How Albert Einstein thought he'd found the fatal flaw in quantum theory because it implies that sub-atomic particles can communicate faster than light.
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How Albert Einstein thought he'd found the fatal flaw in quantum theory because it implies that sub-atomic particles can communicate faster than light.
Physicist Jim Al-Khalili routinely deals with the strangest subject in all of science - quantum physics, the astonishing and perplexing theory of sub-atomic particles. But now he's turning his attention to the world of nature. Can quantum mechanics explain the greatest mysteries in biology?
Witness the ingenuity and bravery of the pioneers who developed, built, and even risked their lives testing the ejection seat.
S1E3 • Survival in the Skies • 2019 • Physics
Meet the innovators who developed newer, safer ways to fall from the sky and those whose lives were saved by them
S1E2 • Survival in the Skies • 2019 • Physics
The classical physics that we encounter in our everyday, macroscopic world is very different from the quantum physics that governs systems on a much smaller scale (like atoms).
When you think about Einstein and physics, E=mc^2 is probably the first thing that comes to mind. But one of his greatest contributions to the field actually came in the form of an odd philosophical footnote in a 1935 paper he co-wrote -- which ended up being wrong.
Light always travels at a speed of 299,792,458 meters per second. But if you're in motion too, you're going to perceive it as traveling even faster -- which isn't possible! In this second installment of a three-part series on space-time, CERN scientists Andrew Pontzen and Tom Whyntie use a space-time diagram to analyze the sometimes confounding motion of light.
In the first episode, Helen seeks out the colours that turned planet Earth multicoloured. To investigate the essence of sunlight Helen travels to California to visit the largest solar telescope in the world. She discovers how the most vivid blue is formed from sulfur atoms deep within the Earth's crust and why the presence of red ochre is a key sign of life. In gold, she discovers why this most precious of metals shouldn't even exist on the surface of the planet and in white, Helen travels to one of the hottest places on Earth to explore the role salt and water played in shaping planet Earth.
S1E1 • Colour: The Spectrum of Science • 2015 • Physics