Featured in electronic goldmine
Cornstarch Replaces Cyanide In Clean New Gold Extraction Method
Scientists accidentally discover a new way to isolate gold that is much safer than existing processes, which use toxic cyanide.
pPCBs (Paper Printed Circuit Board)
Peter Blasser has a very unique Web site where you can download and print paper “circuit boards.” These circuits are … Continued
A Little Sunshine, Miss
How to use solar power to power a hand-held radio telescope or a simple solar voltage meter