Modern Atomic Discoveries

Dalton's groundbreaking work in the early 19th century established that elements react in precise ratios due to unique atomic structures, laying the foundation for modern atomic theory. Meanwhile, Brown's observation of erratic dust movement in water provided further evidence of atomic interactions, later explained by Einstein as the result of molecular collisions, challenging the notion of continuous matter. These insights collectively reinforced the understanding that matter is composed of discrete atoms, marking a pivotal moment in scientific history.