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But the presence of a constant magnetic field would spawn eddy currents on the rotating part of the heat sink and the fluid itself, leading to heat losses and magnetic resistance created by the eddy currents themselves. Obviously, this isn't set in stone (I can't remember the details), but I remember having to solve a rather complex exercise very similar to this in my Electromagnetic Fields course (I'm an EE). It sure would be interesting, though, to know if this effects could be rendered negligible by using some other materials.

Beware! On behalf of everyone I know, I say: Yeah, right.... There's nothing to see here, move along

I took a course in my university that was called "Introduction to music", which was pretty good. One day, our teacher showed us a BBC documentary that was narrated by George Martin. Sadly, I haven't been able to find it. It was a very interesting show, because he talked exactly about this subject. He analyzed some popular songs and related them to the way he thought music producing is, and shared some interesting ideas. For instance, he said that popular songs tend to be in the 120 bpm range because our hearts beat approximately at that frequcency, and we find it more pleasurable to walk at that particular speed. To illustrate that idea, he took a Bee Gees song and tore it apart (Stayin' Alive, IIRC), and said that we like to walk and sing-along with tunes that have some correlation with our heartbeats. On a personal note, I find that most songs in the popular repertoire have the same verse-chorus structure because, in some ways, it's easier for a writer to compose a song in that way instead of having to ellaborate in different key circles for each part that share a common idea. Think of Coldplay's "42" or Radiohead's "Paranoid Android" (Doug Adams should be proud!). Those two songs don't have a normal verse-chorus structure and are somewhat difficult to follow because of it. For a pop singer it's easier to write a catchy song if it has a very singable chorus to which people can sing-along. Sir George Martin really made me think about popular music, being an amateur musician myself.

Yes, exactly. I've been using TrueCrypt for my important info (mostly pr0n), and have had no problems. It lets you choose between different encryption algorithms (blowfish, twofish, AES, and others I can't remember) and allows you to encrypt individual files, mount an encrypted virtual volume or encrypt your entire hard drive. And, as usual on /., its FOSS.