A New Treatise on Astronomy, and the Use of the Globes, in Two Parts ... |
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Common terms and phrases
according altitude angle apparent apparent diameter astronomical axis Baltimore beginning brass meridian bring called Cape centre circle climate comet consequently Describe determined difference distance earth east ecliptic Elevate equal equator equinoctial EXAMPLES fixed give given place globe greatest heavenly body heavens hence horizon hour inclination inhabitants June Jupiter latitude least length less light longitude magnitude mark mean distance Mercury miles minutes month moon moon's morning motion move namely nearly night node noon o'clock oblique observed opposite orbit parallax parallel passed past period Philadelphia planet pole position PROBLEM quadrant represent respect right ascension rising rising and setting round RULE satellites seen shadow situated solar star sun's sun's declination sun's place supposed surface tides tion true turn the globe Venus vertical visible Washington western edge
Popular passages
Page 198 - If both the places be situated on the same parallel of latitude, their bearing is either east or west from each other ; if the'y be situated on the same meridian, they bear north and south from each other ; if they be situated on the same rhumb-line, that rhumbline is their bearing : if they be not situated on the same rhumb-line, lay the quadrant of altitude over the. two places, and that rhumb-line which is the nearest of being parallel to the quadrant will be their bearing.
Page 299 - ... to 12 ; then, if the given time be before noon ; turn the globe eastward on its axis till the index has passed over as many hours as the time wants of noon...
Page 282 - Bring the sun's place to the eastern edge of the horizon ; and all the stars along that edge of the horizon will rise cosmically, while those along the western edge will set cosmically.
Page 279 - ... to 12 ; then, if the time be after noon, turn the globe westward on its axis, till the index has passed over as many hours as the time is past noon ; but, if the time be before noon, turn the globe eastward till the index has passed over as many hours as the time wants of noon...
Page 301 - IV.) comes to the eastern edge of the horizon, and the hours passed over by the index will show...
Page 209 - ... 12. Turn the globe eastward till the given place comes to the horizon, and the index will shew the time of the sun's rising.
Page 232 - XX.) bring it to the brass meridian, and observe the degree above it ; turn the globe on its axis till some other point of the ecliptic falls under the same degree of the meridian : find this point of the ecliptic on the horizon, and directly against it you will find the day of the month required. This Problem may be performed by the celestial globe in the same manner.
Page 291 - Bring the sun's place in the ecliptic for the given day to the meridian, and set the index to XII. at noon : turn the globe westward till the index points to the given hour ; then the surface of the globe represents the exact face of the heavens at the given place.
Page 258 - Stick a needle in the parallel of the sun's declination for the given day,* and turn the globe on its axis till the needle casts no shadow : fix the globe in this position, and screw the quadrant of altitude over the latitude ; bring the graduated edge of the quadrant to coincide with the sun's place, or the point where the needle is fixed, and the degree on the horizon will show the azimuth.
Page 206 - A particular place, and the hour of the day at that place being given, to find what hour it is at any other place. RULE. Bring the place at which the time is given to the brass meridian, and set the index of the hour circle to 12 ; turn the globe till the other place comes to the meridian, and the hours passed over by the index will be the difference of time between the two places. If the place where the hour is sought lie to the east of that wherein the time is given, count the difference of time...
Bibliographic information
| Title | A New Treatise on Astronomy, and the Use of the Globes, in Two Parts ... |
| Author | James M'Intire |
| Publisher | A.S. Barnes & Company, 1850 |
| Original from | the University of Michigan |
| Digitized | 29 Jun 2007 |
| Length | 326 pages |
| Export Citation | BiBTeX EndNote RefMan |