Recent content by OJFord

Right, that was stupid of me. Thank you both - and for the link. I see why it was comic-worthy now, the answer is certainly not trivial!

Hi, unless I'm missing something here, it seems to me that the answer is that it is infinite, and that that is pretty intuitive. Is that not the case? I would think it could be simplified to view as two parallel and infinite resistances, giving ∞2/2∞, which simplifies to half...

Hmm, thanks for your responses. This page: http://www.neumann-kh-line.com/neumann-kh/glossary.nsf/root/E739BF069CE5E3F7C125728C006784FC?Open&term=directivity Though otherwise helpful, seems to also suggest that directivity = dispersion. Any thoughts? Or am I just reading it wrong?

But this figure (from the article) shows the narrow beam dispersing, or spreading out. http://upload.wikimedia.org/wikipedia/commons/0/06/Prism_rainbow_schema.png Perhaps it's the directionality part I don't really understand then - because to me, that looks like it's varying direction.

Ah, so what is dispersion, then?

My understanding is that as frequency increases, the wave (or waves, rather) become more directional. However, Plasma Antennas' site specifies operation between 1 and 100GHz, and states their product tightly focussess the beam in order to decrease dispersion. Unless I am totally missing...

I've been long looking for some better software. I haven't previously paid, but I'm prepared to pay a small amount for something worthwhile. (Student discount helps!) I've been playing with a now expired evaluation license of NI MultiSim, which seems pretty good. I also quite liked...

Ah that is helpful though, thanks. I sort of disregarded looking for anything else on JSTOR assuming everything would be similarly priced. I will see what else I can find that looks useful for free/cheap. Thanks.

That was the one place I found The Diaspora of British Engineering that I mentioned charged $24. Forgot to specify. Seems like a solid enough idea, I just can't afford it! And no, as I said I'm a sixth form student, the library is fairly small in the grand scheme of things, probably more...

I'm an A level student, and one that doesn't usually write much in school other than the odd word between squiggles and numbers. (I'm studying maths, further maths, physics and electronics.) But now I find myself in the position of writing two different essays, which should be good, as it's...

Why does β+ decay occur? If protons are stable and all baryons eventually decay to protons, then how is it that protons can 'decay' to a neutron? What causes this to happen? (I assume it isn't as frequent as β- decay, or up and down quarks would be coming and going constantly, and we'd be...

Defence electronics or cyber security. That's the issue really, my career interests are also fairly EE/CS split, with some overlap.

Yes I have looked into US Universities, MIT for example offers EECS and I'm doing the pilot online version of 6.002x that you may have heard about. I'm considering applying there but it will be largely grade-dependant, and I probably wouldn't apply anywhere else in the US due to fees. That's...

Would EE and CS be considered "radically different", per chance? Hmm. I appreciate that, it's just that both are subjects I would really like to study further - and also complement each other reasonably well I would have thought. Many companies have departments with great overlap between...

Excellent, thank you. My textbook was just ambiguously worded - I wasn't sure if strangeness was only conserved in strong interactions, or if (as is the case) it's only in strong interactions that strangeness must be conserved. You're answer clears that up, thanks.