Only marginally concerned with the actual utility of such a project, I recently embarked upon a quest to record and illustrate the rate of water flows. Would you like to measure the rate of a dripping faucet, but lack the sophisticated equipment required? Do not despair! Armed with a gallon jug and a stopwatch, I have prepared an easy-to-use water-flow estimation guide.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.