41
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
May 31, 2026
80045
7345
2
Public Timelines
FAQ

sep 23, 1803 - John Dalton proposed the modern Atomic Theory. John Dalton used previous laws, including Lavoisier's Law of Conservation of Mass.

Added to timeline:

28 Sep 2017
0
0
748

Date:

sep 23, 1803
Now
~ 222 years ago

Images: