-440 โถ Democritus Proposes Atomic Theory
Democritus proposes the existence of indivisible particles, ...Year
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โ๏ธ Democritus Proposes Atomic Theory
Democritus proposes the existence of indivisible particles, which he calls atoms.โถ

Ancient greecePhilosophyAtomic TheoryNatural PhilosophyPhysicsIdeas

๐ Anaxagoras' Attempt to Square the Circle
Anaxagoras tries to square the circle with a straightedge and compass.โถ
Ancient greecePhilosophyMathematicsGeometryMeasurement

๐๏ธ Athens Adopts Metonic Cycle for Calendar Synchronization
Athens adopts a 19-year cycle of synchronizing solar and lunar calendars.โถ

Ancient greeceCalendarsAstronomyTimekeeping

๐งช Empedocles Proposes Theory of Four Humors
The Greek physician and philosopher Empedocles articulates the notion that the human body has four humors: blood, bile, black bile, and phlegm, a belief that dominates medical thinking for centuries.โถ

Ancient greecePhilosophyMedicineAncient World

โ๏ธ Thessalos Distinguishes Chronic and Acute Illnesses
The distinction between chronic maladies and acute illnesses is made by Thessalos.โถ
Ancient greeceRoman EmpireMedicineMedical HistoryDiseaseHealth
