SAN FRANCISCO (AP) — Get ready to say goodbye to the once ubiquitous incandescent light bulb, pioneered by Thomas Edison more than a century ago. You can thank — or blame — new federal energy ...

On October 21, 1879 Thomas Edison ran an electric current through a carbonized filament of cotton thread suspended in a glass vacuum tube. It glowed for nearly 14 hours, into the next day.

Many credit the invention of the incandescent light bulb with Edison or Swan but its development actually took place over two centuries and by the time Edison and Swan got involved, the tech was down ...

Long before Thomas Edison’s 1879 patent, a constellation of inventors had already brought electric light to life. From Humphry Davy’s dazzling arc lamps to Joseph Swan’s carbon-filament bulbs, each ...