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 52
e days later, onthe Gtli; another view is five days later still, on the 11th; The Sun. 37 and so on until the hist picture, which corresponds to the2Gth. You see, on the first day there is a spot near theleft edge ; by the Gth, this spot is near the middle ; by the11th, it is near the right edge ;… … Fig. 17.—How the Sun turns round. face, and then to return after twenty-five days to the sameplace where they were originally noticed. This appearancecan be explained very simply by a little model. Take a whiteglobe on which a black spot has been painted. I turn theglobe round slowly with the…
Astronomy
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