Episode 51: Atoms To Quarks – The Mechanical Universe Electron waves attracted to the nucleus of an atom help account for the periodic table of the elements and ultimately lead to the search for quarks.
Episode 50: Particles And Waves – The Mechanical Universe Evidence that light can sometimes act like a particle leads to quantum mechanics, the new physics.
Episode 49: The Atom – The Mechanical Universe A history of the atom, from the ancient Greeks to the early 20th century, and a new challenge for the world of physics.
Episode 48: Low Temperatures – The Mechanical Universe With the quest for low temperatures came the discovery that all elements can exist in each of the basic states of matter.
Episode 47: Entropy – The Mechanical Universe The Carnot engine, part two, with profound implications for the behavior of matter and the flow of time through the universe.
Episode 46: Engine Of Nature – The Mechanical Universe The Carnot engine, part one, beginning with simple steam engines.