Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 243
low. Purple. Blue. Blue. Sea Green. Purple. Blue. When the colors of the components are complementary, and thecomponents are of very unequal size, it is possible that only oneof the colors may really exist; the other being, according to alaw of Optics, merely the result of contrast. Such an opinion… … NEBULA. 1. ANNULAR NEBULA, 57 M LYR>£. 2. PLANETARY NEBULA, 3614 H VIRGINIS. 3. NEBULOUS STAR, i ORIONIS. 4. SPIRAL NEBULA, 99 M VIRGINIS.%. CRAB NEBULA IN TAURUS. KEBUUE. 229 which has the other color: which, however, u very far frombeing the case. Another objection is that a similar…
Astronomy
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