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References

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  1. M. Luckiesh and Frank K. Moss, “Seeing in Tungsten, Mercury and Sodium Lights,” Trans. I. E. S. 31, 655 (1936).
  2. Matthew Luckiesh and Frank K. Moss, The Science of Seeing (D. Van Nostrand Company, New York, 1937).

1936 (1)

M. Luckiesh and Frank K. Moss, “Seeing in Tungsten, Mercury and Sodium Lights,” Trans. I. E. S. 31, 655 (1936).

Luckiesh, M.

M. Luckiesh and Frank K. Moss, “Seeing in Tungsten, Mercury and Sodium Lights,” Trans. I. E. S. 31, 655 (1936).

Luckiesh, Matthew

Matthew Luckiesh and Frank K. Moss, The Science of Seeing (D. Van Nostrand Company, New York, 1937).

Moss, Frank K.

M. Luckiesh and Frank K. Moss, “Seeing in Tungsten, Mercury and Sodium Lights,” Trans. I. E. S. 31, 655 (1936).

Matthew Luckiesh and Frank K. Moss, The Science of Seeing (D. Van Nostrand Company, New York, 1937).

Trans. I. E. S. (1)

M. Luckiesh and Frank K. Moss, “Seeing in Tungsten, Mercury and Sodium Lights,” Trans. I. E. S. 31, 655 (1936).

Other (1)

Matthew Luckiesh and Frank K. Moss, The Science of Seeing (D. Van Nostrand Company, New York, 1937).

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Figures (4)

Fig. 1
Fig. 1

Spectral distribution of energy emitted by tungsten filament, sodium vapor and mercury vapor (H-3) lamps. The luminosity curve of the eye is for brightness levels greater than one footlambert.

Fig. 2
Fig. 2

Showing the relative magnitude of the Purkinje effect for sodium and mercury illuminants in terms of a tungsten filament illuminant.

Fig. 3
Fig. 3

Showing the effect of a given glare source in reducing the Purkinje effect for sodium light compared with tungsten filament light.

Fig. 4
Fig. 4

The minimum perceptible stimulus difference is the same for tungsten, mercury and sodium illuminants at various low energy-density levels.

Tables (2)

Tables Icon

Table I Showing the influence of the Purkinje effect upon the luminous efficiency (lumens per watt) of sodium and mercury lamps relative to that of the tungsten filament lamp for various brightness levels expressed in footlamberts.

Tables Icon

Table II Minimum perceptible stimulus differences (in percent) obtained by six observers at various brightness levels for three illuminants. The latter were adjusted to produce the same field brightness at 0.35 footlambert. Each lower brightness level was obtained by identical physical reductions applied to the three illuminants.