33
/it/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
73282
6735
2
Create a timeline
Public Timelines
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
FAQ
Ricevere il Premium
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Accordo
Privatezza
FAQ
Support 24/7
Cabinet
Get premium
Donate
31 dic 1918 anni - Francis William Aston used a mass spectrograph to identify 212 isotopes
Aggiunto al nastro di tempo:
Atomic Theory - Jessica Ashton
By
Jess Ashton
27 set 2017
0
0
1232
Data:
31 dic 1918 anni
Adesso
~ 106 years ago
About & Feedback
Accordo
Privatezza
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
