# Recent content by SamRoss

1. ### I Seeking better explanation of some quantum stats formulae

Awesome. Thanks!
2. ### Any good education journals, magazines, etc.?

It sounds to me like no insightful conclusions were reached because the experiment was not designed to garner any. Teachers were not testing out any new, interesting strategies - they were just doing what they normally do - so of course the only difference between the two classes ended up being...
3. ### Any good education journals, magazines, etc.?

Pardon my face slap. Yes, you're right - one experiment with two classes could not be taken as rock-solid evidence. Ideally, the experiment would be run again and again with the same teacher, at the same time of the day, in the same environment, and so on in order to eliminate other factors. Or...
4. ### I Seeking better explanation of some quantum stats formulae

In "Introduction to Quantum Mechanics", Griffiths derives the following formulae for counting the number of configurations for N particles. Distinguishable particles... $$N!\prod_{n=1}^\infty \frac {d^{N_n}_n} {N_n !}$$ Fermions... $$\prod_{n=1}^\infty \frac {d_n!} {N_n!(d_n-N_n)!}$$...
5. ### Any good education journals, magazines, etc.?

Thanks very much. This is just what I've been looking for. :) That's true, but it doesn't mean there's nothing to be learned from investigating. If Class A was taught some material using Strategy A, and Class B was taught the same material using Strategy B, and 70% of Class A ended up mastering...
6. ### Any good education journals, magazines, etc.?

Agreed. Learning in general is an interesting subject, but in my experience, discussions and articles on this topic tend not to be of much practical use. I am after the answers to very simple and specific questions. Some examples: Are students better able to answer percents word problems by...
7. ### Any good education journals, magazines, etc.?

Much appreciated (although actually I've been here for quite some time). I won't get into it here, but I have a great deal to say on this topic. I'll probably start a thread on it in the near future. Those appear to be related to medicine, but I appreciate the response.
8. ### Any good education journals, magazines, etc.?

I had to suffer through a lot of pseudo-science to earn my master's in education. I am suffering through more of it now while I "study" for my administration license. In fact, because anachronistic theories such as VAK (visual, auditory, kinesthetic learners) get floated around so much in the...

10. ### B Uncertainty versus impossibility of measurement

I didn't know this. Thank you. I had been assuming that if it were possible somehow to make a measurement of position and momentum then both of those measurements would be exact even if they were unpredictable beforehand.
11. ### B Uncertainty versus impossibility of measurement

Have I spoken too soon? Here's a quote from pg. 19 of Cresser's Quantum Physics Notes: "However, the uncertainty relation does not say that we cannot measure the position and the momentum at the same time. We certainly can, but we have to live with the fact that each time we repeat this...
12. ### B Uncertainty versus impossibility of measurement

As far as I'm concerned, my original question has been answered satisfactorily by you and others. The HUP does not tell us that we can't measure the position and momentum at the same time but there are other reasons why we cannot do so. I do not have any outstanding questions at the moment; I...
13. ### B Uncertainty versus impossibility of measurement

I read the section you recommended, 4.3, which had to do with the double-slit experiment and a quantum eraser. It was an interesting discussion about how knowledge of a system results in the loss of interference but I'm not sure how it ties into this discussion. Did I read the wrong part? The...
14. ### B Uncertainty versus impossibility of measurement

So there is a "disturbance" inequality which is separate from the standard HUP?
15. ### B Uncertainty versus impossibility of measurement

1. If I understand your posts correctly, the problem with measuring position and momentum simultaneously does not have to do with the HUP. Instead, simultaneously applying the techniques normally used to measure position with the techniques normally used to measure momentum does not result in...