A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 86
gain in the same rela-tive position with the earth and sun. This will be evident if we consider that while the earth is com-pleting one revolution, Venus performs one and five-eighths ofanother. But it has to gain an entire revolution to overtake theearth ; and if it takes it 365|- days to gain -f,… … TELESCOPIC VIEWS OF VENUS. in superior conjunction, its full disk is visible, whichgradually diminishes until, at the time of greatest elon- 118. What is its sidereal period ? Its synodical period ? Why is the latter longer ?How calculated ? 119. What is said of its telescopic appearance ? Its…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Novae coelestium terrestriumq[ue] rerum observationes : et fortasse hactenus non uulgatae (1646)](https://img.insideoutlibrary.com/img/200/ia-novaecoelestiumt00font-104-43.webp)
