Beginner's Guide to Astronomy - Refractor Telescopes - Universe Today
Galileo Galilei - (Biography + Contributions + Facts) - Science4Fun
History of Science Society -- Committee on Education
Making a Galilean Telescope
Galileo Galilei: The Invention of the Telescope and Modern Astronomy
Telescopes | Physics
Galileo's Refracting Telescope | Multiwavelength Astronomy
Refracting telescope - Wikipedia
Galileo's Secret Telescope Technology Revealed - MIT Technology Review
Inventions - 17th Century Inventions and Discoveries
Galileo's telescopes Serious errors and inconsistencies in the ...
Laser Beam Expanders | Edmund Optics
Galileo Galilei and his Telescope - SciHi BlogSciHi Blog
GALILEO GALILEI
The First Telescopes (Cosmology: Tools)
9.7 Astrophysics
TAMDAS | Telescopes
What is Galileo's Telescope? - Universe Today
Galileo Telescope Making a Museum Quality Replica for Adler ...
Galileo's telescopes Serious errors and inconsistencies in the ...
Galileo's telescope - How it works
History of Science Society -- Committee on Education
