The Evolution of Telescopes

This chapter examines the historical importance of telescopes, focusing on Galileo's advancements and the impact of his 20-power telescope on astronomical observations. It contrasts refracting and reflecting telescopes, discussing the intricacies of lens grinding and the importance of image clarity over mere magnification. Additionally, the chapter explores the technological developments in telescope optics, highlighting significant figures like Galileo and Newton, and the modern advancements seen in observatories today.