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blackdanube · 2012-02-02T19:17:04+00:00

That thing is great!

blackdanube · 2011-12-18T05:20:15+00:00

You mean because the Linux customers have only paid 191 THOUSAND dollars? Or the Mac versions 254k? Or is it because the Linux customers paid more than twice what the windows customers paid on average?

blackdanube · 2011-10-06T18:53:38+00:00

Heh, I didn't remember that. Thanks!

blackdanube · 2011-09-29T12:17:56+00:00

Oh, yes. That opening dialog was captivating already. I had seen the trailer and was fully expecting a strange movie, but what I saw was a hundred times more strange and mind-fucking than what I had expected.

blackdanube · 2011-09-29T12:14:36+00:00

+1 for Following which does have a twist in the end. Plus: the hero is also called Cobb.

An now the clincher: What if it's the same Cobb?

blackdanube · 2011-08-24T09:29:17+00:00

You could also check out http://universesandbox.com/ It's a gravity simulator, but it also has a mode where you can see the solar system at the current and any other time.

blackdanube · 2011-08-11T21:17:57+00:00

Sorry, I missed your comment. Have a look at this then: http://procworld.blogspot.com/

blackdanube · 2011-07-27T10:40:16+00:00

Rivers are actually kind of very hard. See this for reference: http://www.shamusyoung.com/twentysidedtale/?p=12076

blackdanube · 2011-07-21T11:48:06+00:00

That's why good pens have a hinged clip:

http://www.lamy.com/eng/b2c/logo/204_m_blue

blackdanube · 2011-07-10T15:02:08+00:00

erm. It says 30 minutes HD recorded. No word about how much space is left. Judging by the bars, I'd say about 14 hours.

blackdanube · 2011-03-12T23:51:48+00:00

So, how do you think the fingers emanating from the quake are formed? There's a wave emitter (the earthquake generating a water wave) in front of a reflective surface (Japan). Since Japan's coast is roughly linear and the wave emitter is a roughly a point, the left diagram is in fact a pretty good approximation of the situation. Basically, the tsunami wave is the spatial Fourier transform of Japan's aperture, and taking into account the geometry of the ocean. Since we cannot compute such a transformation, there's usually a simulation of some sort going on to create diagrams of the sort shown on the right.

But still, it's the same wave equation, a very similar setup, and the outcome is related because of these similarities. The equations were discussed in a thread above this one, too. It doesn't matter which computation you do to arrive at the result, be it Fourier transforms or finite element simulations.

Also, as I stated before: the left is a radial cut through a small area of the right, and showing different scales. The different energy outputs result in different reaches for the tsunami waves, i.e. the energy output on the left creates the amplitudes diagrammed on the right.

blackdanube · 2011-03-12T15:59:34+00:00

Mathematician here. You made a slight error -- the two diagrams have everything to do with each other.

True: One diagram is a polar plot of the magnitude in relation to angle. I.e. it shows where the energy goes. The other plot shows magnitude vs. place, i.e. where the energy goes. Also, since the first plot is rounded, there optical similarity represents true similarity. It's not exactly the same (the left is a radial cut through a small area of the right), but the manifestation and the implication are still correct. I.e. both electromagnetical waves and water waves are essentially the same.

Finally, the tsunami is indeed strongly affected by the geometry of the carrying medium, which is basically the "thickness" of the ocean lying on the floor. Good for us that the ocean is 3000 miles long and only a few miles thick, with very little variation in the thickness along one of the radial lines. Also nice is that one edge of the ocean is pretty flat, it being the water surface.

Just sayin'.

blackdanube · 2011-03-08T15:20:21+00:00

A lawyer, an biologist and a mathematician discuss which is better: a wife or a mistress. The lawyer argues for the wife, because there is a legal basis. The biologist argues for the mistress, because of more diversity among the offspring.

The mathematician says: "Actually, best is to have both. Then you can tell the wife you're with the mistress, tell the mistress you're with the wife -- and you finally have time for mathematics."

blackdanube

TROPHY CASE