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Author: Jean-Daniel Colladon (1802-1893). Source: This illustration appears in "La Nature" magazine in 1884 and it is reproduced in modern-day accounts of the history of fiber optics including Jeff Hecht's book Story of Fiber Optics and i-fiberoptics.comarchive copy at the
Wayback Machine. Collodon first described the system in an article in "Comptes Rendus" 1842, and described it again in 1884 in "La Nature". In the above illustration, water comes out of a short spout on the watertank and then falls through open air, as in a fountain. The device on the illustration's lefthand side produces light and directs a beam of light into the watertank. The demonstration of this "light fountain" needs to be done in a darkened room to see the effect.
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To delo je v javni domeni tudi v državah in na območjih, kjer trajajo avtorske pravice za časa avtorjevega življenja in še 70 let ali manj po tem.
V nekaterih državah trajajo avtorske pravice več kot 70 let: v Mehiki trajajo 100 let, na Jamajki 95 let, v Kolumbiji 80 let, v Gvatemali in na Samoi trajajo 75 let. Avtorske pravice se lahko podaljšajo na delih Francozov, ki so umrli za Francijo v drugi svetovni vojni (več o tem), Ruse, ki so služili na vzhodni fronti druge svetovne vojne (v Rusiji poznani kot velika domoljubna vojna) in posmrtno za rehabilitirane Ruse (več o tem).
Author: Jean-Daniel Colladon (1802-1893). Source: This illustration appears in ''"La Nature"'' magazine in 1884 and it is reproduced in modern-day accounts of the history of fiber optics including [http://books.google.fm/books?id=_G8B_lU_UHEC&pg=PA13&lpg
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{{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} Author: Jean-Daniel Colladon (1802-1893). Source: This illustration appears in ''"La Nature"'' magazine in 1884 and it is re