Abstract

Interference bands as close together as 0.4μ were recorded with the Kodak Type 548 Spectroscopic Plates. The penetration of these bands into the emulsion layer was detected by microscopic examination of a vertical section of the photographic record. The photographic record of such bands, the spacing between which depends only upon the angular tilt of a Lloyd mirror and the wave-length of the radiant energy being used, should prove useful as a stage micrometer. Since these photographic records behave as diffraction gratings, the spacing between the band images was checked by measuring the diffraction angle, using radiant energy having a wave-length shorter than the spacing.

© 1950 Optical Society of America

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References

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  1. O. Wiener, Ann. d. Physik 40, 203 (1890).
    [Crossref]
  2. M. G. Lippmann, Comptes Rendus 112, 274 (1891).
  3. H. E. Ives, Astrophys. J. 27, 325 (1908).
    [Crossref]
  4. R. N. Wolfe and F. C. Eisen, J. Opt. Soc. Am. 38, 706 (1948).
    [Crossref]
  5. J. B. Green, J. Opt. Soc. Am. 7, 299 (1923).
    [Crossref]
  6. R. E. Hopkins and F. R. Clapper, J. Opt. Soc. Am. 38, 661 (1948).

1948 (2)

R. N. Wolfe and F. C. Eisen, J. Opt. Soc. Am. 38, 706 (1948).
[Crossref]

R. E. Hopkins and F. R. Clapper, J. Opt. Soc. Am. 38, 661 (1948).

1923 (1)

1908 (1)

H. E. Ives, Astrophys. J. 27, 325 (1908).
[Crossref]

1891 (1)

M. G. Lippmann, Comptes Rendus 112, 274 (1891).

1890 (1)

O. Wiener, Ann. d. Physik 40, 203 (1890).
[Crossref]

Clapper, F. R.

R. E. Hopkins and F. R. Clapper, J. Opt. Soc. Am. 38, 661 (1948).

Eisen, F. C.

Green, J. B.

Hopkins, R. E.

R. E. Hopkins and F. R. Clapper, J. Opt. Soc. Am. 38, 661 (1948).

Ives, H. E.

H. E. Ives, Astrophys. J. 27, 325 (1908).
[Crossref]

Lippmann, M. G.

M. G. Lippmann, Comptes Rendus 112, 274 (1891).

Wiener, O.

O. Wiener, Ann. d. Physik 40, 203 (1890).
[Crossref]

Wolfe, R. N.

Ann. d. Physik (1)

O. Wiener, Ann. d. Physik 40, 203 (1890).
[Crossref]

Astrophys. J. (1)

H. E. Ives, Astrophys. J. 27, 325 (1908).
[Crossref]

Comptes Rendus (1)

M. G. Lippmann, Comptes Rendus 112, 274 (1891).

J. Opt. Soc. Am. (3)

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Figures (4)

Fig. 1
Fig. 1

Lloyd mirror.

Fig. 2(a)
Fig. 2(a)

Record of interference pattern on Type 548GH plate. Distance between lines is 0.5μ.

Fig. 2(b)
Fig. 2(b)

Same record as shown in Fig. 2(a), but with a cylindrical lens introduced into the optical system used for making the final enlargement from the photo-micrographic negative. This lens is used to make the grain detail along the length of the lines out of focus.

Fig. 3
Fig. 3

Vertical section across interference pattern on Type 548-O film. Distance between lines is 0.5μ.

Equations (1)

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S = λ / ( 2 sin θ ) ,