1878 in science
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The year 1878 in science and technology involved many significant events, listed below.
August – Cleopatra's Needle (horizontal) being raised in London.
William Crookes
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Sir William Crookes was an English chemist and physicist who attended the Royal College of Chemistry, now part of Imperial College London, and worked on spectroscopy. He was a pioneer of vacuum tubes,
1878 in science
…December 31 – Karl Benz produces a two-stroke gas engine. William Crookes invents the Crookes tube which produces cathode rays. Osbourn Dorsey obtains a patent in the United States for a "door-holding device…
Crookes in 1906
Blue plaque, 7 Kensington Park Gardens, London
The element thallium, discovered by Crookes
The mineral crookesite, a selenide of copper, thallium and silver (Cu 7(Tl, Ag)Se 4), named for Crookes