Science Birthdays, June 17


Today is the birthday of Francois Jacob, born in 1920, together with Jacques Monod, he said the control of enzyme levels in all cells occurs through feedback on  transcription.

6/17/1800        William Rosse,           astronomer, he died in 1867 at age 67.

6/17/1832        Sir William Crookes,   physicist, pioneer inventor of vacuum tubes, he invented the Crookes Tube. He also invented the Crookes radiometer which we probably all had at one time. he died in 1919 at age 86.


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