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Corrections

J. A. Van den Akker, "Erratum: A Mechanical Integrator for Evaluating the Integral of the Product of Two Functions and its Application to the Computation of I.C.I. Color Specifications from Spectrophotometric Curves," J. Opt. Soc. Am. 29, 501-501 (1939)
https://www.osapublishing.org/josa/abstract.cfm?uri=josa-29-11-501

References

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  1. D. B. Judd, J. Opt. Soc. Am. 23, 359 (1933).
    [Crossref]
  2. A. C. Hardy, Handbook of Colorimetry (Cambridge, The Technology Press, 1936).
  3. A. C. Hardy, J. Opt. Soc. Am. 25, 305 (1935). An earlier method of integration is described by this author in J. Opt. Soc. Am. 18, 96 (1929).
    [Crossref]
  4. H. W. Swank and M. G. Mellon, J. Opt. Soc. Am. 27, 414 (1937).
    [Crossref]
  5. F. W. Sears, J. Opt. Soc. Am. 29, 77 (1939).
    [Crossref]
  6. J. Razek, J. Opt. Soc. Am. 24, 54 (1934).

1939 (1)

1937 (1)

1935 (1)

1934 (1)

J. Razek, J. Opt. Soc. Am. 24, 54 (1934).

1933 (1)

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Figures (3)

Fig. 1
Fig. 1

Photograph of the I.P.C. mechanical integrator. This instrument is situated conveniently near a G. E. recording spectrophotometer.

Fig. 2
Fig. 2

Schematic drawing of the integrator.

Fig. 3
Fig. 3

Detailed drawing of the beam system showing the path taken by the steel ribbon connecting the follower rod A and the sliding member N.

Equations (7)

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X = λ 1 λ 2 E x ¯ R d λ ,             Y = λ 1 λ 2 E y ¯ R d λ , Z = λ 1 λ 2 E z ¯ R d λ ,
( F P ) / ( O P ) = ( G C ) / ( O C ) .
f = y y / L .
d θ = ( f / r ) d θ .
d x = b k d θ .
d θ = ( y y / L r b k ) d x .
θ = ( 1 / L r b k h i j ) λ 1 λ 2 U R d λ .