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Achromatic telescope

Explanation

The achromatic telescope is a refracting telescope that uses an achromatic lens to correct for chromatic aberration.

  • also known as 消色差望遠鏡

Printed dictionaries and other books with definitions for Achromatic telescope

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Google previewHistorical Encyclopedia of Natural and Mathematical Sciences (2009)

by Ari Ben-Menahem

Independently invented the achromatic telescope, using an objective lens, composed of two kinds of glass so that the chromatic aberration in one kind of glass is compensated for by the other kind of glass. Hall, an amateur scientist from Essex, ...

Google previewThe British encyclopedia, or, Dictionary of arts and sciences (1809)

by William Nicholson

Achromatic Telescope," is a name given to the reft acting telescope, invented by Mr. John Dollond, and so contrived as to remedy the aberration arising from colours, or the different refrangibility of the rays of light. The improvement made by Mr.

Google previewThe London encyclopaedia, or, Universal dictionary of science, art, literature, and practical mechanics, by the orig. ed. of the Encyclopaedia metropolitana [T. Curtis].

by Thomas Curtis (of Grove house sch, Islington)

The calculation of an achromatic object- glass, and in general that of every achromatic telescope, requires a precise knowledge of the ratio of the sines of incidence and refraction, and of the ratio of dispersion of the different kinds of glass ...

Google previewEncyclopædia metropolitana; or, Universal dictionary of knowledge, ed. by E. Smedley, Hugh J. Rose and Henry J. Rose. [With] Plates (1845)

by Edward Smedley

Page & Achromatic telescope 409 Alhazen, an author on Optics .... 397 explains the twilight and horizontal moon — Anamorphosis Ibid . . Apparent magnitude and distance . motion...

Google previewThe British Encyclopedia (1809)

Or, Dictionary of Arts and Sciences. Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge by William Nicholson

Achromatic Telescope," is a name given to the refi acting telescope, invented by Mr. John Dollond, and so contrived as to remedy the aberration arising from colours, or the different refrangibility of the rays of light. The improvement made by Mr.

Google previewA New Mathematical and Philosophical Dictionary (1814)

Comprising an Explanation of Terms and Principles of Pure and Mixed Mathematics, and Such Branches of Natural Philosophy as are Susceptible of Mathematical Investigation. With Historical Sketches of the Rise, Progress and Present State of the Several Departments of These Sciences, and an Account of the Discoveries and Writings of the Most Celebrated Authors, Both Ancient and Modern by Peter Barlow

In telescopes, n and d may be accounted equal, and the formula becomes Achromatic Telescope, a refracting' telescope without colour. See Achromatic. Catatlioptric Telescope, the same as Reflecting Telescope. Dioptric Telescope, the same ...

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