More than a pedometer which only measures steps taken, this accelerometer uses a precision motion sensor, similar to the technology that NASA uses to monitor the movements of astronauts in space, to calculate total physical activity.
Sure wall safes are cool, especially if they are behind a painting in your den, but are they really the best place to store your finest jewelery, valuables and other assorted things you don't want to find missing one ... Continue
Simply use an ordinary household candle and it will float in the water-filled glass vessel. As it burns down, well it actually doesn't, the flame floats in one place illuminating the top and the candle then burns upwards. Weird ... Continue
Four interchangeable floating spheres spin in zero gravity on an antique-style electromagnetic base.