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Important Inventions In The Year 1919

Saturday, 07 September 2024

Francis Aston pioneers the mass spectrometer and uses it to discover many isotopes.

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May21 May17 Dec13 0542 1775 Jun25 

1954 Apr09 1873 Sep15 0988 

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1091 Jul16 Nov29 0350 Sep22 

1106 1580 Mar23 Jul22 1906 
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