Electrical Engineering with 360+ answers. Active power is power that does actual work - e.g: creating heat, lifting loads, etc. Reactive power is power where the current is out of phase with the voltage, and the Volts x amps doesn't do any real work. Current that charges a capacitor, for example or current that creates the magnetic field around a coil for another. Apparent power is the mathematical combination of these two.
Alfred Carlton Gilbert, Inventor of the Erector Set â Today in History: February 15. On February 15, 1884, the New Haven inventor of the Erector Set, Alfred Carlton Gilbert, was born. A magician, athlete, and savvy businessman, Gilbert enrolled in medical school at Yale in 1904 to pursue a career as a physical education director.
Homo erectus made the first wooden spears and first wooden bowls. Using stone anvils and point pressure tools, Homo erectus was able to fashion large tool heads and fine long blades, sharpened on both sides.