When1: 1904
When2: 1908
Who: Herta Ayrton [Ayrton, Herta] or Hertha Ayrton [Ayrton, Hertha] or Sarah Marks [Marks, Sarah]
What: physicist
Where: England
Detail: She lived 1854 to 1923 and determined that removing air from streetlamps and shaping arc ends prevented hissing in electric arcs, with William Edward Ayrton.
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Date Modified: 2022.0224