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| 1267 || Scientific development || English philosopher {{w|Roger Bacon}} suggests the idea of the {{w|telescope}} and the {{w|microscope}}.<ref name="The Science Book: Big Ideas Simply Explained"/> || {{w|United Kingdom}}
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| 1284 || Technological development || Italian inventor {{w|Salvino D’ArmateD'Armati}} from Italy is credited with inventing the first wearable eye glasses.<ref name="History of Microscopes"/><ref name="assdfg"/> || {{w|Italy}}
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| 14th century || Technological development || {{w|Spectacle}}s are first made in {{w|Italy}}.<ref name="History of Microscopes">{{cite web |title=History of Microscopes |url=https://www.microscope.com/education-center/microscopes-101/history-of-microscopes/ |website=microscope.com |accessdate=14 January 2019}}</ref> || {{w|Italy}}
