The eyepiece is a plano-concave lens, which is flat on one ... A telescope's power, or magnification, has to do with its lenses. Magnification is determined by the focal length of the telescope ...
Galileo's contemporary Johannes Kepler, a German mathematician, discovered a way to get beyond the magnification ceiling. Instead of a concave lens near the eye, Kepler used a convex lens.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback