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?
Visiting a hidden location buried beneath the hills of Scotland, Helen experiences some of the most extreme acoustics in the world. Here she learns just how much information can be carried by sound. She discovers how sound has driven the evolution of truly incredible biological systems and complex relationships between creatures that exploit sound for hunting - and escaping from predators. Helen demonstrates how sound waves diffract (bend around objects) and in doing so help us sense danger and locate it. Helen explains how we are not limited to passively detecting sound waves; we can also use them to actively probe the world.
S1E2 • Sound Waves: The Symphony of Physics • 2017 • Physics
What does quantum mechanics tell us about our world -- or are there many worlds due to probability waves? How does the general theory of relativity mesh with quantum mechanics? If you've wished you understood quantum mechanics (or at least grasped the basics) physicist Brian Greene can help!
S1E1 • Curiosity Retreats: 2015 Lectures • 2015 • Physics
This is an astonishing tale of perseverance and ingenuity that reveals how scientists have battled against the odds for almost a century to detect and decode the neutrino, the smallest and strangest particle of matter in the universe. Inside the world-renowned physics laboratory Fermilab, a team of scientists are constructing an audacious experiment to hunt for a mysterious new 'ghost' neutrino. If they find it, this could transform our understanding of the nature and fabric of our universe. The problem is, these tiny particles are almost impossible to detect. Elsewhere, physicists conduct experiments in some of the most extreme environments on the planet: from deep mine shafts in South Dakota to vast ice fields at the South Pole. In these unlikely places supersized neutrino detectors hope to unlock the universe's deepest secrets. Could neutrinos overturn the most precise theory of particle physics that humans have ever written down? Could they even be a link to a hidden realm of new particles that permeate the cosmos - so called dark matter? Scientists at Fermilab are edging towards the truth.
2021 • Physics
One of the most amazing facts in physics is that everything in the universe, from light to electrons to atoms, behaves like both a particle and a wave at the same time. But how did physicists arrive at this mind-boggling conclusion?
Planet Earth shrinks to half size causing altitude sickness and a cosmic disaster, the sun gets as small as a sun can be, turning Earth into a frozen mud ball. We also see what happens to a man who shrinks to the same size as a wasp.
S1E2 • Size Matters • 2019 • Physics
Hurtling back in time to visit the dinosaurs is not an impossible fantasy! Dr Michio Kaku draws up blueprints for a working time machine that will let us visit the past and travel back to the future.
S1E6 • Physics of the Impossible • 2009 • Physics