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3h 26min, jan 29, 1909 y - studied protons in the periodic table
Description:
http://freedomtoteach.collins.co.uk/chemistry-in-1913-part-1-henry-moseley-and-atomic-number/
Added to timeline:
henry moseley timeline
By
STUDENT Quincy Jackson
1 Dec 2017
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Date:
3h 26min, jan 29, 1909 y
Now
~ 117 years ago
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