C1856

Map of the lines of equal polarization in the atmosphere constructed by Sir David Brewster

Mapmaker:

Alexander Keith Johnston

$A 195

In stock

S/N: PANP-022-POL–232159
(LF11)

Full Title:

Map of the lines of equal polarization in the atmosphere constructed by Sir David Brewster

Date:

C1856

Mapmaker:

Alexander Keith Johnston

Condition:

In good condition, with centre folded as issued.

Technique:

Colour printed engraving.

Image Size: 

620mm 
x 480mm

Description:

World of equal polarisation map, from the extra large sized issue of Johnston’s, Physical Atlas of Natural Phenomena.There is a colour key on the left with an explanation of the colours used in the map.

Brewster’s angle (also known as the polarisation angle) is an angle of incidence at which light with a particular polarisation is perfectly transmitted through a transparent dielectric surface, with no reflection.This special angle of incidence is named after the Scottish physicist Sir David Brewster (1781–1868).

Biography:

Alexander Keith Johnston (1804 –1871).

Johnston was a Scottish cartographer educated the University of Edinburgh. He was apprenticed to the Edinburgh engraver and mapmaker, James Kirkwood.

In 1826 he and his brother William began in a printing and engraving business, forming the well-known firm of W. and A. K. Johnston. Johnston was a prolific mapmaker and publisher. He was soon professionally recognised by being appointed Geographer Royal of Scotland, in October 1849 he was elected a Fellow of the Royal Society of Edinburgh and in 1862 he was a founding member of the Meteorological Society of Scotland.

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