1803: __English chemist-physicist John Dalton starts using symbols to represent the atoms of different elements. Dalton, considered the father of modern atomic theory, made a logbook entry that ...

USE OF SYMBOLS FOR THE FIRST TIME On September 3, 1803, Dalton made an entry in his logbook titled "Observations on the Ultimate Particles of Bodies and their Combinations," marking the first use ...

They must consist of discrete particles. From this simple premise Dalton devised his groundbreaking atomic theory in 1803, the nub of which proposed the idea that all matter is made of atoms.

Professor Kroto, famed for his co-discovery of carbon "buckyballs", will deliver a Royal Society of Chemistry lecture in honour of Dalton this week. It is just one of a series of events being held in ...

From 1793, John Dalton made a living teaching mathematics and philosophy in the booming industrial town of Manchester, in the north of England. In 1803, he presented to the Manchester Literary and ...

Dalton put forward his theory in 1803 and gave a full account of it to Thomson in 1804, and what Davy said in 1809 seems irrelevant.

Dalton's greatest achievement was his Atomic Theory published in 1803, which established the principles that determine the composition of all materials. Atomic Theory marked the end of alchemy and ...