Recent content by glance

As f95toli pointed out, tricky is the word here. When I say that "there is no some physical entity vibrating in space" I mean that are not the "photons composing the beam" that somehow go right and then left and then right again and so on. What "oscillates" is an internal property of the...

One must be careful when talking of "photons". When you consider a beam of light (i.e. lot of photons) crossing a polarizer, you can talk of a given percentage of it being absorbed/transmitted, and its intensity decreasing accordingly. When you go down in intensity (i.e. in number of photons...

I'm not sure what you mean by "detector perpendicular to the slits", or by a "flat or solid detector". I think the point here is that one always reads of the double-slit experiment in a rather "abstract" way, which while allows you to appreciate the strangenesses of quantum mechanics without...

When one says that the electrons in an atom are in stationary states (or stationary eigenstates), he means that their state is stationary, meaning that it does not change in time. If they are in a certain state (e.g. they are located around some point in space) you can be sure that if you look...

Can I drop a very related, but slightly more specific question? (it seemed to not worth a new topic on its own, but if you do not think so I will delete this post and go for that option) I get the importance of holomorphic functions, and the relative uselessness of studying continuous but not...

1. First of all ask yourself what would ##\frac{d}{dx}## mean. You can think of the derivative as an "action", an operator that must be applied to some function to get its meaning. A "derivative" without a function to derive is meaningless (at least in this kind of applications). To get that...

That is a very interesting example, thank you. That seems to be tricky! I did some research and stumbled upon this discussion of that matter, in which that question is very well explained. Now however I wonder if it is accidental that in all of these examples the functions are constructed...

Hi The question is the following: is it possible for a (say) real function to be continuous at a certain point internal to its domain, and be discontinuous in some neighborhood of that point? I am not talking about a function defined at a single point or things like that, but of a function...