String Theory Says There Are 11 Dimensions — Where Are They? | Michio Kaku
Reality Unbounded
1,432 views
String Theory Says There Are 11 Dimensions — Where Are They? | Michio Kaku. The room you're sitting in has eleven dimensions — at least according to string theory, the deepest mathematical framework physics has ever built. But no human being has ever seen more than four. So where are the other seven hiding?
In this video, Michio Kaku walks you through the real story of the hidden dimensions, from the 1919 letter in which Theodor Kaluza proposed a fifth dimension of space to Albert Einstein, to Oskar Klein's curled-up circle, to Edward Witten's 1995 M-theory breakthrough that unified five rival string theories into a single eleven-dimensional framework.
You'll discover the three hiding places physics has proposed for the missing dimensions: six dimensions curled into Calabi-Yau shapes at the Planck length, a hundred billion billion times smaller than a proton, quietly deciding the masses of particles and the strengths of forces; large extra dimensions open only to gravity, hunted by torsion-balance experiments at the University of Washington down to fifty micrometers; and the braneworld of Lisa Randall and Raman Sundrum, where our entire universe is a three-dimensional membrane floating in a higher-dimensional bulk, with other universes possibly less than a millimeter away. You'll also learn why gravity is absurdly weak, how the Large Hadron Collider at CERN listened for Kaluza-Klein particles — heavier overtones of familiar particles that would sing the presence of hidden dimensions — and why the silence of those searches matters just as much as a discovery would.
This is the honest scorecard: what string theory and M-theory predict, what experiments have actually found, and what it would take to catch a hidden dimension. If you've ever wondered how many dimensions the universe really has, where extra dimensions could be hiding, or what a theory of everything would actually explain, watch to the end.
What's your bet — are the missing dimensions real, or beautiful math with no address in nature? Tell me in the comments, and subscribe for more physics explained the way it deserves.
#StringTheory #11Dimensions #MichioKaku #ExtraDimensions #MTheory #HiddenDimensions #Physics #QuantumPhysics #TheoryOfEverything #CalabiYau #Braneworld #LargeHadronCollider
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String Theory Says There Are 11 Dimensions — Where Are They? | Michio Kaku
Reality Unbounded
1,432 views
String Theory Says There Are 11 Dimensions — Where Are They? | Michio Kaku. The room you're sitting in has eleven dimensions — at least according to string theory, the deepest mathematical framework physics has ever built. But no human being has ever seen more than four. So where are the other seven hiding?
In this video, Michio Kaku walks you through the real story of the hidden dimensions, from the 1919 letter in which Theodor Kaluza proposed a fifth dimension of space to Albert Einstein, to Oskar Klein's curled-up circle, to Edward Witten's 1995 M-theory breakthrough that unified five rival string theories into a single eleven-dimensional framework.
You'll discover the three hiding places physics has proposed for the missing dimensions: six dimensions curled into Calabi-Yau shapes at the Planck length, a hundred billion billion times smaller than a proton, quietly deciding the masses of particles and the strengths of forces; large extra dimensions open only to gravity, hunted by torsion-balance experiments at the University of Washington down to fifty micrometers; and the braneworld of Lisa Randall and Raman Sundrum, where our entire universe is a three-dimensional membrane floating in a higher-dimensional bulk, with other universes possibly less than a millimeter away. You'll also learn why gravity is absurdly weak, how the Large Hadron Collider at CERN listened for Kaluza-Klein particles — heavier overtones of familiar particles that would sing the presence of hidden dimensions — and why the silence of those searches matters just as much as a discovery would.
This is the honest scorecard: what string theory and M-theory predict, what experiments have actually found, and what it would take to catch a hidden dimension. If you've ever wondered how many dimensions the universe really has, where extra dimensions could be hiding, or what a theory of everything would actually explain, watch to the end.
What's your bet — are the missing dimensions real, or beautiful math with no address in nature? Tell me in the comments, and subscribe for more physics explained the way it deserves.
#StringTheory #11Dimensions #MichioKaku #ExtraDimensions #MTheory #HiddenDimensions #Physics #QuantumPhysics #TheoryOfEverything #CalabiYau #Braneworld #LargeHadronCollider