Which English scientist and philosopher invented the magnifying glass in 1250?
Roger Bacon (philosopher) Nullitate Magiae Bacon, Roger Doctor Mirabilis Roger Bacon Admirable Doctor Rogerus Bacon Rogerius Baco Epistola de Secretis Operibus Artis et Naturae ROGER BACON
nullitate magiae rogerus bacon rogerius baco admirable doctor bacon roger doctor mirabilis roger bacon philosopher epistola de secretis operibus artis et naturae roger bacon
roger bacon
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ROGER BACON