Star-land : being talks with young people about the wonders of the heavens (1891)
Ball, Robert S. (Robert Stawell), Sir, 1840-1913 · London ; Paris : Cassell & Co. · leaf 39
Fig. 7. This would beour base-line whenfinding the Suns dis-tance. 24 Star-Land. the earth, and thus they know how many thousands ofmiles lie between them when making the observations.This distance means in their drawing what the length of thetable did in ours. From each end of the line they set…
Astronomy
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