This week in the history of chemistry #11

Randy Holmes-Farley

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This week in the history of chemistry #11

Feb 1, 1905 Emilio Segrè was born. He codiscovered technetium (Tc, element 43) and astatine (At, 85); studied spontaneous fission and the antiproton; won the Nobel Prize in Physics in 1959

Feb 2, 1923 Leaded gas was first sold in the US in Dayton Ohio using tetraethyllead

Feb 4, 1915 Joseph Goldberger began the experiment that demonstrated that pellagra is a dietary disease

Feb 5, 1840 John Boyd Dunlop was born. He first manufactured pneumatic rubber tires

Feb 6, 1886. Clemens Winkler, in the course of analyzing a mineral, discovered the element germanium, Ge

Feb 7, 1905 Ulf Svante von Euler was born. He identified noradrenaline (norepinephrine) as a neurotransmitter; won Nobel Prize in medicine in 1970.
 

When to mix up fish meal: When was the last time you tried a different brand of food for your reef?

  • I regularly change the food that I feed to the tank.

    Votes: 22 29.7%
  • I occasionally change the food that I feed to the tank.

    Votes: 27 36.5%
  • I rarely change the food that I feed to the tank.

    Votes: 19 25.7%
  • I never change the food that I feed to the tank.

    Votes: 5 6.8%
  • Other.

    Votes: 1 1.4%
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