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Around 4000 BCE, Democritus first proposed that every thing in the world was made up of tiny particles surrounded by empty space, he even speculated that they vary in size and shape. He called them "Atomos," a Greek word which means indivisible. Although Aristotle disagreed and stated that " matter is made up of four elements, earth, wind, water and fire." At that time he was more popular so some scientists believed in him.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.