Six lectures on light : delivered in America in 1872-1878 (1886)
Tyndall, John, 1820-1893 · New York : D. Appleton · leaf 235
o bring out. 204 ON LIGHT. LECT. furrowed by an intensely dark band (D), two inches wideand two feet long. Introducing and withdrawing thesodium flame in rapid succession, the sudden appearanceand disappearance of the band of darkness is shown ina most striking manner. In contrast with the… … ! W I have already referred to the experiment of Fou-cault; but other workers also had been engaged on theborders of this subject before it was taken up by Bunsenand Kirchhoff. With a few modifications here intro-duced, I have already used the following language re-garding the precursors of the…
Light
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