Episode24:Telescopes before Galileo? Part 2

Chris Lord  of Blackpool & District Astronomical Society continues the story of the telescope leading up to its use by Galileo for astronomical observations. Ibn Sahl and Ibn al-Haythem were two scholars who during the 10th and 11th century developed the fundemental mathematical principles of refraction, reflection and dispersion and kick started the science of […]

Episode23:Telescopes before Galileo? Part 1

Hans Lipperhey’s patent application in the Netherlands for a telescope was formally denied on 2nd October 1608. Nonetheless, it is that individual, that place and that date which history associates with the invention of the telescope. Most of us are aware of the fundamental astronomical discoveries Galileo went on to make with it in the […]