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 (meaning upright man, from the Latin Ärigere, to put up, set upright) is an extinct species of hominid that lived throughout most of the Pleistocene geological epoch. Its earliest fossil evidence dates to 1.9 million years ago and the most recent to 70,000 years ago.t is generally thought that H. erectus originated in Africa and spread from there, migrating throughout Eurasia as far as Georgia, India, Sri Lanka, China and Java. But other scientists posit that the species rose first, or separately, in Asia.