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 37
.They are obliged to use a muchmore accurate wray of measuring the I.— mis would be i ±.1 i ij_- i *xi ■ Base-line when aRgles than by cutting out cards with pairs of scissors; and as the astrono-mer at A is not able to see his friendat B, it becomes no easy matter to measure the anglesaccurately.… … Fig. 7.— This would beour finding the SunsDistance. WHY DISTANT THINGS LOOK SMALL. 25 They will not, indeed, make a little sketch such assufficed for our purpose. They make a calculationwhich is a much more accurate way of effecting truemeasurement. The astronomers know the size of theearth, and…
Astronomy
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-201-122.webp)
