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  1. L. A. Jones and E. HuseRelation between time and intensity in photographic exposureJ.O.S.A. 7, p. 1079; 1923.
    [Crossref]
  2. Loyd A. JonesAn instrument (Densitometer) for the measurement of high photographic densities. J.O.S.A. 7, p. 231; 1923.
    [Crossref]
  3. Kron, Eder’s Jahrbuch, p. 6; 1914. Kron, Density law of photographic plates. from the Astrophysical Observatory at Potsdam, 1913.

1923 (2)

L. A. Jones and E. HuseRelation between time and intensity in photographic exposureJ.O.S.A. 7, p. 1079; 1923.
[Crossref]

Loyd A. JonesAn instrument (Densitometer) for the measurement of high photographic densities. J.O.S.A. 7, p. 231; 1923.
[Crossref]

1914 (1)

Kron, Eder’s Jahrbuch, p. 6; 1914. Kron, Density law of photographic plates. from the Astrophysical Observatory at Potsdam, 1913.

Huse, E.

L. A. Jones and E. HuseRelation between time and intensity in photographic exposureJ.O.S.A. 7, p. 1079; 1923.
[Crossref]

Jones, L. A.

L. A. Jones and E. HuseRelation between time and intensity in photographic exposureJ.O.S.A. 7, p. 1079; 1923.
[Crossref]

Jones, Loyd A.

Loyd A. JonesAn instrument (Densitometer) for the measurement of high photographic densities. J.O.S.A. 7, p. 231; 1923.
[Crossref]

Kron,

Kron, Eder’s Jahrbuch, p. 6; 1914. Kron, Density law of photographic plates. from the Astrophysical Observatory at Potsdam, 1913.

Eder’s Jahrbuch (1)

Kron, Eder’s Jahrbuch, p. 6; 1914. Kron, Density law of photographic plates. from the Astrophysical Observatory at Potsdam, 1913.

J.O.S.A. (2)

L. A. Jones and E. HuseRelation between time and intensity in photographic exposureJ.O.S.A. 7, p. 1079; 1923.
[Crossref]

Loyd A. JonesAn instrument (Densitometer) for the measurement of high photographic densities. J.O.S.A. 7, p. 231; 1923.
[Crossref]

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Tables (10)

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Table 2 Standard Developer for Reciprocity Work

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Table 8 Motion Picture Negative Film

Equations (80)

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Exposure ( E ) × rho ( ρ ) = insolation ( η ) .
D = f ( ψ ) ψ = ϕ ( η ) η = θ ( I , t ) E = I · t
η = I · t · 10 a [ log I I 0 ] 2 + 1
log η = log E a [ log I I 0 ] 2 + 1
D = K a [ log I 0 I ] 2 + 1
K y = a ( x log I 0 ) 2 + 1
at log I = 3 ¯ .9 ( 2.1 ) , D = 1.70 and log I = 2.0 , D = 1.70
a ( 2.1 log I 0 ) 2 + 1 = K 1.70
a ( 2.0 log I 0 ) 2 + 1 = K 1.70
log I 0 = 0.05 ( log units 1 ¯ .95 )
at x = 0.05 y = 1.72
a ( 0.05 + 0.05 ) 2 + 1 = K 1.72
a = K 1.72
K = a + 1.72
a ( 2.1 + 0.05 ) 2 + 1 = K 1.70 a 5.20 = k 1.70 2.28 a = K 1.70
2.28 a = a + 1.72 1.70 1.28 a = .02 a = .0156 K = .0156 + 1.72 = 1.736
a ( log I / I 0 ) 2 + 1 = K y
1 ¯ .5
2 ¯ .9
2 ¯ .3
3 ¯ .7
3 ¯ .1
4 ¯ .5
1 ¯ .5
2 ¯ .9
2 ¯ .3
2 ¯ .0
3 ¯ .7
3 ¯ .4
3 ¯ .1
4 ¯ .5
( log I I 0 ) 2 + 1
( log I I 0 ) 2 + 1
a ( log I I 0 ) 2 + 1
K a ( log I I 0 ) 2 + 1
4 ¯ .5
3 ¯ .1
3 ¯ .4
3 ¯ .7
2 ¯ .0
2 ¯ .3
2 ¯ .9
1 ¯ .5
4 ¯ .5
3 ¯ .1
3 ¯ .4
3 ¯ .7
2 ¯ .0
2 ¯ .3
2 ¯ .9
1 ¯ .5
4 ¯ .5
3 ¯ .1
3 ¯ .7
2 ¯ .0
2 ¯ .3
2 ¯ .9
1 ¯ .5
4 ¯ .5
3 ¯ .1
3 ¯ .7
2 ¯ .0
2 ¯ .3
2 ¯ .9
1 ¯ .5
1 ¯ .95
1 ¯ .60
1 ¯ .35
1 ¯ .45
1 ¯ .35
1 ¯ .35
1 ¯ .60
1 ¯ .45
1 ¯ .70
1 ¯ .35
1 ¯ .90
1 ¯ .60
1 ¯ .85
1 ¯ .55
1 ¯ .95