16
/
en
AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
73282
6735
2

dec 31, 1918 - Francis William Aston used a mass spectrograph to identify 212 isotopes

Added to timeline:

27 Sep 2017
0
0
179
Atomic Theory - Jessica Ashton
Chemistry Honors

Date:

dec 31, 1918
Now
~ 99 years ago
PayPal - The safer, easier way to pay online!logo
About & FeedbackTermsPrivacy