Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 148
v* 4f\ /m\ … Fig. 138.—Waves in the Ether. the waves in the ether would still be sent out we would haveno means of receiving them. The eye is simply a camera on a very small scale, but whatit lacks in size it makes up by the excellence of its operation.If you will set up a sheet of white cardboard on one end of…
Astronomy · Stars
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