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References

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  1. H. E. Ives and G. R. Stilwell, J. Opt. Soc. Am. 28, 215 (1938).
    [Crossref]
  2. G. Otting, Physik. Zeits. 40, 681–7 (1939).
  3. R. C. Jones, J. Opt. Soc. Am. 29, 337 (1939).
    [Crossref]
  4. In the experiment as performed by Otting (reference 2), in which the wave-lengths were measured with reference to two neon lines, the central hydrogen canal ray line, as formed by combined direct and reflected light, was found to be unshifted, as compared with the line from a Geissler tube.

1939 (2)

G. Otting, Physik. Zeits. 40, 681–7 (1939).

R. C. Jones, J. Opt. Soc. Am. 29, 337 (1939).
[Crossref]

1938 (1)

J. Opt. Soc. Am. (2)

Physik. Zeits. (1)

G. Otting, Physik. Zeits. 40, 681–7 (1939).

Other (1)

In the experiment as performed by Otting (reference 2), in which the wave-lengths were measured with reference to two neon lines, the central hydrogen canal ray line, as formed by combined direct and reflected light, was found to be unshifted, as compared with the line from a Geissler tube.

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Figures (9)

Fig. 1
Fig. 1

Multiple gap electrode tube used to obtain high accelerating voltages. A—iron perforated electrode; B, C, D—aluminum perforated electrodes; E—concave mirror; F—filament; G, H—shielding glass inner tubes; I—quartz electrode separators.

Fig. 2
Fig. 2

Plot of new observations or shift of center of gravity of approaching and receding Doppler lines.

Fig. 3
Fig. 3

High voltage negative showing suppression of H3 lines, and occurrence of H3O line due to water vapor.

Fig. 4
Fig. 4

Three-part fixed slit for studying behavior of “undisplaced” line. S—slit with razor blade jaws; R—first surface mirrors for introducing light from comparison source; P—prisms.

Fig. 5
Fig. 5

Double-ended canal ray tube. E—concave mirror; B—movable obstructing plate; A—mirror for observing canal ray beam from side of tube.

Fig. 6
Fig. 6

Apparatus for measuring density distribution in canal ray spectrograms. A—Pointolite lamp; B—triple shutter; C—current control for Pointolite lamp; P—spectrogram to be measured; L1—lens for imaging Pointolite on plate; L2—lens for imaging spectrogram on photo-cell slit; S—three-part photo-cell slit; PE1, PE2, PE3—photoelectric cells for measuring image on S; G1—galvanometer for measuring photo-cell currents; PE4, G2—photo-cell and galvanometer for monitoring Pointolite intensity; M —micrometer screw for moving photo-cells across spectrogram image.

Fig. 7
Fig. 7

Positive from spectrogram as projected on triple slit over photo-cells.

Fig. 8
Fig. 8

Typical measurements of transmission of spectrogram made with three-part slit.

Fig. 9
Fig. 9

Determination of shift of center line from densitometer measurements.