Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were developed by giants: the refractor by Galileo and the reflector by Newton.

Professional Astronomical Refractor Telescope: If you are interested in astronomy or like to explore the night sky, the MEEZAA astronomical telescope is for you. A perfect telescope for adults ...

McKim Observatory still houses many of its original instruments, including a 9.53 inch Clark Refractor telescope, a meridian transit telescope, and a gravity driven chronograph. Missing from the early ...

Refraction errors can also be identified using a refractor, which uses convex lenses to examine how the eye processes light.

The all-new OptoChek™ Plus Auto Refractor + Keratometer, part of the VisionChek™ Digital Exam Suite, combines technology with simplicity at the core of your exam. The new, compact, modern ...