A compendium of astronomy: being a concise description of the most interesting phenomena of the heavens (1849)

Record Details:

Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

21 distance on each side of this path are divided into twelve '-constellations; and among these the Sun appears to ove, changing his place from west to east nearly one agree daily ; that is, supposing we could see the stars y day, the star which the Sun covers one day would be early a degree to the westward of him the next; so oat those stars which are at present on the meridian at ®pon, six months hence will be on the meridian at mid- O'ght. Hence arises the difference between the solar od the sidereal day. The sidereal day is the time .h elapses between two passages of a star across the endian, and is in fact a complete revolution of the ^ abes place in 23 hours, 56 minutes, hilst the Earth has made one revolution, the Sun has Ranged his place in the ecliptic nearly a degree ; and fo ° u’ 1 fllerefol ' e must turn a degree more on its axis r the Sun to arrive a second time at a meridian of any g. a< ? e - occupies 4 min. longer ; and the period of (] lours is called a solar day. After the lapse of 365 ays, or one year, the Sun returns to the same place p r( ° n g the stars, as that in which he was a year DIAGRAM XYI. Iat^ epreSen . tS the % ures R iven to the different Constel- p, ons , which are called the signs of the Zodiac, r, Cir pames are Aries (the Ram). Taurus (the Bull) emini (the Twins), Cancer (the Crab), Leo (the Lion)’ Sco g ° Vlr S in )’ Libra ( tlle Scales), Scorpio (the 0 03 r P lon ); Sagittarius (the Archer), Capricornus (the ■f'isb \ ^ fJUalius ( tbe Water-bearer), Pisces (the es) : the Earth is shewn in its path, with its moon. Part V't 0 "' C .° me t0 what is to us the most important its * n- 6 Sciencc ’ tbe astronomy of our own planet and ar e ateI ite ‘—■ Pbat tbe Earth is a globular body, there '•Tep-n 311 - 7 - Ways of P rovin g- Though the different they lantles in tbe Earth’s surface appear great to us, glob 316 Vei T s . ma H when compared with the size of the e >" not being greater in proportion to the Earth’s