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  • Quantum Theory's Most Incredible Prediction | Space Time

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    Uploaded 15-08-18

    Let’s talk about the best evidence we have that the theories of quantum physics truly represent the underlying workings of reality.
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    Quantum field theory is notoriously complicated, built from mind-bendingly abstract mathematics. But are the underlying rules of reality really so far from human intuition? Or are physicists just showing off? For better or worse, the physicists are definitely on the right track. We know this because the predictions of quantum field theory stand up to experimental test time and time again.

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    Previous Episode:
    How Close To The Sun Can Humanity Get?
    https://www.youtube.com/watch?v=cOzaGEAGzzA&t=1s


    Hosted by Matt O'Dowd
    Written by Graeme Gossel and Matt O'Dowd
    Graphics by Luke Maroldi
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    سلطان الخليفي

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    20 min
  • Does the Planck Length Disrupt E=MC^2?
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    Every good nerd knows that E=mc^2. Every great nerd knows that, really, E^2=m^2c^4+p^2c^2 Want to know what that even means? Sure, I’ll tell you, but today I’d like to invite you to an even higher level of nerdom with extra bits to Einstein’s famous equation that will make even the greatest nerds quiver in their … space time merch if they turn out to be real.
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    Hosted by Matt O'Dowd
    Written by Christopher Pollack & Matt O'Dowd
    Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
    Directed by Andrew Kornhaber
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    Executive in Charge for PBS: Maribel Lopez
    Director of Programming for PBS: Gabrielle Ewing
    Assistant Director of Programming for PBS: John Campbell
    Spacetime is a production of Kornhaber Brown for PBS Digital Studios.
    This program is produced by Kornhaber Brown, which is solely responsible for its content.
    © 2024 PBS. All rights reserved.
    End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
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    24 min
  • 'Oumuamua Is Not Aliens

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    Uploaded 21-11-18

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    To repeat the space time maxim: it’s never aliens … until it is. So let’s talk about ‘oumuamua.


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    Previous Episode:
    Are Virtual Particles A New Layer of Reality?
    https://www.youtube.com/watch?v=ztFovwCaOik

    Hosted by Matt O'Dowd
    Written by Matt O'Dowd
    Graphics by Luke Maroldi
    Assistant Editing and Sound Design by Mike Petrow and Meah Denee Barrington
    Made by Kornhaber Brown (www.kornhaberbrown.com)

    Bialy and Loeb (2018)
    https://arxiv.org/pdf/1810.11490

    Micheli et al. (2018)
    https://go.nature.com/2A9FncQ

    Last year a visitor came to our inner solar system. To us it looked like a faint spot of light, moving quickly relative to the fixed stars. We’d seen similar things countless times before – lonely rocks, remnants from the formation of our solar system, drifting on their endless orbits around the sun and faintly glimmering with its reflected light. Nothing unusual about such asteroids and comets, but what made this object special was its trajectory. It was not in orbit around the Sun at all. Rather, it appeared to have fallen in from interstellar space, and was on its way back out again. The object is 1I/2017 U1, better known as ‘Oumuamua. It’s the first chunk of interstellar space debris we’ve ever spotted passing through our solar system. It caused a justifiable stir at the time. Hell, WE even did an episode on it.

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    21 min
  • Electrons DO NOT Spin

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    Uploaded 07-07-21

    Quantum mechanics has a lot of weird stuff - but there’s thing that everyone agrees that no one understands. I’m talking about quantum spin. Let’s find out how chasing this elusive little behavior of the electron led us to some of the deepest insights into the nature of the quantum world.

    Spin Renderings by the Incredible Jason Hise
    http://entropygames.net/

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    Directed by Andrew Kornhaber
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    21 min
  • Venus May Have Life!

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    ↓ More info below ↓

    Uploaded 05-10-20

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    If you rank the most habitable places in our solar system Venus lands pretty low, with surface temperatures hot enough to melt lead and sulphuric acid rain. And yet it may have just jumped to the front of the pack. In fact, we may have detected the signature of alien life - Venusian life -for the first time.

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    19 min
  • Is the Proxima System Our Best Hope For Another Earth?

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    Uploaded 08-03-22

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    At just four light years away, Proxima Centauri is our closest solar neighbor. The recent discovery of the new exoplanet Proxima D, has reopened the discussion of whether the proxima system is our best chance at reaching another Earth. How did we discover Proxima D? How do we know what the conditions are on planets so far away? Watch the episode to learn more.

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    26 min
  • What If the Galactic Habitable Zone LIMITS Intelligent Life?

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    Uploaded 18-05-22

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    Our solar system is a tiny bubble of habitability suspended in a vast universe that mostly wants to kill us. In fact, a good fraction of our own galaxy turns out to be utterly uninhabitable, even for sun—like stellar systems. Is this why .. most of us .. haven’t seen aliens?

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    Hosted by Matt O'Dowd
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    GFX Visualizations: Ajay Manuel
    Directed by Andrew Kornhaber
    Associate Producer: Bahar Gholipour
    Executive Producers: Eric Brown and Andrew Kornhaber
    Executives in Charge (PBS): Adam Dylewski, Maribel Lopez
    Director of Programming (PBS): Gabrielle Ewing

    Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
    This program is produced by Kornhaber Brown, which is solely responsible for its content.
    © 2022 PBS. All rights reserved.

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    18 min
  • What if Humans Are NOT Our Planet's First Civilization? | Silurian Hypothesis
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    We’re almost certainly the first technological civilization on Earth. But what if we’re not? We are. Although how sure are we, really? The Silurian hypothesis, which asks whether pre-human industrial civilizations might have existed.
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    24 min
  • Why String Theory is Right

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    Some see string theory as the one great hope for a theory of everything – that it will unite quantum mechanics and gravity and so unify all of physics into one glorious theory.

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    Why has string theory been the obsession of a generation of theoretical physicists? What exactly is so compelling about tiny, vibrating strings? In our last string theory episode I talked about what these things really are, and covered some history. In short: the strings of string theory are literal strands and loops that vibrate with standing waves. Simply by changing the vibrational mode you get different particles – analogous to how different vibrational modes on guitar strings gives different notes. And, by the way, strings exist in 6 compact spatial dimensions on top of the familiar 3.

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    20 min

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Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth with our astrophysicist host: Matthew O’Dowd.

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