How To Make A Telescope Lens - The Story Of Science - BBC

How To Make A Telescope Lens - The Story Of Science - Episode 1 Preview - BBC Two. Michael Mosley follows in Galileo's footsteps as he learns how to make a telescope lens. He takes a flat piece of glass and an artillery ball to a Venetian lens maker to find out how Galileo turned these raw materials into a lens fit for his telescope.