Biology, 13.05.2021 18:00 risaroo070618
For centuries, scientists believed that light waves traveled through a substance called "aether." Which of the following facts refutes this belief?
A.
Light waves can propagate through a vacuum.
B.
Aether has never been observed.
C.
Light waves can have many different wavelengths and frequencies.
D.
Light waves can travel extremely long distances.
Answers: 2
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