Infographic: ElectricityA visual cheat sheet about electrical physics, containing the most important formulas of current and Ohm’s law expressed through an impossible water circuit analogy.(by Pierluigi Scotolati)
ผลการค้นหารูปภาพสำหรับ подключение вентилятора на лм 317
Pump Fire Drill - The Iroquois invented this ingenious pump drill, which uses a flywheel to generate friction. The crossbar and flywheel are made of hardwood; the spindle and fireboard are made from softwoods (as in the ha
Tutorial for a Woven and Half-hitched Paracord Pouch - having a pouch like this would be a great add-on to an emergency kit in a backpack. It will hold small items, and unravels to be about 30 feet of paracord. Fun with paracord.