Days of the Year
المؤلف:
Franklin Potter and Christopher Jargodzki
المصدر:
Mad about Modern Physics
الجزء والصفحة:
p 13
3-10-2016
598
Days of the Year
The length of the year (i.e., the interval of time between two successive passages of Earth through the same point in its orbit) is about 365.2422 days. How many entire rotations on its own axis does Earth execute during that time?
Answer
While the time interval to return to its same point in the orbit is 365.2422 days, Earth executes 366.2422 rotations on its axis. One can demonstrate this result by taking two coins, holding one in place on a table, and rolling the second coin in contact with the fixed coin without slipping. Therefore the number of solar days is 365.2422, but the number of sidereal days (i.e., with respect to the stars) is one more for one orbit of the Sun.
الاكثر قراءة في طرائف الفيزياء
اخر الاخبار
اخبار العتبة العباسية المقدسة
