Famous Physicists

Quantum Mechanics/Quantum Physics

Energy in Physics

Applied Physics

Black Holes, Tides, and Curved Spacetime

It's About Time

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444 Videos in Physics


History's Mysteries
Episode 1 of The Inexplicable Universe
Begin this journey by taking a closer look at concepts that were once unexplainable but are now better understood. You'll focus on two such former mysteries: the existence of an invisible "aether" through which light and sound were believed to…
Tesla - Master of Lightning
This program recounts the life of scientist, inventor, and visionary Nikola Tesla, often remembered as more of an eccentric cult figure than an electrical engineering genius. Many of his achievements are still attributed to contemporaries Thomas Edison and Guglielmo Marconi.…
A Brief History of Time
Part of the Series: Janus Favorites Collection
Errol Morris turns his camera on one of the most fascinating men in the world: the pioneering astrophysicist Stephen Hawking, afflicted by a debilitating motor neuron disease that has left him without a voice or the use of his limbs.…
The Spooky Universe
Episode 2 of The Inexplicable Universe
Did you know that electrons have never actually been observed by scientists to this day? Or that quarks can only be studied in pairs? Or that as you travel faster or find yourself in a higher gravity, time ticks more…
I Dream of Wires
I Dream of Wires is a documentary about the rise, fall and rebirth of the machine that shaped electronic music: the modular synthesizer. The film explores the synthesizer's remarkable history, revealing how innovators like Robert Moog, working at Columbia University's…
Inexplicable Physics
Episode 4 of The Inexplicable Universe
Turn now to some inexplicable aspects of physics and our physical world. Among the many eye-opening topics you'll learn about in this episode are the discovery of more and more elements on the periodic table; muon neutrinos, tao particles, and…
Inexplicable Life
Episode 3 of The Inexplicable Universe
Join Professor Tyson on a fascinating investigation of the possible origins of life in the universe. Why was Jupiter believed to be a good environment for life in the 17th century? Why is there only one single "tree of life"…
Energy and Human Civilization
Episode 1 of The Science of Energy
How much energy is required to power human civilization? What is it that makes our cities, factories, homes, and cars so energy inefficient? How can the average individual affect energy directions? Find out in this overview of how energy touches…
Inexplicable Space
Episode 5 of The Inexplicable Universe
Shoot off into the stars for an investigation of some perplexing aspects of space that science has uncovered in the last half-century. Learn about the mysterious trajectory of the Pioneer spacecraft (known as the "Pioneer anomaly"). Explore two of the…
Inexplicable Cosmology
Episode 6 of The Inexplicable Universe
Brace yourself for a fascinating trip through dimensions higher than our own. You'll discover how quantum physics and string theory have opened our eyes to the possibilities of quantum foam, the multiverse, and antimatter. Join Professor Tyson for a preview…
Out of Thin Air
Part of the Series: The Mystery of Matter
One of science's great odd couples--British minister Joseph Priestley and French tax administrator Antoine Lavoisier--together discover a fantastic new gas called oxygen, overturning the reigning theory of chemistry and triggering a worldwide search for new elements. Soon caught up in…
Metaphysics and the Nature of Science
Episode 1 of Redefining Reality
Start with the metaphysical concept of reality and how it led to a scientific worldview. Then see how the scientific picture of reality changes as theories are refined or overthrown. Explore examples such as the germ theory of disease and…
Light and Time - The Special Theory of Relativity
Part of the Series: The Physics of Light
While the terms "quantum physics" and "Theory of Relativity" are used casually every day, not many people know what they really mean. Yet these theories have had a profound impact not only on science and technology, but also on our…
The End of Time
Peter Mettler's enthralling, mind-bending new documentary is a tour de force that challenges our conception of time - and perhaps the very fabric of our existence. With stunning cinematography and a knack for capturing astonishing moments, The End of Time…
The Transformability of Information
Episode 1 of The Science of Information
What is information? Explore the surprising answer of American mathematician Claude Shannon, who concluded that information is the ability to distinguish reliably among possible alternatives. Consider why this idea was so revolutionary, and see how it led to the concept…
Chemical Energy, Biomass, and Photosynthesis
Episode 5 of The Science of Energy
Turn now to chemical energy, the potential energy resulting from the position of atoms within molecules. After an overview of photosynthesis (perhaps the universe's most amazing form of energy conversion), learn how combustion transforms biofuels into light and heat, and…
Energy - Forms and Conversion for Use
Episode 2 of The Science of Energy
Energy is a fundamental part of our universe--in a sense, the universe is energy. Here, Professor Wysession introduces you to the many fascinating forms energy takes, including potential, kinetic, mechanical, and thermal energy. He also explains how energy is measured…
We can't directly see the forces that govern Earth, but we can see their shadows in the shapes of nature that surround us. If we understand why these shapes exist, we can understand the rules that bind the entire universe.
Electricity - Ultimate Energy Converter
Episode 4 of The Science of Energy
Discover what makes electricity such an attractive vehicle for energy. Learn how electricity can come from oil, coal, solar, and other forces, and how electricity travels through wires with the help of voltage. Also, examine recent advances that make it…
Computation and Logic Gates
Episode 2 of The Science of Information
Accompany the young Claude Shannon to the Massachusetts Institute of Technology, where in 1937 he submitted a master's thesis proving that Boolean algebra could be used to simplify the unwieldy analog computing devices of the day. Drawing on Shannon's ideas,…