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- We Hand You a Hint: The Hemco Twin-Lite is Made of Condensite, circa 1915 - Chemically synthetic plastics were developed in the early 1900s to replace shellac and hard rubber -- naturally derived substances increasingly in demand for various industrial applications. The Condensite Company of America formed in 1910 to sell a new material first developed at Thomas Edison's West Orange laboratory for phonograph records. Durable and nonconductive, Condensite was well suited for electrical products.
- circa 1915
- Collections - Artifact
We Hand You a Hint: The Hemco Twin-Lite is Made of Condensite, circa 1915
Chemically synthetic plastics were developed in the early 1900s to replace shellac and hard rubber -- naturally derived substances increasingly in demand for various industrial applications. The Condensite Company of America formed in 1910 to sell a new material first developed at Thomas Edison's West Orange laboratory for phonograph records. Durable and nonconductive, Condensite was well suited for electrical products.
- Westinghouse Lamp Company Experimental Radio Tube, 1920-1921 - Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- 1920-1921
- Collections - Artifact
Westinghouse Lamp Company Experimental Radio Tube, 1920-1921
Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- Westinghouse Lamp Company Experimental Radio Tube, 1920-1921 - Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- 1920-1921
- Collections - Artifact
Westinghouse Lamp Company Experimental Radio Tube, 1920-1921
Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- Condensite in the Automotive Industry, March 1922 - Chemically synthetic plastics were developed in the early 1900s to replace shellac and hard rubber -- naturally derived substances increasingly in demand for various industrial applications. The Condensite Company of America formed in 1910 to sell a new material first developed at Thomas Edison's West Orange laboratory for phonograph records. Durable and nonconductive, Condensite was well suited for automotive components.
- March 01, 1922
- Collections - Artifact
Condensite in the Automotive Industry, March 1922
Chemically synthetic plastics were developed in the early 1900s to replace shellac and hard rubber -- naturally derived substances increasingly in demand for various industrial applications. The Condensite Company of America formed in 1910 to sell a new material first developed at Thomas Edison's West Orange laboratory for phonograph records. Durable and nonconductive, Condensite was well suited for automotive components.
- Westinghouse Tungsten Lamp, 1908 -
- 1908
- Collections - Artifact
Westinghouse Tungsten Lamp, 1908
- 35mm Film Magazine for Edison Projecting Kinetoscope, 1900-1911 - A camera magazine is a light-tight storage container used to hold film stock on reels. Many motion-picture cameras have two magazines--one to hold unexposed film, and a magazine containing an empty reel to spool film onto after it has been exposed.
- 1900-1911
- Collections - Artifact
35mm Film Magazine for Edison Projecting Kinetoscope, 1900-1911
A camera magazine is a light-tight storage container used to hold film stock on reels. Many motion-picture cameras have two magazines--one to hold unexposed film, and a magazine containing an empty reel to spool film onto after it has been exposed.
- Westinghouse Lamp Company Experimental Radio Tube, 1920-1921 - Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- 1920-1921
- Collections - Artifact
Westinghouse Lamp Company Experimental Radio Tube, 1920-1921
Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- Westinghouse Lamp Company Experimental Radio Tube, 1920-1921 - Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- 1920-1921
- Collections - Artifact
Westinghouse Lamp Company Experimental Radio Tube, 1920-1921
Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- Westinghouse Lamp Company Experimental Radio Tube, 1920-1921 - Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- 1920-1921
- Collections - Artifact
Westinghouse Lamp Company Experimental Radio Tube, 1920-1921
Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- Westinghouse Lamp Company Experimental Radio Tube, 1920-1921 - Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.
- 1920-1921
- Collections - Artifact
Westinghouse Lamp Company Experimental Radio Tube, 1920-1921
Radio engineer McMurdo Silver created six tiny experimental vacuum tubes while employed at Westinghouse Electric in the early 1920s. The tubes were near-duplicates of Western Electric's VT-5s--the original "peanut" tubes. Tubes like these were essential to the low-powered trench radios used in WWI. Silver went on to found Silver-Marshall Inc. and frequently contributed technical articles to radio hobbyist magazines.