Vacuum tube sentence example

vacuum tube
  • When this is the case the amplitude of the potential difference of the surfaces of the tubular condenser becomes a maximum, and this is indicated by connecting a vacuum tube filled with neon to the surfaces of the condenser.
    0
    0
  • We might define temperature in the case of a flame or vacuum tube by the temperature which a small totally reflecting body would tend to take up if placed at the spot, but this definition would fail in the case of a spark discharge.
    0
    0
  • Adopting the definition we should have no difficulty in proving that in a vacuum tube gases may be luminous at very low temperatures, but we are doubtful whether such a conclusion is very helpful towards the elucidation of our problem.
    0
    0
  • This is most likely to occur in a discharge through a vacuum tube and it is just there that the greatest variety of spectra is observed.
    0
    0
  • In the case of hydrogen rendered luminous in a vacuum tube we may put approximately u equal to 2000 metres per second, if the translatory motion of the luminous molecules is about the same as that at the ordinary temperature.
    0
    0
    Advertisement
  • Michelson's experiments therefore argue in favour of the view that the luminescence in a vacuum tube is similar to that produced by phosphorescence where the translatory energy does not correspond to the oscillatory energy - but further experiments are desirable.
    0
    0
  • Experiment (c) is, however, generally taken to mean that this closeness of packing cannot be the sole determining cause, for it is argued that if a closed vacuum tube can show both wide and narrow lines according to the mode of discharge, density alone cannot account for the change.
    0
    0
  • According to circumstances, the colour of the light obtained from a Plucker vacuum tube changes "from red to a rich steel blue," to use the words of Crookes, who first described the phenomenon.
    0
    0
  • The phosphorescence produced by friction has been known since the time of Robert Boyle (1663); the diamond becomes luminous in a dark room after exposure to sunlight or in the presence of radium; and many stones phosphoresce beautifully (generally with a pale green light) when subjected to the electric discharge in a vacuum tube.
    0
    0
  • The subject was pursued by Thomson and the Cambridge physicists with great mathematical and experimental ability, and finally the conclusion was reached that in a high vacuum tube the electric charge is carried by particles which have a mass only a fraction, as above mentioned, of that of the hydrogen atom, but which carry a charge equal to the unit electric charge of the hydrogen ion as found by electrochemical researches.
    0
    0
    Advertisement
  • C. Rntgen of Munich made in 1896 his remarkable discovery of the so-called X or Rntgen rays, a class of radiation produced by the impact of the cathode particles against an impervious metallic screen or anticathode placed in the vacuum tube.
    0
    0
  • The final outcome of these investigations was the hypothesis that Thomson's corpuscles or particles composing the cathode discharge in a high vacuum tube must be looked upon as the ultimate constituent of what we call negative electricity; in other words, they are atoms of negative electricity, possessing, however, inertia, and these negative electrons are components at any rate of the chemical atom.
    0
    0
  • He was the first to use the vacuum tube with the capillary part now called a Geissler's tube, by means of which the luminous intensity of feeble electric discharges was raised sufficiently to allow of spectroscopic investigation.
    0
    0
  • Braun devised a form of cathode ray tube, consisting of a vacuum tube having a narrow tubular portion and a bulbous end.
    0
    0
  • A mercury arc rectifier consists of a pool of mercury in a vacuum tube.
    0
    0
    Advertisement
  • C. Röntgen of Munich made in 1896 his remarkable discovery of the so-called X or Röntgen rays, a class of radiation produced by the impact of the cathode particles against an impervious metallic screen or anticathode placed in the vacuum tube.
    0
    0
  • They are created when an electric current is passed through a vacuum tube.
    0
    0
  • Electromagnetic radiation-Packets of energy that develop when an electric current passes through a vacuum tube.
    0
    0
  • Complete blood count (CBC)-A routine analysis performed on a sample of blood taken from the patient's vein with a needle and vacuum tube.
    0
    0
  • While working on the radar research project, Dr. Spencer was required to test out a new type of vacuum tube called a magnetron.
    0
    0
    Advertisement