Thomas Edison. Thomas Alva Edison (February 11, 1847 â October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb.
Pipe dope, or pipe joint compound, is a gooey compound used to seal the connection between threaded pipes and fittings. Because the threads in pipes and fittings still leave an air gap between the two surfaces, the gap must be filled to make it water tight (or gas tight for gas lines).
Pipe dope has been around for a very long time and tends to be the favorite product for professional plumbers. Teflon tape is also used to seal pipes threads and tends to be the favorite with homeowners because it is less messy than pipe dope. The two products can be used interchangeably, with a couple of exceptions.o apply pipe dope, simply swab a coat onto the threads of a male fitting using the brush applicator supplied with the container. Make sure all the threads are covered and avoid applying dope over the end or inside the fitting.