A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 125
e—the sun or the moon ? Why ? 194. What are spring tides ? How are they caused ?When do they occur ? 16 they occur at every new and full moon, or a short timeafterward. 195. When the moon is in quadrature, its tidal forceis partly counteracted by that of the sun, since the twoforces act at right… … The annexed diagram represents neap tide. The effect of thesun at A and B, and of the moon at C and D, is to equalize theheight of the water all over the earth. The pupil must understandin inspecting these diagrams, that the actual effect of the sun ormoon is not, by any means, so great as is…
Astronomy
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