 ... is, that the velocity of light is the greater the rarer the medium; and that there is also a condition annexed to the explanation of the colors of thin plates which involves another part of the same theory — that is, that where one of the portions...  The Transactions of the Royal Irish Academy - Page 183by Royal Irish Academy - 1837Full view - About this book
 | Royal Irish Academy - 1837 - 642 pages
...displacements of the ethereal particles, in the moment after reflexion, must be of opposite signs in the two cases. This difference in the phase of the vibration...of the denser medium. In fact, it would appear from FRESXEL'S conclusions, that the sign of the vibratory movement is in all cases changed by reflexion... | |
 | Oliver Joseph Thatcher - Encyclopedias and dictionaries - 1907 - 506 pages
...theory — that is, that where one of the portions of light has been reflected at the surface of a rarer medium, it must be supposed to be retarded one-half of the appropriate interval — for instance, in the central black spot of a soap-bubble, where the actual lengths of the paths... | |
 | Oliver Joseph Thatcher - Encyclopedias and dictionaries - 1907 - 618 pages
...same theory—that is, that where one of the portions of light has been reflected at the surface of a rarer medium, it must be supposed to be retarded one-half of the appropriate interval—for instance, in the central black spot of a soap-bubble, where the actual lengths of the... | |
 | Oliver J. Thatcher - History - 2004 - 476 pages
...theory — that is, that where one of the portions of light has been reflected at the surface of a rarer medium, it must be supposed to be retarded one-half of the appropriate interval — for instance, in the central black spot of a soap-bubble, where the actual lengths of the paths... | |
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