Ancient Greeks debated atomic theory 2,400 years ago
Ancient Greek philosophers proposed an atomic theory around 400 BC, envisioning tiny, indivisible particles as matter's building blocks, remarkably anticipating modern science by over two millennia.
Long before modern science, ancient Greek philosophers like Leucippus and Democritus proposed an atomic theory around 400 BC. They believed everything was made of tiny, indivisible particles called atoms, surrounded by empty space. These atoms differed in shape and size, explaining the diversity of all matter.
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