Matches in DBpedia 2015-10 for { ?s ?p "George Bass was an optician known to have made an achromatic doublet around 1733. The instructions for the constructions were given by Chester Moore Hall. According to Hoyle, Hall wished to keep his work on the achromatic lenses a secret and contracted the manufacture of the crown and flint lenses to two different opticians, Edward Scarlett and James Mann. They in turn sub-contracted the work to the same person, George Bass."@en }
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- George_Bass_(optician) comment "George Bass was an optician known to have made an achromatic doublet around 1733. The instructions for the constructions were given by Chester Moore Hall. According to Hoyle, Hall wished to keep his work on the achromatic lenses a secret and contracted the manufacture of the crown and flint lenses to two different opticians, Edward Scarlett and James Mann. They in turn sub-contracted the work to the same person, George Bass.".