Famous Lichtenberg Figure/Tree of Fire (ca. 1960) |
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The small (ca. 1”x1”) piece of lead-cerium glass pictured on the right was charged by exposing it for 20 seconds to a 10µA current of 1.5 MeV electrons from an accelerator at Oak Ridge National Laboratory. When the block of glass was discharged, a time-lapse photograph was taken of the “tree of fire.” The photograph was so striking that it was used on
the cover of the Kindly donated by Phil Rudolph |
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