dec 31, 1893 - JJ Thomson
Description:
he studied cathode rays, devised better equiptment method, determined all matter is made of particles smaller than atoms. Came up with the theory that the atom was the smallest fundemental unit.http://www.abcte.org/files/previews/chemistry/s1_p5.html
Added to timeline:
Date:
dec 31, 1893
Now
~ 132 years ago