Over on Hackaday.io we have a lot of people playing around with the possibilities presented by cheap printed circuit boards. Whether that means making a quadcopter from fiberglass or a speaker from ...

Reading about micro-engines reminded me of an old idea for conversion of direct heat to rotary motion which was apparently too inefficient for use at the macro scale, but should be more efficient at ...

Please Note: Blog posts are not selected, edited or screened by Seeking Alpha editors. China has caught automobile fever, as rising disposable income among Chinese consumers has led to a boom in car ...