"the earths magnetic feild has, i beleive, a resonance of about 5 to 10 c.p.s." Nope. More like 10mHz during 'normal' conditions. Depends alot...
People, I need to write some code (Matlab or IDL) to simulate a CDMA system. I am having issues with knowing what to add and multiply modulo 2....
Ive only ever used operators in a QM course. And hilbert spaces were a shock to the system! function spaces indeed.
As an aside, I find it very interesting/annoying that the QM course has tons of ppl in it who havent done linear algebra. We are struggling a bit....
Ive only just started using Dirac notation... But for the first one, we basically say {apsi1+bpsi2|psi1}=0 and we can expand this to a + bc=0...
I mucked up Psi and psi earlier, Psi1=psi1... Theres only 2 possible psi's in the problem psi1, and psi2 - this changes a few things I think [unless...
Got it all out. I was stuck onthe momentum one when you get a -ihbar d/dx that you have to realise is the p operator.
Thanks. I got the first one out an hour or so ago, had to assume normalised stuff tho - ie: (Phi(x+a))^2 = 1. Ill get into the momentum one...
The top post is displaying what i wanted now :) Any help is much appreciated.
And they expect me to answer it in 3rd year quantum :) I assumed it meant we're not in a specific eigenstate/stationary state. oh, the html has...
Hi All. Edited to allow for html. a is the expectation of x, and b is the expectation of p in the initial 'dynamical state ' I know we dont...
For some reason my uni steers clear of all things Griffiths.
Cheers. I get it now. Been doing complex analysis in maths, and i was thinking of the wrong exponential thing.
Yes, but when you do the maths {according to my lecture notes}, the Aexp(ikt)+Bexp(-ikt) has the B=0 on the RHS of the barrier {as the wave is only...
Hi All. Im confused about the square barrier quantum potential and Schrodinger. If we're tunneling, on the left and right of the potential we...
its upside down.
Integral of 1/(cabin) d(cabin) = log(cabin) + c = houseboat :)
Cheers. I thought that, but had it refuted by someone. Basically from HUP, it exists within delta t, and we can see its effects, but then it...
Hi All. Came accross the idea of a virtual exciton the other day. What is it? An exciton in itself is a 'quasiparticle' so what would a...
The wavefunction for the e- is at the end of the 2nd box on that page. Essentially, we know the wave can be expressed basically as exp(ikx) and we...
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