High-voltage electric current, passed through a gas at a pressure much lower than that of the atmosphere, produces a fascinating glow as the gas is...
This tube, made in William Crookes� laboratory, was used for investigating the shadow cast by cathode rays.
Sir William Crookes , an experimental chemist and physicist, discovered a new element in 1861 which he called thallium. Whilst weighing samples he...
This tube, made in William Crooke's laboratory, was used for investigating the deflection of cathode rays by a magnet. It is similar to the one used...
Sir William Crookes , an experimental chemist and physicist, used this tube to demonstrate one of the properties of cathode rays; that they cause...
This tube was produced between 1879 and 1888 in the laboratory of Sir William Crookes . It is one of a set of tubes that was donated to the Science...
Model D168 photomultiplier tube made by Thorn EMI Electron Tubes Ltd, similar to those used on the Hipparcos astronomy satellite. A photomultiplier...
This electronic diode was one of Sir John Ambrose Fleming's own valves or vacuum tubes of the type used with the pioneering Marconi-Fleming radio...
This electronic diode was one of Sir John Ambrose Fleming's own valves or vacuum tubes of the type used with the pioneering Marconi-Fleming radio...
Photograph of Hermann Johann Philipp Sprengel who invented a new type of vacuum tube and devised the U-tube method for comparing liquid densities.
Back page of letter from Sir Joseph J Thomson to Colonel Lyons, Director of the Science Museum, refering to the electron tube, 21 January 1924....
Front page of letter from Sir Joseph J Thomson to Colonel Lyons, Director of the Science Museum, refering to the electron tube, 21 January 1924....
Sir Joseph J Thomson was the son of bookseller who studied sciences at Trinity College, Cambridge. After graduating, he continued to work at...
After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several fields of science. He invented...
Engraving. After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several fields of science....
Chromolithograph by Spy. After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several...
After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several fields of science. He invented...
After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several fields of science. He invented...
After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several fields of science. He invented...
Sir Joseph J Thomson with his apparatus. JJ Thomson was the son of bookseller who studied sciences at Trinity College, Cambridge. After graduating,...劍橋 - 英格蘭
Chromolithograph by Spy. After studying at the Royal College of Chemistry, London, Crookes went on to make significant contributions in several...
One of a series of colour etchings published by T McLean of Haymarket, London. Paul Pry's 'March of Intellect' series of satirical prints was...囚犯
Giant mosquito vacuum mounted on a truck collecting mosquitoes, 1965. Image courtesy Centers for Disease Control / H.E. Stark, Dr William Daniel.
Female worker wearing dark glasses tests vacuum tubes for Bell Systems, 1922. Note: Image has been digitally colorized using a modern process. Colors...美國, 摄影
High power grid-glow tube, 1938. Churchman's cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938].
![High power grid-glow tube, 1938. Churchman's cigarette card, from a series titled Modern Wonders [WA & AC Churchman, Great Britain & Ireland, 1938].](https://media.gettyimages.com/id/558911293/zh/%E7%85%A7%E7%89%87/high-power-grid-glow-tube-1938-churchmans-cigarette-card-from-a-series-titled-modern-wonders-wa.jpg?s=612x612&w=gi&k=20&c=xhhPXfMmnf57clQvzVRi_PHF4xkp171wAA2BZYVRRIw=)
