50.1 MB (6.1 MB compressed)
4806 x 3643 pixels
40.6 x 30.7 cm ⏐ 16.0 x 12.1 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Light fountain experiment. 19th-century illustration of the light fountain invented by Swiss physicist Jean-Daniel Colladon (1802-1893). This invention is recreated using a lamp, a reflector, a spherical glass and a water box. The light is trapped in the water jet (left) by total internal reflection, the principle used in fibre optics. This illustration, part of a section titled 'Experiences de Physique sans Appareils' (illustrating popular physics experiments that don't require the use of laboratory equipment), is from 'Physique Populaire' (Emile Desbeaux, 1891).
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