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  1. Ham, Walsh, and Willis, J. Opt. Soc. Am. 42, 496 (1952).
  2. W. A. Shurcliff, J. Opt. Soc. Am. 39, 1048 (1949).
  3. Perkin-Elmer Instrument News, 1, No. 4, 3 (1950).
  4. Marcel J. E. Golay, J. Opt. Soc. Am 39, 437 (1949).
  5. J. L. Walsh, Am. J. Math. 45, 5 (1923). These functions were termed binary functions in reference 4, and differ from the Walsh functions in that zeros are substituted for the minus one's of the Walsh functions. The computer of Fig. 1 of reference 4 produces simply ordered, modified Walsh functions, whereas the computer of Fig. 2 produces specially ordered, modified Walsh function, further modified in accordance with interleaved "complementary series" [J. Opt. Soc. Am. 41, 469 (1951)].
  6. Elaborate precautions appear required to avoid chopping three, five or multiples of four-pass reflexions in Walsh's four-pass arrangement. In addition to the masking required to eliminate multiple-order reflexions, chopping at an intermediate focus with a vibrating wire or a swinging ribbon, rather than at the side of one of the 45° mirrors, appears imperative in any monoslit multipass system without spherical mirror and with a reasonable ƒ: number, in order to avoid chopping one less or one more pass radiation.

Golay, Marcel J. E.

Marcel J. E. Golay, J. Opt. Soc. Am 39, 437 (1949).

Shurcliff, W. A.

W. A. Shurcliff, J. Opt. Soc. Am. 39, 1048 (1949).

Walsh, J. L.

J. L. Walsh, Am. J. Math. 45, 5 (1923). These functions were termed binary functions in reference 4, and differ from the Walsh functions in that zeros are substituted for the minus one's of the Walsh functions. The computer of Fig. 1 of reference 4 produces simply ordered, modified Walsh functions, whereas the computer of Fig. 2 produces specially ordered, modified Walsh function, further modified in accordance with interleaved "complementary series" [J. Opt. Soc. Am. 41, 469 (1951)].

Other (6)

Ham, Walsh, and Willis, J. Opt. Soc. Am. 42, 496 (1952).

W. A. Shurcliff, J. Opt. Soc. Am. 39, 1048 (1949).

Perkin-Elmer Instrument News, 1, No. 4, 3 (1950).

Marcel J. E. Golay, J. Opt. Soc. Am 39, 437 (1949).

J. L. Walsh, Am. J. Math. 45, 5 (1923). These functions were termed binary functions in reference 4, and differ from the Walsh functions in that zeros are substituted for the minus one's of the Walsh functions. The computer of Fig. 1 of reference 4 produces simply ordered, modified Walsh functions, whereas the computer of Fig. 2 produces specially ordered, modified Walsh function, further modified in accordance with interleaved "complementary series" [J. Opt. Soc. Am. 41, 469 (1951)].

Elaborate precautions appear required to avoid chopping three, five or multiples of four-pass reflexions in Walsh's four-pass arrangement. In addition to the masking required to eliminate multiple-order reflexions, chopping at an intermediate focus with a vibrating wire or a swinging ribbon, rather than at the side of one of the 45° mirrors, appears imperative in any monoslit multipass system without spherical mirror and with a reasonable ƒ: number, in order to avoid chopping one less or one more pass radiation.

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