Jump quickly to results on these stores:
The age of the telescope began modestly with a patent application in 1608 for a three-powered spyglass, filed with the Dutch Republic by a spectacle maker from Middleburg, Hans Lipperhey. News of the device traveled quickly to other parts of Europe, and when Galileo heard about it in the spring of 1609, he built his own instrument, a three-powered spyglass with a convex objective lens and a concave ocular lens that he bought in a spectacle-maker’s shop. By the end of August, he presented an eight-powered telescope of his own devising to the Venetian senate. By November, Galileo had fashioned a twenty-powered telescope, and with it he undertook to observe the Moon, discovering that its surface was rugged and mountainous rather than perfect, as would befit a heavenly body according to classical cosmology. Galileo began writing up his lunar research in January 1610.
Commentary by Albert Van Helden, searchable English translation and Latin live text.
About: Galileo Galilei’s earthshaking book, Sidereus Nuncius (The starry messenger), was a definitive moment in the Renaissance’s departure from ancient cosmology and its assumptions.
Pricing is shown for items sent to or within the U.S., excluding shipping and tax. Please consult the store to determine exact fees. No warranties are made express or implied about the accuracy, timeliness, merit, or value of the information provided. Information subject to change without notice. isbn.nu is not a bookseller, just an information source.