Noun:

অবার্ণ লেনস,

achromat's Usage Examples:

An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration.

McClure, The design of superachromatic.

61 cm (24″) achromat Arizona, USA 1896 Halstead Observatory 58.

4 cm (23″) achromat Princeton, USA 1881 Chamberlin Observatory 50 cm (20″) achromat Colorado.

21") achromat – siderostat Paris 1900 Exposition, France 1900–1901 Great Melbourne Telescope.

correction of chromatic and spherical aberration than the much more common achromat lenses.

wavelengths are), and an achromat made with sufficiently low dispersion glass can yield significantly better correction than an achromat made with more conventional.

Others are a new Petzval lens and an achromat lens being crowdfunded by Lomography.

The Chasman–Green lattice, also known as a double bend achromat lattice (DBA lattice), is a special periodic arrangement of magnets designed by Renate.

Melbourne Observatory, Australia 1878 Yerkes Observatory 102 cm (40″) achromat Williams Bay, Wisconsin, USA 1897-2018 Hamburg 1 Meter Reflector 100 cm.

next century reflectors had largely been passed over in favour of small achromats (2 lens refractors).

21" refractor – achromat largest refractor ever built, scrapped after Exhibition.

38 cm aperture f/90 achromat forms a 34 cm diameter solar image at the focal plane.

The telescope has an option to mount a 20 cm achromat, which provides.

The Rodenstock Imagon is an achromat doublet photographic lens design uncorrected for spherical aberration used together with diffusion discs ("sink strainers").

It also utilizes achromat glass lenses in the objective-lens – the large 51 mm (2 in) one in front.

frequency sound reproduction Chasman–Green lattice, common name double bend achromat De Bellis Antiquitatis, a tabletop wargame Dalbandin Airport IATA code.