33
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 30, 2025
251508
22117
2
Create a timeline
Public Timelines
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
FAQ
Create a timeline
Public timelines
FAQ
About & FeedbackTermsPrivacyFAQ
Support 24/7  
CabinetGet premium
Donate

jan 1, 1900 - Max Planck

Description:

He made the assumption that energy was made of individual units, or quanta. Planck also indicates that it is impossible that two electrons have the same quantic numbers in an atom.

Added to timeline:

Chemistry events timeline

ByMaria
10 Nov 2017
0
0
941

Date:

jan 1, 1900
Now
~ 125 years ago

Images:

About & FeedbackTermsPrivacyFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL