Thomas Edison launched his 110 Volt DC grid in 1882 in the face of stiff competition from fellow-inventor George Westinghouse.
Thomas Edison was a serial inventor. He began his career tinkering with telegraphy equipment before inventing the first phonograph that recorded voice.
Film capacitors are functionally similar to ceramic capacitors because they are both non-polarized. We can connect them either way around in a direct current environment.
For a series of historical reasons that we do not go into detail here, we have ended up with one foot in each of the direct and alternating current worlds. This causes some frustration. We can no more power our computers from our car batteries, than we can plug our starter motors into our home […]
King Henry VIII was the first recorded owner of a stairlift, after he hurt his leg, became disabled, and could no longer climb the twenty-foot staircase to his bedroom. His servants used naval block and tackle to control ‘the chair that goeth up and down’ according to the palace inventory. This must have been quite […]
Sandia National Laboratories is taking on one of the biggest barriers to the use of robots in emergency response, energy efficiency. Through a project supported by the Defense Advanced Research Projects Agency (DARPA), Sandia is developing technology that will dramatically improve the endurance of legged robots, helping them operate for longer periods while […]
Researchers at General Electric Co. enlisted the help of the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) when they needed help designing a plasma-based power switch. The proposed switch, which GE is developing under contract with the DOE’s Advanced Research Projects Agency-Energy, could contribute to a more advanced and reliable […]
Polarity is a term used in electricity, magnetism and electronic signaling, just to name a few areas. Polarity is defined as, the condition of a body or system in which it has opposing physical properties at different points, especially, magnetic poles or electric charge. In the case of electric current running between two […]
J Just about every home and business is wired for Alternating Current (AC). However, the decision to use Alternating Current (AC), rather than Direct Current (DC), didn’t happen without a lot of trial and error. In the late 1880s, a variety of inventions across the United States and Europe led to a full-scale battle […]