aug 30, 1897 - J.J Thomson discovered the electrons and subatomic particles.
Description:
Thompson atomic model demonstrates that the atom can be divided into subatomic particles, these particles were negatively charged and were called electrons. These electrons were distributed among a positively charged "soup." This atomic model is known as the "Plum Pudding Model." His experiment was called the "Cathode Ray Tube."Added to timeline:
Date:
aug 30, 1897
Now
~ 128 years ago