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Thomas Edison looks at a spherical photometer in a laboratory of General Electric company in the United States.
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.
Physicist William David Coolidge explains about a machine to Thomas Alva Edison in the United States.
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.
Thomas Alva Edison meets Dr. Irving Langmuir and discusses with him in the United States.
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.
Thomas Edison meets Dr. Charles Proteus Steinmetz and talks to him in the United States.
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.
U.S. President John Calvin Coolidge, Jr. works seated at a desk in his executive office in the United States.
U.S. President John Calvin Coolidge, Jr. at work in the United States. The President seated at a desk in his executive office. Coolidge works. An official arrives and gives him a document. He signs the document.
Lieutenants Macready and Kelly are helped in parachutes prior to a transcontinental non stop flight in the United States.
A transcontinental non stop flight in the United States. A U.S. Army Air Service Fokker T-2 aircraft at Roosevelt Field in New York. ' Army Air Service Non-Stop Coast to Coast' painted on the side of the aircraft. Men near the aircraft. Lieutenant John A. Macready and Lt. Oakley G. Kelly are helped in their parachutes beside the aircraft. They pose. The aircraft taxis and takes off. The aircraft in flight. It lands in San Diego, California. Lieutenants Macready and Kelly beside the aircraft. People in the background.