welll...
the atome was dicovered in
400 bc
then again in 1803
then again in1905
then again in 1907
and now today
yourwelcome (y)
1896
1825
Clyde Tombaugh
1982 val
Potassium was discovered in 1807.
Christoff Rudolff
8th century
someone in japan
Professer kin etic
January 24, 1848
Galileo Galilei
When the first man was able to look down at the ground