Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 72
dian nor the celestial equator 1 How does the amountof refraction at the horizon compare with the angular diameters of the sun and moon tWhat singular phenomenon occurs at the rising and setting of the sun and moon 1 Whatextraordinary instance of refraction was once obser ed at Nova Zembla? What… … EFFECT OF REFRACTION UPON THE SUN WHEN ON THE HORIZON. 88. All the other heavenly bodies are similarly af-fected, the time of their rising being accelerated, andthat of their setting retarded. The period of the visi-bility of the stars above the horizon, is therefore in-creased by refraction. 89.…
Astronomy
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