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References

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  1. “The Mechanical Equivalent of Light”— Ives, Coblentz, and Kingsbury—Phys. Rev. p. 209; April, 1915.
  2. “The Photometric Scale”— Ives—Jnl. Franklin Institute, p. 217, August, 1919.
    [Crossref]
  3. “Visibility of Radiant Energy”— Gibson and Tyndall—; August1923.
  4. “A Primary Standard of Light Following the Proposal of Wardner and Burgess”— Ives—Jnl. Franklin Institute, p. 147, February, 1924.
    [Crossref]
  5. Private communication from the Director of the Bureau of Standards.

1924 (1)

“A Primary Standard of Light Following the Proposal of Wardner and Burgess”— Ives—Jnl. Franklin Institute, p. 147, February, 1924.
[Crossref]

1919 (1)

“The Photometric Scale”— Ives—Jnl. Franklin Institute, p. 217, August, 1919.
[Crossref]

1915 (1)

“The Mechanical Equivalent of Light”— Ives, Coblentz, and Kingsbury—Phys. Rev. p. 209; April, 1915.

Coblentz,

“The Mechanical Equivalent of Light”— Ives, Coblentz, and Kingsbury—Phys. Rev. p. 209; April, 1915.

Gibson,

“Visibility of Radiant Energy”— Gibson and Tyndall—; August1923.

Ives,

“A Primary Standard of Light Following the Proposal of Wardner and Burgess”— Ives—Jnl. Franklin Institute, p. 147, February, 1924.
[Crossref]

“The Photometric Scale”— Ives—Jnl. Franklin Institute, p. 217, August, 1919.
[Crossref]

“The Mechanical Equivalent of Light”— Ives, Coblentz, and Kingsbury—Phys. Rev. p. 209; April, 1915.

Kingsbury,

“The Mechanical Equivalent of Light”— Ives, Coblentz, and Kingsbury—Phys. Rev. p. 209; April, 1915.

Tyndall,

“Visibility of Radiant Energy”— Gibson and Tyndall—; August1923.

Jnl. Franklin Institute (2)

“The Photometric Scale”— Ives—Jnl. Franklin Institute, p. 217, August, 1919.
[Crossref]

“A Primary Standard of Light Following the Proposal of Wardner and Burgess”— Ives—Jnl. Franklin Institute, p. 147, February, 1924.
[Crossref]

Phys. Rev. (1)

“The Mechanical Equivalent of Light”— Ives, Coblentz, and Kingsbury—Phys. Rev. p. 209; April, 1915.

Other (2)

Private communication from the Director of the Bureau of Standards.

“Visibility of Radiant Energy”— Gibson and Tyndall—; August1923.

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Figures (1)

Fig. 1
Fig. 1

Variation of luminous efficiency of black body with C2/T for range covering melting temperature of platinum and probable values of C2.

Equations (6)

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m = 1 π b × L R × σ T 4
m = 1 π b × f { C 2 T } × σ T 4
L R = ( 26.62 - 3.375 C 2 T ) 10 - 3
m = 1 π b × σ T 4 × ( 26.62 - 3.375 C 2 T ) 10 - 3
m = .00161 watts per lumen .
m = .00160 5 watt lumen