How to Identify a Venomous Snake By Its Bite You’re camping and need to start a fire, so you go looking for wood. You pick up a branch and feel a sharp pain in your hand. A snake slithers away into tall grass. You won’t always be able to identify the ty
Determine remaining daylight on your hand. Use this simple trick to measure the remaining daylight without a watch. Count the finger widths between the sun and the horizon. Each finger is equivalent to 15 minutes, with each hand totaling an hour.
Thermoelectric Fan Powered by a Candle Better writeup than many. Looks good due to heatsink used. A Thermoelectric generator powered by a tealight. It started as an experiment of how much power I could get from one candle. But I liked the idea and it wo