The elements of astronomy, physical and geometrical (1715)
Gregory, David, 1659-1708, Halley, Edmond, 1656-1742. Synopsis of the astronomy of comets, Adams, John, 1735-1826, former owner. BRL, Boston Public Library (John Adams Library) BRL · London : Printed for J. Nicholson ... and sold by J. Morphew ... · leaf 567
apparent Diameters is certain by obfcrvation. Butthe compr^rifon of the Magnitudes of thofe Bodieswith the Magnitude of the Earth depends uponthe Parallax of feme Planet. If this be not accu-rately glven^ the fdid comparifon cant be madeaccurately. We have already given the beft me-thods of finding…
Astronomy
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
