I am trying to understand how to calculate the sum of the following
infinite series, can someone help please:
(5/7)2 - (5/7)3 + (5/7)4 - (5/7)5 + ...
The sum of such a series should be given by:
a / (1-r)
But the value of a = 0 (the first term = 0), hence my confusion.
Thanks
I have two questions I cannot figure out:
How is declination measured in the celestial sphere, in comparison with how terrestrial latitude is measure on earth
How is RA measured in the celestial sphere, in comparison with how terrestrial longitude is measure on earth.
Thanks!
The following statement I have found in a book:
Between an apple and the Earth, gravity dominates because both the apple and Earth are electrically neutral, to a high precision. Matter is neutral to a better part than 1 in 10^20 in order for the electric force of repulsion between the apple...