John Dalton, who lived from 1766 to 1844, was a physicist, chemist, teacher, and public lecturer, most commonly known for his discoveries and theories pertaining to the atomic model. His studies mostly pertained to gasses. Throughout his studies, he also found the weight of hydrogen, oxygen, nitrogen, carbon, sulfur, and phosphorous.
Dalton's atomic theory stated that atoms made up everything and were indivisible. He also hypothesized that the ratios of elements were fixed at the atomic level. When he published his law, he named it "Dalton's Law."
J.J. Thompson was a Mathematician and Physicist, who lived from 1856 to 1940. He is most well known for his discovery of the electron. Another contribution to the atomic model was his discovery that atoms are not invisible, just too small to be viewed by the naked eye. He also determined that atoms are spherical, and positively charged.Aside from his contributions to the atomic model, there are several other accomplishments he achieved. He wrote 5 books: 1 about light, 1 about matter, 2 about electricity, and 1 was his autobiography. Apart from this, he gave 6 lectures at Yale, and was knighted for his accomplishments pertaining to the atomic model.
These men made major contribution to the understanding of the atoms, such as the indivisablity of them and even the discovery of the atom. I hope that you have learned more about the atomic model and found the article interesting. Thank you for reading.
