[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about electromagnetic radiation and the different types of telescopes that rely on various forms of it. Includes a few...

Part of an anecdotal history of optics and the study of light. Extremely thorough treatment of the invention of the telescope. Includes a short biographical sketch and discusses the work of Isaac Newton which focuses on his contribution...

Biography of Galileo Galilei (1564-1642), one of the most famous scientists and inventors of all time. He is best remembered for his invention of the telescope, which caused him to question the contemporary belief that the Earth was the...