30
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
723786
61507
2
Public Timelines
FAQ
Menu
Public Timelines
FAQ
Public Timelines
FAQ
For education
For educational institutions
For teachers
For students
Open cabinet
For educational institutions
For teachers
For students
Open cabinet
Create
Close
Create a timeline
Public timelines
Library
FAQ
7h 25min, jan 2, 1919 y - Francis Aston pioneers the mass spectrometer and uses it to discover many isotopes
Added to timeline:
20th Century
By
Rafelle Marie Timog Allego
10 Feb 2018
0
0
651
Date:
7h 25min, jan 2, 1919 y
Now
~ 105 years ago
About & Feedback
Terms
Privacy
Library
2024
©
Time.Graphics
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
Excellent (Trustpilot Reviews)
Based on 115+ reviews
Write your own review on
Trustpilot.com