Summary: Physics 2D LecturePhysics 2D Lecture
April 27th 2009p
Historical DebateHistorical Debate
· The "Atomists" (Democritus, Leucippus, Epicurus, et. al.) -
Matter consists ultimately of "indivisible"
particles called "atomos" that cannot be further subdivided orparticles called atomos that cannot be further subdivided or
· Aristotle - Matter is continuous, infinitely divisible, and is
composed of only 4 elements:
Earth, Air, Fire, and Water
University of Iowa
May 20, 2009
Modern IdeasModern Ideas
· Newton noted "Boyle's law of gases could be
explained if the a gas consisted of particles "explained if the a gas consisted of particles.
· Daniel Bernoulli noted "gases are composed of small· Daniel Bernoulli noted gases are composed of small,
atom-like particles in random motion."