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Sir David Brewster KH PRSE FRS FSA Scot FSSA MICE (11 December 1781 – 10 February 1868) was a Scottish scientist, inventor, author, and academic administrator. In science he is principally remembered for his experimental work in physical optics, mostly concerned with the study of the polarization of light and including the discovery of Brewster's angle.
Video of a rotating kaleidoscope view. In 1814, Sir David Brewster conducted experiments on light polarization by successive reflections between plates of glass and first noted "the circular arrangement of the images of a candle round a center, and the multiplication of the sectors formed by the extremities of the plates of glass". He forgot ...
The kaleidoscope: Sir David Brewster (1781–1868) [145] Keiller's marmalade Janet Keiller (1797) – The first recipe of rind suspended marmalade or Dundee marmalade produced in Dundee. The modern lawnmower – Edwin Beard Budding (1830) [146] The Lucifer friction match: Sir Isaac Holden (1807–1897) [147]
The kaleidoscope: Sir David Brewster (1781–1868) [174] Keiller's marmalade Janet Keiller (1797) - The first recipe of rind suspended marmalade or Dundee marmalade produced in Dundee. The modern lawnmower: Alexander Shanks (1801–1845) [175] The Lucifer friction match: Sir Isaac Holden (1807–1897) [176]
A rival of Wheatstone, Brewster credited the invention of the device to a Mr. Elliot, a "Teacher of Mathematics" from Edinburgh, who, according to Brewster, conceived of the idea as early as 1823 and, in 1839, constructed "a simple stereoscope without lenses or mirrors", consisting of a wooden box 18 inches (46 cm) long, 7 inches (18 cm) wide ...
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The Edinburgh Encyclopædia is an encyclopaedia in 18 volumes, printed and published by William Blackwood and edited by David Brewster between 1808 and 1830. In competition with the Edinburgh-published Encyclopædia Britannica , [ 1 ] the Edinburgh Encyclopædia is generally considered to be strongest on scientific topics, where many of the ...
Some troops leave the battlefield injured. Others return from war with mental wounds. Yet many of the 2 million Iraq and Afghanistan veterans suffer from a condition the Defense Department refuses to acknowledge: Moral injury.