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.
Peter Cooper Hewitt became the inventor of the first fluorescent lamp when he was awarded a patent in 1901 for his low-pressure mercury vapor lamp. The first high-pressure mercury vapor lamp, invented by German-born Edmund Germer, Friedrich Meyer and Hans Spanner, was patented in 1927. Continue Reading.