[ScienceFilter]: I want to drive a nuclear powered car. If nuclear power is good enough for submarines, why can't the technology be scaled down? Looking for big picture such as limitations, environment, storage, infrastructure and adaptations required.
posted by Funmonkey1 on Nov 23, 2009 - 25 answers

I have two 200-watt, 8 ohm speakers. What PA head do I buy? [more inside]
posted by rumsey monument on Apr 23, 2009 - 14 answers

Help me build a bicycle powered water pump. [more inside]
posted by electroboy on Apr 9, 2008 - 21 answers

Looking for a portable digital recorder that is as small as possible but has a powered 1/8" stereo mic in (for a binaural mic), records uncompressed PCM at at least 16-bit 44KHz, has removable storage, and does not need special software to transfer and deal with files on a computer (e.g. it should record direct to aiff or wav on the card.)
posted by neustile on Feb 20, 2008 - 18 answers

I have a need for a CCTV system in an area with no power or wired connections. The images/video would only need to be retrieved in the event of a break in or something of that ilk. What are my options? [more inside]
posted by lemonfridge on Dec 14, 2007 - 2 answers

What could be the most viable environmentally friendly car? I some how focused in compressed air powered cars. [more inside]
posted by curiousleo on Mar 12, 2007 - 19 answers

I recently acquired some Altec Lansing powered speakers that are loud enough that I don't have to keep my MP3 player and Windows volume settings at maximum in order to be able to hear anything. So what should I set them to? Should I mainly rely on the external speaker volume knob?
posted by grouse on Nov 25, 2004 - 14 answers