A translation of Scherffer's treatise on the emendation of dioptrical telescopes... / [translated by Rev.] Samuel Hardy.

Title: 
A translation of Scherffer's treatise on the emendation of dioptrical telescopes... / [translated by Rev.] Samuel Hardy.
Author/Artist: 
Scherffer, Karl.
Publisher: 
London : G. Pearch, 1768.
Description: 
47 p. + 1 pl. : ill. ; cm.
Edition: 
First edition.
Format of Material: 
Books
Subjects: 
Bib ID: 
64052
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Location: 
Secured Stacks - Rare Books
Call Number: 
Uncataloged #779
Notes: 
Rev. Samuel Hardy's translation of Scherffer's Diss. de emendatione telescopii dioptrici per vitrum objectivum compositum recens a Dollondo in anglia inventa (1762).
Dolland's Theorem is Synthetically and Analytically demonstrated, --extended to Glasses of various kinds, and applied to microscopes; several methods for determining the different refractive powers of different kinds of glass are explained; and tables are given for finding the proper radii of concavity and convexity for any compound glass of a given focus.