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phototube การใช้

ประโยคมือถือ
  • In addition to high-energy collider physics, Fermilab hosts phototube detectors.
  • The remaining frequencies of light were registered on a phototube to determine what had been absorbed.
  • The instrument's design also required a more sensitive phototube than was commercially available at that time.
  • Beckman was able to obtain small batches of an experimental phototube from RCA for the first Model D instruments.
  • In these, a mechanical switch or a phototube turned an electromagnet on for a brief section of the pendulum's swing.
  • Coleman Instruments had recently coupled a pH meter with an optical phototube unit to examine the visual spectrum ( the Coleman Model DM ).
  • The Model D spectrophotometer, using the experimental RCA phototube, was shown at MIT's Summer Conference on Spectroscopy in July 1941.
  • The new spectrophotometers used a prism to separate light into its absorption spectrum and a phototube to electrically measure the light energy across the spectrum.
  • The 1954 DU spectrophotometer differs in that it claims to be useful from 200 to 1000 millimicrons, and does not mention the ultraviolet phototube.
  • His experiment directly measured potentials, not electron kinetic energy : he found the electron energy by relating it to the maximum stopping potential ( voltage ) in a phototube.
  • Willoughby Smith discovered the photoconductivity of the element selenium in 1873, laying the groundwork for the selenium cell phototube which was used as a pickup in most mechanical scan systems.
  • The X-ray telescope onboard OSO 4 consisted of a single thin NaI ( Tl ) scintillation crystal plus phototube assembly enclosed in a CsI ( Tl ) anti-coincidence shield.
  • The Sail carried a hard X-ray experiment from UCSD, with a single thin NaI ( Tl ) scintillation crystal plus phototube enclosed in a howitzer-shaped CsI ( Tl ) anti-coincidence shield.
  • For example, an increase in frequency results in an increase in the maximum kinetic energy calculated for an electron upon liberation  ultraviolet radiation would require a higher applied stopping potential to stop current in a phototube than blue light.