Recent content by rede96

Ah ok, I didn't spot that either. So is Zlower always going to be: (LSL - mean) / std deviation and Zupper always going to be: (USL - mean)/std deviation

Thanks for the reply. I am still a little confused as I want to be able to work all this out myself. To calculate the Z score I believe the formula is: Zupper = (USL - Mean) / std deviation Zlower = (Mean - LSL) / std deviation For the data in my OP (mean 51, std deviation of 0.75, USL 51.5...

Thanks for the reply. Is there a way to do this just with summarised data? That is just with knowing the mean, standard deviation and specification limits? Also could you explain what you mean by look up the cumulative probabilities for the lower and upper limits please? Sorry haven’t done...

Hi All Assuming normal distribution I am trying to understand how to calculate the expected number of defects I would get from given specification limits. For example assume a process mean of 51 and a standard deviation of 0.75 with a lower specification limit of 48.5 and a higher...

Ah ok, I see what you were getting at. Is that what is meant when we say the electron is in a superposition? May I ask when calculating the probability of a single electron being detected are both slits included in the calculation? Not sure I fully understand this part, maybe it’s just my...

Well if all one had to do to understand QM was watch a Feynman lecture and make a few posts on PF we’d all be experts in no time. So rather than be critical of my lack of understanding maybe you could try and help by detailing specifically just what about my reply (I’ve reposted below)I’m...

Yes but that’s simply because of the random nature of a particle that we can’t calculate every point between A and B. And as far as I am aware it doesn’t rule out that it went through other various points between A and B does it? Ah ok, interesting. Didn’t know that, thanks. However my point...

At the risk of being pedantic, as I understand it the wave function only describes the probability of finding the electron at a certain place and time in space when measured. It doesn't really describe the true nature of the electron. Would you say that is true? Have there been any theories...

I would have thought when we shoot an electron at the screen, there are only two possibilities? It either gets absorbed by the barrier or it is detected. So be default if the only obvious conclusion is that it was not absorbed by the barrier doesn't that imply it went through the slits? Isn't...

Thanks for that, yes that is how I was thinking of it too. (see last reply to PeroK) Not sure what goes through both slits, but I certainly wasn't thinking if it as a point like particle, more some sort of 'wave' with certain properties.

Yes, I agree you can only say where the point like element of an electron is once measured, I wasn't trying to say otherwise. But I was wondering if the electron, or any particle is more than just what we measure. What I mean by that is that I don't imagine a particle to be a point like object...

Yes I got that, but I wasn't referring to the pattern directly. For now I was interested in just the number of electrons detected in the two set ups and if they would be the same. I need to get my head around the Math more, but I can get the concept. However what I was saying is that the only...

Maybe I didn’t explain my scenario too well. Let me try again. Imagine two set up’s. The first set up is just the standard double slit experiment which consists of an electron gun, a filter screen with two slits in it and a detector screen. The second set up is exactly the same as the first...

Thanks for the replies. As a follow up, I am assuming there is a relationship between the area and position of the slits in a given set up to the number of electrons detected. I am also assuming that given a set number of electrons were emitted in each experiment, if I was to repeat the...

Firstly I’m just an interested layman who only started delving into QM and physics later on on life. So please forgive my ignorance. One of the things I’m trying to understand better is the wave / particle duality nature of objects. In the classical set up where single electrons are fired one...