Recent content by rama_v

OUCH. Sorry, no way I can read or make sense of that - please reformat it!

helper is a physics teacher. Listen to him. Don't need essays - its physics for goodness sake. Dot-points will suffice so long as the content is there.

Scientists are really lazy when it comes to writing. That's because we prefer to do more science :-) ...

Power = dW/dt (where W is work), in general. In this case: P= d/dt(IVt) = IV = (V/R)*V=V2/R Power is measured in Watts, which is the same as Joules/s.

That's it. I found the first half OK, but got lost completely by week 10. I'm probably no longer that good at maths, but I like to blame the fact that I was doing 30UOC, and never did the pre-reqs (I had no clue about Fourier representations, for example). On a different note, if any of you...

How many people here have taken MATH2130? Did anyone find it as impossibly hard as I did, or was it just because I didn't even do the pre-reqs that I found it insanely difficult?

Being an academic isn't so bad - you get average pay, pretty good hours, not much stress, and you get to do cool research and publish papers in journals. Oh, and you get to travel heaps :-)

I did extension 1 at school and found MATH1131 and MATH1231 easy pickings for the most part (there were a couple of hard sections in calculus, but a little bit of time spent understanding them made a world of difference, and algebra was very simple after a while). If you do the homework...

Wow, this thread is still active four years after I started it. Such a silly question I asked then. I wish they taught Taylor series (and many other things) in high school maths, it would have been really useful, and would have simplified limit proofs unbelievably. E.g. Behaviour of Sin (x)/x...

If you want to go more deeply into it, you have to look at modes of vibration within the cavity. Think of these like the standing waves on a string. The higher frequencies have more possible modes, so classically one predicted that the shorter the wavelength, the greater the number of modes, and...

This is the problem with reducing BCS theory to a bunch of words. The phonon-mediated attraction depends on coupling of vibrational modes within the crystal (i.e., the phonons) with the electron (which have a wavevector, usually denoted by the letter k). The theory is mathematical, complicated...

Sure - please msg me.

The lattice is the grid.

No, it's not in the sylabus. But if it helps you understand why things occur then you should learn it :)

Firstly, diffraction: To think of it you might like to look at the Huygen's-Fresnel construction. Basically, consider a spherical wave propagating radially outwards. Each spot on the wave front acts as a source of secondary waves. From this construction it is easy to see how diffraction occurs...