The world machine. The first phase: the cosmic mechanism (1907)
Snyder, Carl, 1869-1946 · London, New York [etc.] Longmans, Green, and co. · leaf 95
Fig. It is evident enough that, if the earth is round and the sunat a very great distance, the angle that is marked A wiU beto all intents the same as if it were taken from the centre ofthe earth. But this means that the angle will cut out the samearc in the circle of the sky as, from the centre of… … Fig. 4. The line B Z is my zenith, the direction of my plumb-line.The angle I have measured is the angle marked A, and for arough calculation is the same as the angle C at the earths centre.The arc of the circle S Z is the same as the arc A B on the surfaceof the earth. If the angle A is about 7°…
Cosmology · Celestial mechanics · Science
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
