Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 103
ves is still a mystery, but it is known thatthey are transverse, and that they travel in straight lines. 109. Velocity of Light. — It is easy to find examplesshowing that sound takes time to travel, but all ordinaryexamples fail to show that the same is true of light, andfor many centuries the…
Physics
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