[Steven] manages to power an LED for 15 minutes using hot and cold water as a battery. He does this using the thermoelectric effect also known as the Seebeck effect, Peltier effect or Thomson effect.

A lot of things tend to get stretched during the holiday season, like shopping budgets and waistbands and patience. This year, [Chris] is stretching the limits of both the mini breadboard and the ...

Gagyo Tech based in Los Angeles has created a new portable battery powered vehicle jump starter, called the KOMA, powerful enough to start any car or truck and apparently even small ships under 25 ...