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The Ranque-Hilsch vortex tube is an interesting piece of equipment. It can, without any moving parts or chemicals, separate hot and cold compressed gasses that are passed through it. Interestingly enough, you can cobble one together with very few parts for fairly cheap. [Otto Belden] tossed one together in a weekend back in 2009 just [...]
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Recreate the look of a tornado by building this water vortex art piece. The components that go into it are all very simple and can be found in your recycling bin with the exception of a motor and a way to drive it. The hard part is ... Read Post

Photojojo, peddlers of all things cool and photography related, have put together a how-to about creating prints without a camera or a chemicals. It's much easier than you think. Follow along... More » Read Post

Winter time isn’t exactly kind on those suffering from arthritis as well as painful joints, and some people resort to hot or cold compresses to get rid of that pain around the body when the mercury drops. Well, why not let technolog... Read Post