Chapter 4.6, Problem 37ES

To determine

The fraction $\frac{1}{50}$ as a decimal, whereat the first launch, the Hubble Space Telescope’s primary mirror was out of shape on the edges by $\frac{1}{50}$ of a human hair and this is very small defect made it difficult to focus on faint objects being viewed. Because the HST was in low Earth orbit, it was serviced by a shuttle, and the defect was corrected.