Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 422
i/i pd M i < 2 ^ < o *—» 1 s 1 8 !! H 5 ^ 1! o »<i M 1 i.j K «§ iii 0* 3 ! < Ki tf * :i! O 8 o « H ** o *» p< %» |!i pi Q ;= o fe . iii W ;= <-> •& V > t5 w ^ * u * < 5 Q s k o * H cy £ 1 < Telescopes and Houses for Them 363 bright inner corona would otherwise be.… … THE ELECTRIC COMMUTATOR (TODD){Amherst Eclipse Expedition to Japan, 1896) Instead of pneumatic operation, the necessary move-ments, about 500 in all, were secured at the criticalinstants by the control of an electric commutator 364 Stars and Telescopes %\ N (preceding page). The pneumatic and…
Astronomy
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