American inventor Thomas Alva Edison at General Electric company in the United States. A bulb on a table. A number of bulbs blinking on and off. Edison with officials in the laboratory of the company. Edison and the officials walk through the laboratory. They look at a large beaker of liquid. They look at a worker working beside a large oven. They watch other workers at work.
American inventor Thomas Alva Edison at General Electric company in the United States. Edison with officials in a laboratory of the company. A spherical photometer by which the illuminating ability of a lamp may be accurately measured. Edison and the men watch a woman operating the photometer. Edison looks into the photometer. He looks at many lamps being tested in the laboratory.
American inventor Thomas Alva Edison at General Electric company in the United States. A bulb on a table. Edison and men watch a man working on a machine. He looks at workers making light bulbs. Several women seated at desks and working on machines. Edison arrives at a research laboratory in Schenectady, New York. He is greeted by Dr. W. R. Whitney who is the director of research. They shake hands. Officials seated at a desk. Whitney hands a pen to Edison. Edison writes in a book. Whitney and Edison in the laboratory. Edison examines a filament and listens to Whitney.
American inventor Thomas Alva Edison at General Electric company in the United States. Invention of X-ray tube by American physicist William David Coolidge. A man holds a X-ray tube. He also invented ductile tungsten. Coolidge explains about a machine to Edison and Charles Proteus Steinmetz. View of a bulb.
American inventor Thomas Alva Edison at General Electric company in the United States. Edison meets Dr. Irving Langmuir, the inventor of gas filled incandescent lamp. Dr. Langmuir and Edison look at lamps in the laboratory. Langmuir shows a large light bulb to Edison. They discuss. Langmuir explains about a high power vacuum tube to Edison. A hand holding a radio tube.
American inventor Thomas Alva Edison at General Electric company in the United States. Edison meets German-American mathematician and electrical engineer Dr. Charles Proteus Steinmetz . They walk in the plant yard. Men walk behind them. Edison, Steinmetz and men in a laboratory. They discuss. A block of wood on a table. The block disappears, reappears and falls over. A porcelain insulator breaks. Edison and Steinmetz talk seated at a desk. They look at equipment and discuss. Edison, Steinmetz and other man seated in an open car. A crowd of workers stands nearby. An early incandescent lamp.