Recent content by feynomite

I'm hoping someone will be able to shed some light on this question... it's pretty straightforward and I'm sure someone has the answer. Thanks

I recall being taught that electrons in various "orbitals" or "energy states" absorb and emit photons of a specific frequency. I also learned that relative speed changes the observed wavelength of photons, due to the Doppler Effect. So, how is it that some electron can "absorb" a photon of a...

I think the problem here is 11 P 6 is not counting what you think it is. Rather, it's counting the number of ways to pick 6 of the 11 boxes, where the order picked matters. Like this, where 1,2,3,4,5,6 means the order it was chosen and - means it was not chosen: {1,2,3,4,5,6,-,-,-,-,-}...

Success. Thanks!

You would use it for practical joke purposes only

Awesome, thanks.

Cool concept IBM has there.. kind of like semantic web. Maybe one day when I have time I'll take a peak at the vBulletin source code. I'm thinking it does a full-text search using the words in the title (eg: "how + does + this + message...") onto all initial posts of threads.

Thanks Polly. I already downloaded that and gave it a shot... it makes no sense to me how to work the thing. I just want something where it shows me a ton of symbols, I can choose one, and fill in whatever parameters it needs. When I'm done, it should export tex script (or whatever it's...

Thank you all for answering my question. I will test out these things in a few years after my matter-antimatter space rocket is complete and I embark to the nearest gigantic black hole.

Hello all. This problem is mostly math based, but is being applied to a programming algorithm. I'm working on a problem with a massive amount of normalized vectors in a massive amount of dimensions and need to quickly compute the nearest neighbors of anyone vector. More precisely, I need to...

I've noticed that at the bottom of each post it shows similar threads, and the matches are pretty good. Does anyone know how it goes about doing this? Does it summarize an entire thread? Does it use tags?

I was hoping someone could recommend a nice GUI for equation editing that can output Latex... so I can copy and paste into my future posts, rather than struggling to use the inline Latex Reference thing provided (though it is still pretty cool). Thanks!

Blows my mind. How about contraction? Would the Earth appear contracted along the axis of my rotation, and therefore be elliptical in shape (taller than it is wide)?

If you were on a rocket ship that orbited Earth at near c, what would it be like? At 1000km high, orbiting 40 times per second, you'd have a velocity of .84c. What would, for instance, a radio broadcast emitted from all points of the Earth simultaneously (with respect to the Earth) sound...

So then let's say the black hole is 1000 solar masses, and there's a 100 solar mass star which collides with it head on. The 100 solar mass star will leave a "dent" right at point of the event horizon that it entered at? It's possible to deduce from what direction the star entered the black...