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What is the earliest mention of use of spyglass by seafarers?
Aug 27, 2018 · What is the earliest mention of use of spyglass by seafarers? How fast it became a commonly used nautical instrument? UPDATE: The most interesting thing I've found so far is in E. …
What evidence is there of the vision aids people used before the ...
Oct 28, 2017 · The Wikipedia article on glasses says ‘scattered evidence exists for use of vision aid devices in Greek and Roman times’ but only cites the example of Nero’s emerald. This article on …
contemporary history - Why was Apple not able to compete with …
Mar 6, 2016 · He acquired a CP/M-knock off OS, 86-DOS, for an absurdly low sum, and then used the product he had essentially obtained for free to undercut Digital Research's CP/M. Windows Internet …