- Why do telescopes have a big radius of curvature?

Discover Questions

What is the first digit of Graham's Number? If Earths atmosphere was 20 percent as thick as now how big would the temperature swings be? You removed the article on no life in the visible universe that I viewed on June 21 2018 why?!? I want to login again? If the fifth term of a geometric sequence is 81 and the common ratio is 3/4, find the sum of the first 20 terms?