33
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
3741445
342641
2
Public Timelines
FAQ Get premium

dec 13, 1912 - Negative - Doesn't work for heavier elements

Added to timeline:

Date:

dec 13, 1912
Now
~ 112 years ago