John Ayrton Paris, an English doctor, constructs his Thaumatrope, in which two images
on either side of a disc of card threaded with string appear to merge when spun quickly.
1826
January 7
Design
for a gas-light night telegraph is published in Mechanics' Magazine.
Combinations of six lamps arranged in a triangle represent letters of the alphabet. The lamps are turned
on and off by means of a set of taps controlling the flow of mains gas, which is ignited by a small
constant pilot light in each lamp. The idea is not known to have been implemented.
1827
l
In France, Dr J N Ničpce makes photographs on
metal plates.
l
Law of resistance and potential in electrical currents, relating current and voltage,
is defined by George S Ohm (1787-1854).
l
Louis Hachette
(1800-1864), left, buys the Brédif bookstore in Paris as the basis for a publishing and
bookselling business.
1828
l
The Rhine from Mainz to Cologne, first of the guide books by Karl
Baedeker, is published.
l
The Spectator weekly paper is founded in London.
l
Construction begins on the first US passenger railroad, from Baltimore to
Ohio, for Charles Carroll, then the richest man in America.
l
A system for communicating at a distance by musical notes (called a telephone)
is invented by Sudré.
1829
l
British book trade imposes retail price controls.
l
Patent is granted to William B Burt of Detroit for the Typographer, the
first US typewriter patent.
l
Louis Jacques-Mandé Daguerre (1789-1851) and J N Ničpce form a partnership to
develop photographic inventions. They work together until 1833.
l
Leopoldi Nobili invents the galvanometer.
l
Belgian Joseph-Antoine Plateau (1801-1883) writes his first theories about the
persistence of vision.
Chronomedia index
Design
for a gas-light night telegraph is published in Mechanics' Magazine.
Combinations of six lamps arranged in a triangle represent letters of the alphabet. The lamps are turned
on and off by means of a set of taps controlling the flow of mains gas, which is ignited by a small
constant pilot light in each lamp. The idea is not known to have been implemented.
Louis Hachette
(1800-1864), left, buys the Brédif bookstore in Paris as the basis for a publishing and
bookselling business.