GG101 Lecture Notes - Shortwave Radio, Thermosphere, Angular Distance
Document Summary
Angular distance n or s of the equator 0-90 . Angular distance east or west of a point on the earths surface measured from the. Longitude (meridians) center of the earth, 0-180 . Great circles lines that cut the earth in half. Locating the prime meridian and standard time. To calculate the distance from the center of the earth to where you are use the sun or the north star (latitude) Solar noon midpoint between the time the sun sets and the sun rises. The earth rotates degree in 1 minute of time. If you know what time it is in a place of known longitude and you know what time it is where you are you can know your longitude. Noon at 10 degrees e longitude, 3:30pm where you are, 3 hours = 15 degrees/hour *3. 5 = 52. 5 longitude degrees. Map a generalized view of an area, as seen from above and reduced in size.
