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. 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.
Production of chewing gum in the United States. Workers pour ingredients into a large mixer. They place gum into a machine and cut strips into blocks. Blocks are rolled into slabs. A roller scores the slabs of gum. Women break slabs into individual sticks. A machine wraps the sticks of gums into packages. The machine scores the slabs.
Production of light bulbs in the United States. Wire hooks are placed in buttons to give filaments support. Machines in operation in a factory. A woman with pliers assembles the filaments. A machine is used for drilling. A filament is placed in a bulb. A screw socket is attached to the bulb. The lead-in wire is soldered to the base. A woman works. Neon signs on buildings.
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