Six valves, including the original thermionic valve of 1889 (back right), made by Sir John Ambrose Fleming (1849-1945) for experiments on an effect se...

Six valves, including the original thermionic valve of 1889 (back right), made by Sir John Ambrose Fleming (1849-1945) for experiments on an effect se...
SuperStock offers millions of photos, videos, and stock assets to creatives around the world. This image of Six valves, including the original thermionic valve of 1889 (back right), made by Sir John Ambrose Fleming (1849-1945) for experiments on an effect se... by Science Museum/SSPL/Science and Society is available for licensing today.
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Image Number:  1895-20142Rights ManagedCredit Line:SuperStock / Science Museum/SSPL/Science and SocietyCollection: Science and Society Contributor: Science Museum/SSPL Model Release:NoProperty Release:NoResolution:3504×2801
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