Defining the state | \alpha > such that:
| \alpha > = Ce^{\alpha {\hat{a}}^{\dagger}} | 0 >\ ,\ C \in \mathbf{R};\ \alpha \in \mathbf{C};
Now, | \alpha > is an eigenstate of the lowering operator \hat{a}, isn't it?
In other words, the statement that \hat{a} | \alpha >\ =\ \alpha | \alpha >...
Considering the decay of certain exotic mesons, such as the following:
B^{+} --> D^{0} \pi^{+}
Apparently the decay proceeds via a weak interaction where multiple W boson exchanges occur.
I was trying to nut out how this actually occurs, and draw up a sensible Feynman diagram...
OK, I'm currently in the process of designing an experiment to measure the rest lifetime of the muon, using a vertical stack of four flat scintillation detectors separated by lead plates, and coincidence electronics, Time-Amplitude converter, etc. to acquire data from the cosmic ray muons...
I don't have Al to do a thermite reaction - i wonder if heating with charcoal will do it?
I'll try milling the powder very fine, and try conc. H2SO4 and see if it is any different.
I'm actually trying to synthesize Na2Cr2O7.
OK, so i have Cr(III) Oxide, Cr2O3, and i wish to dissolve this in conc. HCl to form Cr(III) Chloride - however, at room temperature, this reaction just doesn't seem to work readily - i would have thought it would. Would heating facilitate the desired reaction? Would the use of another acid...
i.e. the Douglas Robb memorial lectures from Auckland University,
They're available streamed here:
http://www.vega.org.uk/series/lectures/feynman/
But i want to download the files. Can i grab them anywhere?
Firstly, can someone please demonstrate the proper Latex code for the terminals on a multiple integral? Thanks!
Anyway, as you can probably see, I'm calculating the volume enclosed by x^2+y^2+z^2 = 2 and z = x^2+y^2 using a change to cylindrical coordinates.
V =...
\sum_{n=1}^\infty \frac{cos n}{n^2}
Now, which test should i try? It doesn't appear to be anything straightforward like ratio test, comparison test etc and it's not a straightforward limit.
cos(n) goes negative too, so that complicates things.
Can anyone offer me any advice on a problem...
Hi,
I'm trying to figure out how to dissolve metallic Au in solution, for an electroplating solution, without the use of Nitric Acid, Cyanides, or other chemicals which i cannot obtain.
I can obtain many more common (less suspicious and dangerous) chemicals, such as concentrated HCl, H2SO4...
given f(x,y) = (xy+(x^3))/(x^2+xy)
I want to calculate df/dx (i.e. first partial derivative wrt x) at the origin.
f is undefined there, but i can still do it, right?
so, we get (x^2 + 2xy -y)/(x^2 +2xy +y^2)
I'm not really sure of where to go with this, though.
I think the basic...