
Old hard drive platters make wonderfully good drinks coasters - they look dead smart and expensive and you've stopped people reading your old data into the bargain.
Have you taped all your remotes together, peep-show-style? Have you wired your doorbell to the toilet? What enterprising DIY have you done with technology?
Extra points for using sellotape rather than solder.
( , Thu 20 Aug 2009, 12:30)
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do you get ahold of "off the shelf" x-ray generators?
I *want* some.
( , Wed 26 Aug 2009, 19:08, 2 replies)

without batting an eyelid. X-rays are simple to generate, at least on a basic level. All you need is a source of high energy electrons and something to bash them into, such as a piece of metal.
You can use a reasonably simple vacuum tube to do it.
In practice, you'd actually use some sort of particle accelerator to generate x-rays, and you can buy 'table top' versions of them too!
( , Thu 27 Aug 2009, 9:29, closed)

is, as ever, correct.
You need a high voltage box, which are easy to get hold of, a source of electrons (think the tungsten filament of a light bulb), a target, such as copper, which you bombard with the electrons, ultimately leading to x-ray generation, in our case, as a copper K alpha line. It's deceptively simple and there are specialist companies that will sell you the required kit (for a huge cost) which you then custom buid your optics, detectors and sample chambers into, depending on what it is you're trying to measure.
Or you can use a particle accelerator. But that doesn't tend to fit on the bench quite as snugly.
( , Thu 27 Aug 2009, 10:56, closed)
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