3 papers
physics.hist-ph2022
Analysis of Ayscough's Telescope Adapted to Use at Sea
Igor Nesterenko
An unambiguous accordance between an objective lens for Ayscough's telescope 'Adapted to Use at Sea' and another compound lens which was described by William Eastland in well-known…
physics.hist-ph2021
John Dollond's Prismatic Experiments: The Beginning of a Long Way
Igor Nesterenko
The English optician John Dollond (1706-1761) performed a number of experiments with prisms of various transparent materials and concluded that an achromatic lens could exist. At t…
physics.hist-ph2018
The Initial Approximations for Achromatic Doublets of the XVIII Century
Igor Nesterenko
Analysis of the both type (flint-forward and crown-forward) achromatic doublets was carried out. The investigation revealed possible initial approximations which could be used by o…