Star-land; being talks with young people about the wonders of the heavens (1899)
Ball, Robert Stawell, Sir, 1840- [from old catalog] · Boston and London, Ginn & company · leaf 107
odest binocular. It is often a usefulinstrument in the Observatory. It gives most beau-tiful pictures of the celestial sceneiy, and you Avouldbe amazed to find how many thousands of stars youcan see with its help which your unaided eye wouldnot show you at all. The binocular will also… … Fig. 36.— The Dome at Dunsiuk Observatory. actual amount, yet still that third is a very consid-erable distance. One-third of 240,000 is 80,000, sothat we can see the moon no better with a binocular A CONVENIENT INSTRUMENT. 95 than Ave should see it were it 80,000 miles away, andwere we viewing it…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
