What is the X in X-mas?

Geiger, Johannes Wilhelm

German physicist who introduced the first successful detector (the Geiger counter) of individual alpha particles and other ionizing radiations.

Learn more about Geiger, Johannes Wilhelm with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Word Value for geiger,

Scrabble Words With Friends

Nearby words for geiger, johannes wilhelm