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1810 Chronokey Chronomedia index
Numbers after entries link to the list of references.

links and notes
•  In Zur Farbenlehre (On the Theory of Colours) Johann Wolfgang von Goethe disputes Newton's theory that white light is a combination of coloured light, reverting to an Aristotelian psychological interpretation.  
1813 Chronokey  
•  Idea of using negatives in photography to allow production of multiple prints is promulgated by English inventor Frederick Scott Archer.  
1814 Chronokey  
•  Magnetic effects of violet light rays are demonstrated by Morichini.  
•  Swedish scientist Baron Jöns Jakob Berzelius (1779-1848) publishes Theory of Chemical Proportions and the Chemical Action of Electricity.  
•  Steam-driven cylinder press is used to print The Times in London.  
1816 Chronokey  
•  First experiments in photography are conducted by Frenchman Joseph Nicéphore Nièpce (1765-1833).  
•  Sir David Brewster (1781-1868) invents the kaleidoscope.  
•  Blackwood’s Magazine is founded in Edinburgh, Scotland.  
•  First cheap British periodical, William Cobbett’s Political Register, is founded. It sells for 2d (just under 1p).  
1817 Chronokey  
•  J J Berzelius discovers selenium and lithium. The photoconductive properties of selenium, conductivity to electrical current varying with the amount of light, is employed in the photoelectric cell.  
•  Augustin Fresnel and Thomas Young discover that light is transmitted by transverse vibrations.  
•  The Scotsman newspaper is founded in Edinburgh.  
1819 Chronokey  
•  Flat-bed cylinder printing press is introduced by David Napier.  
•  Freedom of the press is introduced in France.  
•  Principle of electromagnetism, the magnetic field associated with an electric current, is discovered by Danish physicist Hans Christian Oersted (1777-1851).  


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Page updated 10 April 2008
© David Fisher