It consists of two rotating disks with holes in them. The holes are arranged on each disk at equal angular intervals and a constant distance from the centre, but the holes in one disk do not align with the holes in the other. A sample of phosphorescent material is placed in between the two disks. Light coming in through a hole in one of the discs excites the phosphorescent material which then emits light for a short amount of time. The disks are then rotated and by changing their speed, the length of time the material glows can be determined.
Referencesedit
^"Natural Philosophy Collection. Bequerel's [sic] Phosphoroscope". University of Aberdeen. Retrieved 2014-12-16.
External linksedit
Description and image of a phosphoroscope at the Kenyon College Department of Physics
Wikimedia Commons has media related to Phosphoroscope.
phosphoroscope, phosphoroscope, piece, experimental, equipment, devised, 1857, physicist, becquerel, measure, long, takes, phosphorescent, material, stop, glowing, after, been, excited, becquerel, phosphoroscope, 1873, 1874, consists, rotating, disks, with, ho. A phosphoroscope is piece of experimental equipment devised in 1857 by physicist A E Becquerel to measure how long it takes a phosphorescent material to stop glowing after it has been excited 1 The Becquerel phosphoroscope 1873 1874 It consists of two rotating disks with holes in them The holes are arranged on each disk at equal angular intervals and a constant distance from the centre but the holes in one disk do not align with the holes in the other A sample of phosphorescent material is placed in between the two disks Light coming in through a hole in one of the discs excites the phosphorescent material which then emits light for a short amount of time The disks are then rotated and by changing their speed the length of time the material glows can be determined References edit Natural Philosophy Collection Bequerel s sic Phosphoroscope University of Aberdeen Retrieved 2014 12 16 External links editDescription and image of a phosphoroscope at the Kenyon College Department of Physics nbsp Wikimedia Commons has media related to Phosphoroscope nbsp This atomic molecular and optical physics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Phosphoroscope amp oldid 1100204720, wikipedia, wiki, book, books, library,
