33
/fr/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
3491954
317205
2
Create a timeline
Public Timelines
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
FAQ Obtenir le Premium
Create a timeline
Public timelines
FAQ
About & FeedbackUn accordConfidentialitéFAQ
Support 24/7  
CabinetGet premium
Donate

1 janv. 1914 - In 1914 T. W. Richards found variations between the atomic weight of lead from different mineral sources, attributable to variations in isotopic composition due to different radioactive origins

Ajouté au bande de temps:

History of isotopes

ByJack
6 nov. 2019
0
0
284

Date:

1 janv. 1914
Maintenaint
~ Il y a 111 ans
About & FeedbackUn accordConfidentialitéFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL