US Congress votes to establish a Library of Congress.
l
Dry battery invented by A Volta, ‘Volta’s pile’, made of copper and zinc discs
separated by a moistened cloth electrolyte. Other batteries developed by De Luc (1809) and Zamboni
(1812) in Italy.
l
Existence of infra-red solar rays is discovered by William Herschel and described
in An investigation of the powers of prismatic colours to heat and illuminate objects. Herschel
finds that infra-red generates most heat.
1801
l
Ultra-violet radiation is discovered by Johann W Ritter in Germany while
working with silver chloride.
l
Improved version of Robert’s machine for making reels
of paper is parented by Robert’s employer, the printer François Didot.
l
Joseph-Marie Jacquard (1752-1834) makes his first semi-automated loom, requiring
the human operator to make design decisions, a function that his next version
eliminates.
1802
June
Experiments by (Sir) Humphrey Davy (1778-1829) and Thomas Wedgwood (son of the potter
Josiah) into the use of silver nitrate to create photographic images are published by the Royal
Institution. They are unable to fix the images to prevent the continuing effect on the images of
further exposure to light.
October
Edinburgh Review is first published. It continues until 1929.
1803
l
The accumulator is invented by J W Ritter in Germany.
l
Modern paper-making machinery is invented by two British brothers after whom the
Foudrinier machine is named.
1805
l
Joseph-Marie Jacquard develops a system of wooden punched
cards to control the operation of a loom.
1806
October 7
Carbon paper is patented in London by Ralph Wedgewood.
1808
December 22
Première of Beethoven’s fifth and sixth symphonies in Vienna.
l
Humphrey Davy invents the arc light, in which powerful light is created by passing
an electrical current across the gap between two carbon rods held in alignment. As well as light,
it also generates heat and smoke.
l
The word 'polarisation' is introduced (in French) by Etienne-Louis Malus (1775-1812)
when he discovers that reflected light is polarised.
l
Atomic theory propounded by John Dalton in England in his New System of Chemical
Philosophy.
1809
l
Ernst Chladni demonstrates sound vibrations in solid objects by sprinkling sand on
metal sheets; the sand moves when the sheets are made to vibrate by sound.
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