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.
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
Multi Axis No Tail Aircraft. Derived from the Raptor. This aircraft was intended to test the feasibility of full yaw, pitch and roll control without horizontal or vertical tailplanes. Too bad funding ended in
The McDonnell Douglas Phantom II is a tandem two-seat, twin-engine, all-weather, long-range supersonic jet interceptor fighter/fighter-bomber originally developed for the United States Navy by McDonnell Aircraft.