The Fluorescence Phenomenon

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In his book „Ars MagnaLucis et Umbrae“,Athanasius Kircher(1602-1680) describes theeffect of a wood extract(lignum nephriticum) inwater and discussed theapplication of fireflies toilluminate houses.While experimentingwith silver chlorideat Jena University,Johann Wilhelm Ritter(1776-1810) discoveredthe ultraviolet end of thespectrum in 1801.In his “<strong>The</strong>ory of Colors”,Johann Wolfgang vonGoethe (1749-1832) alsodescribes fluorescent lightphenomenons. He asks hisreaders to “… dip a freshpiece of horse chestnutbark into a glass of water,which will then turnsky-blue immediately”.Athanasius KircherJohann Wilhelm Ritter1602 –1680 1776 –1810Johann Wolfgang v. Goethe1749 –1832Innovation 14, Carl Zeiss, 20045
Sir David Brewster(1781-1868), the inventorof the kaleidoscope,described the red radiationof chlorophyll in 1833.In 1845, Sir John FrederickWilliam Herschel(1792-1871) discoveredthe phenomenon offluorescence in a quininesolution.In 1842, Sir GeorgeGabriel Stokes(1819-1903) describedthe luminescence observedin the fluorspar mineral(calcium fluoride) asfluorescence.Sir David BrewsterSir John Frederick William HerschelSir George Gabriel Stokes1781 –1868 1792 –1871 1819 –19036Innovation 14, Carl Zeiss, 2004
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The Fluorescence Phenomenon

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