Right. I just want something portable. Think backcountry backpacking. -Jeff
On May 4, 2009, at 12:02 AM, William Beaty <[email protected]> wrote: > > On Sun, 3 May 2009, Jeffrey Melloy wrote: > >> >> I'd like to figure out a method of cooking with a fresnel lens small >> enough to fit in a backpack. > > That would be a solar oven? No lens needed, just an airtight > foldable box > with extended metallic reflectors. People have easily boiled water > with > versions made of cardboard and foil w/glass front. > > Fresnel lenses are more like a blowtorch: immense heat over 1cm spot > size > > > >> >> On Sun, May 3, 2009 at 9:07 PM, William Beaty <[email protected]> >> wrote: >>> >>> On Sun, 3 May 2009, Ryan Reggio wrote: >>> >>>> so, here's the idea, any idea, inkling, project, experiment, >>>> etc. >>>> you can think of, put here. no idea is too crazy >>> >>> >>> Why not build one which can actually create usable parts? Like >>> the Makerbot CNC, or others? It's not just a demo like the >>> candyfab, >>> it's an actual micro-fab machine shop. Use the first one to spit >>> out >>> specialized parts to make more of them. See: >>> >>> http://www.youtube.com/watch?v=412cDGFZBvc >>> >>> >>> >>> Now if you want CRAZY ...then how about some basic science. But >>> not the >>> boring conventional kind. Instead, step away from conventional >>> reality >>> and temporarily put a stop to our limited mundane expectations. I'm >>> talking about high voltage crackpot experiments. Real mad >>> science, like >>> old B&W science fiction movies. >>> >>> For example, I've always wanted to try harnessing the following HV >>> phenomenon in order to try out some ideas. >>> >>> Threadlike streams of "electric wind" >>> http://amasci.com/freenrg/airthred.html >>> >>> Ideas like storing data in a column of empty space, or perhaps >>> create an >>> audio delay line, or a burglar alarm (breaking the invisible ion >>> beam.) >>> Or perhaps even build an oscilloscope CRT which runs at one >>> atmosphere, no >>> vacuum. >>> >>> >>> ((( >>> ((((((((((((((( ( ( ( ( (O) ) ) ) ) ))))))))))))))))))) >>> William J. Beaty SCIENCE HOBBYIST website >>> billb at amasci com http://amasci.com >>> EE/programmer/sci-exhibits amateur science, hobby projects, sci >>> fair >>> Seattle, WA 206-762-3818 unusual phenomena, tesla coils, weird >>> sci >>> >>>> >>> >> >>> > > (((((((((((((((((( ( ( ( ( (O) ) ) ) ) ))))))))))))))))))) > William J. Beaty SCIENCE HOBBYIST website > billb at amasci com http://amasci.com > EE/programmer/sci-exhibits amateur science, hobby projects, sci fair > Seattle, WA 206-762-3818 unusual phenomena, tesla coils, weird sci > > > --~--~---------~--~----~------------~-------~--~----~ Website: http://saturdayhouse.org/ Post: [email protected] Unsubscribe: [email protected] -~----------~----~----~----~------~----~------~--~---
