What is Galileo's Telescope? - Universe Today
Refractive Telescopes
NOVA | Galileo's Battle for the Heavens | Two Types of Telescopes | PBS
What did Galileo discover? | Royal Museums Greenwich
How Does a Refracting Telescope Work?
Build your own Galilean telescope - BBC Sky at Night Magazine
What is a planet? (The Renaissance) | Walking in the steps of Newton
Galileo's telescopes Serious errors and inconsistencies in the specifications of the optics and dimensions of has been found in the literature. Griffith Observatory and Adler planetarium replicas
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Galileo and the telescope – Explaining Science
How to build a DIY replica of Galileo's telescope
Refracting telescope - Wikipedia
Galileo's telescope - How it works
Refracting Telescopes - an overview | ScienceDirect Topics
What is Galileo's Telescope? - Universe Today
Telescopes | Physics
Galileo and the telescope – Explaining Science
What is Galilean Telescope ? | it's working | 2 Important Improvements, Discoveries
Galileoscope
History of Science Society -- Committee on Education
1. How Telescopes Work
