-
Invented an atomic theory
-
Discovered electrons
-
Discovered protons
-
Looked into atoms and their structure
-
Created a modern day perdoic table. He also created atomic numbers for each individual element.
-
Invented the mass spectrometer
-
Discovered the quark
-
Proved the existance of neutrons
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.