30
/ru/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
June 15, 2024
75971
6442
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
Создать
Close
Create a timeline
Public timelines
Library
FAQ
16 фев 1919 г. - Aston (1919)- discovered the existence of isotopes through the use of spectrograph
Добавлено на ленту времени:
Chem Project
By
Alyssa George
27 сен 2017
0
0
536
Дата:
16 фев 1919 г.
Сейчас
~ 105 г назад
About & Feedback
Соглашение
Приватность
Библиотека
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