank you for the effort. I guess the ordering is important when you use operators? Concerning the first part.. Can't really think of any other way than this equality left as a differential. P(\vec{r})d3\vec{r}= ψψ*d3\vec{r} Is there a point in integrating from r to r+dr? I also don't...

much appreciated

An intuitive way to think of it if you are interested. Think of an electric field line created by a charge entering the surface of a sphere or any surface which encloses some volume, is there a way for it to enter the surface and not leave it?

...is what I am looking for, to understand what is written in GR books. Schutz' First Course In GR is the simplest I could find which has a part dedicated to their explanation but I am looking for something simpler than that. I am looking for something which is not a long mathematics textbook...

So going from the last to the first.. I guess there was a mistake in the b. part which asks for rms uncertainty, a typing error in the question? It should be asking for √\langle(r-\langler\rangle)2\rangle which actually clears that part. If that is the case, then the variance...

Homework Statement The average function of the H-atom in its ground state is ψ(\vec{r})=(1/(πa03)1/2exp(-r/a0) a0: Bohr radius a.What is the probability i. P(\vec{r})d3\vec{r} that the electron will be found in the volume d3\vec{r} around \vec{r}? ii. Pdr that the electron will be found...