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New Results in Quantum Tunneling vs. The Speed of Light
Paradoxically, the most promising prospects for moving matter around faster than light may be to put a metaphorical brick wall in its way. New efforts in quantum tunneling - both theory and experiment - show that superluminal motion may...
PBS
Why Magnetic Monopoles SHOULD Exist
What happens if you cut a bar magnetic in half? We get two magnets, each with their own North and South poles. But what happens if you keep on cutting, into fourths and eighths and sixteenths and so on? Will we ever get to a single pole?...
PBS
The NEW Crisis in Cosmology
I have good news and bad news. Bad news first: two years ago we reported on the Crisis in Cosmology. Since then, it’s only gotten worse. And actually, the good news is also that the crisis in cosmology has actually gotten worse, which...
PBS
Navigating with Quantum Entanglement
We often think of quantum mechanics as only affecting only the smallest scales of reality, with classical reality taking over at some intermediate level. But in his 1944 book, What is Life?, the quantum physicist Erwin Schrödinger...
PBS
The Supernova At The End of Time
Good news everyone: it looks like the universe is going to end with a series of catastrophic explosions. The very, very long story short is that the universe ends in heat death, as it approaches maximum entropy, and its eternal...
PBS
Dissolving an Event Horizon
Black hole singularities break physics - fortunately, the universe seems to conspire to protect itself from their causality-destroying madness. At least, so says the cosmic censorship hypothesis. Only problem is many physicists think it...
PBS
Does Quantum Immortality Save Schrödinger's Cat?
To quote eminent scientist Tyler Durden: "On a long enough timeline, the survival rate for everyone drops to zero." Actually… not necessarily true. If the quantum multiverse is real there may be a version of you that lives...
PBS
Solving the Three Body Problem
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How To Capture Black Holes
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PBS
Why We Might Be Alone in the Universe
Why does it appear, that humanity is the lone intelligence in the universe? The answer might be that planet Earth is more unique than we've previously assumed. The rare earth hypothesis posits exactly this - that a range of factors made...
PBS
How To See Black Holes By Catching Neutrinos
Neutrinos are one of the most bizarre of known particles. Black holes are probably the most bizarre of astrophysical objects. Makes sense we should use one to study the other, no? Well, today we’re doing just that.<br/>
PBS
How Magnetism Shapes The Universe
How far can you follow a compass needle? As far as the north magnetic pole, where the needle starts spinning wildly? Compass needles align with magnetic field lines, and on the precise spot of magnetic north, those field lines are...
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Can We Break the Universe?
Today we’re going to delve into a couple of the most famous paradoxes of special relativity: the Twin Paradox, The Ladder Paradox (aka the Barn-Pole Paradox), and a paradox suggested by our very own viewers, which asks whether a...
PBS
How Does Gravity Escape A Black Hole?
Fact: in a black hole, all of the mass is concentrated at the singularity at the very center. Fact: every black hole singularity is surrounded by an event horizon. Nothing can escape from within the event horizon unless it can travel...
PBS
How To Simulate The Universe With DFT
If you used every particle in the observable universe to do a full quantum simulation, how big would that simulation be? At best a large molecule. That’s how insanely information dense the quantum wavefunction really is. And yet we...
PBS
Why String Theory is Right
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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What Survives Inside A Black Hole?
Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at...
PBS
Horizon Radiation
Learn about Horizon radiation and why it's essential for us to understand as we continue our journey towards the Unruh Effect and Hawking Radiation.
PBS
Quantum Gravity and the Hardest Problem in Physics
Between them, general relativity and quantum mechanics seem to describe all of observable reality.
PBS
The Geometry of Causality
Using geometry we can not only understand, but visualize how causality dictates the order of events in our universe.
PBS
The Phantom Singularity
Isaac Newton's Universal Law of Gravitation tells us that there is a singularity to be found within a black hole, but scientists and mathematicians have found a number of issues with Newton's equations. They don't always accurately...
PBS
The One-Electron Universe
Could it be that all the electrons in the universe are simply one, single electron moving back and forth through time?
PBS
The Nature of Nothing
It turns out that "nothing" is one of the most interesting somethings in all of physics.