Itsy Bitsy Gears
In Science News, I spotted another article on miniaturized technology: microscopic gears and a chain! Scientists at Sandia National Labs in New Mexico sculpted thin layers of silicon into a chain that moves gears. The links and teeth are the size of biological cells. It's difficult to imagine just for what they might be used, and George felt it was a solution looking for a problem. Once scientist, Ed Vernon, suggested they might be used to operate shutters for tiny cameras... but with CCDs, why whould you need a tiny camera? Still, it was probably a real thrill to look through the microscope and see those little gears turning!
Radio Time Machine
George was telling me about a new gadget he found on the internet. It is the Radio Program Recorder (RPR)!
What's that? Hmm... I can best describe it as a VCR for your car radio, but that doesn't match it exactly. In fact, once you conjure up in your mind how
such a device might work and what features it would provide, you're bound to be disappointed by the real thing. Still, it is a clever synthesis of existing products into a useful device that so intrigued George he ordered one!
It contains three off-the-shelf devices: a small transistor radio, a digital voice recorder (the kind a student might take to class to tape a lecture), and a tiny FM radio transmitter. The only custom hardware provided by the RPR is a set of cable which connects them all together, plus a perfect-fit zippable pouch to carry them and keep them "integrated".
How does it work? Well, if there's a radio program which you like but is on at an inconvenient time (NPR's Science Friday, which is on from noon to 2:00pm, let's say), you can set the timer on the digital recorder to turn on at noon and turn off at 2:00pm. Then when you get in your car after work, you just tune your car radio to the frequency set on the little FM transmitter, hit "PLAY" on the voice recorder, and you are listening to Science Friday on your car radio!
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Last modified 03/16/2002.
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