虹 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "虹" in Japanese language version.

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NOMOTO.org

Waldman, Gary (1983). Introduction to Light: The Physics of Light, Vision, and Color (2002 revised ed.). Mineola, New York: Dover Publications. p. 193. ISBN 978-0486421186
Newton named seven colors in the spectrum: red, orange, yellow, green, blue, indigo, and violet. More commonly today we only speak of six major divisions, leaving out indigo. A careful reading of Newton’s work indicates that the color he called indigo, we would normally call blue; his blue is then what we would name blue-green or cyan.

John M. McKinley and Paul Doherty (1979). “In search of the "starbow": The appearance of the starfield from a relativistic spaceship”. Am. J. Phys. 47 (4): 309-316. doi:10.1119/1.11834.

ドイツでは5色とされることも多い（鈴木孝夫、1978年、124頁）。全体の色の並びはロシア語ではもっと文学的に「すべての狩人はキジがどこに留まるかを知りたい。」という文章の各単語の最初の文字（КОЖЗГСФ）が色を現わす単語の最初の文字になるようにして覚える。