PBS
Planck's Constant and The Origin of Quantum Mechanics | Space Time | PBS Digital Studios
Planck's Length is the length below which the concept of length loses its meaning. What exactly does that mean and what are the incredible implications this fact has upon our reality? To find out check out this episode of Space Time...
PBS
What If Dark Energy is a New Quantum Field?
What is Quintessence? Well we know that something is up with the way the universe is expanding - there’s some kind of anti-gravitational effect that’s causing the expansion to accelerate. We don’t know what it is - just that it competes...
PBS
The Crisis in Cosmology
The search for a single number: the hubble constant, which is the rate of expansion of our universe, has consumed astronomers for generations. Finally, two powerful and independent methods have refined its measurement to unprecedented...
PBS
Are Dark Matter And Dark Energy The Same?
Astronomers are the worst at naming things. Dark energy AND dark matter? Who can remember which is which. But perhaps one astronomer has just fixed it, with a theory that says perhaps actually they are they same stuff.
PBS
Is Dark Energy Getting Stronger?
The power of Dark Energy may be increasing as the universe ages. Subtle clues are emerging that the accepted model for the nature of dark energy and dark matter may not be all that. We saw the first such clue recently in our recent...
PBS
Could the Universe End by Tearing Apart Every Atom?
The universe is expanding, and that expansion is accelerating. We don’t know what’s causing that acceleration, but that hasn’t stopped us from giving it a name. We call this unknown influence dark energy. The observed acceleration is,...
PBS
Why Is 1/137 One of the Greatest Unsolved Problems In Physics?
The Fine Structure Constant is one the strangest numbers in all of physics. It’s the job of physicists to worry about numbers, but there’s one number that physicists have stressed about more than any other. That number is 0.00729735256 -...
SciShow
Do I Only Use 10% of My Brain?
SciShow debunks the myth that you only use 10 percent of your brain. So, how much do you really use? And how do we know?
SciShow
A Kilogram Is Now a Kilogram—Forever | SciShow News
This week in SciShow News, there's a new kilogram in town, and we might be closer to understanding why people love coffee so much!
3Blue1Brown
But what is a Fourier series? From heat flow to circle drawings | DE4
Fourier series, from the heat equation to sines to cycles.
3Blue1Brown
What's so special about Euler's number e? Essence of Calculus - Part 5 of 11
What is the derivative of a^x? Why is e^x its own derivative? This video shows how to think about the rule for differentiating exponential functions.
3Blue1Brown
Feynman's Lost Lecture
This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”, for the full story behind this lecture,...
3Blue1Brown
But what is a Fourier series? From heat flow to circle drawings: Differential Equations - Part 4 0f 5
Fourier series, from the heat equation to sines to cycles.
3Blue1Brown
Derivatives of exponentials | Chapter 5, Essence of calculus
What is the derivative of a^x? Why is e^x its own derivative? This video shows how to think about the rule for differentiating exponential functions.
3Blue1Brown
Why do colliding blocks compute pi?
A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi
PBS
Anti-gravity and the True Nature of Dark Energy
We've come a long way in our understanding of dark energy. In previous episodes we've looked at how our universe is paradoxically flat and how dark energy is exponentially accelerating the expansion of the universe. Now, let's dive into...
PBS
Are the Fundamental Constants Changing?
The laws of physics are the same everywhere in the universe. At least we astrophysicists hope so. After all, it's hard to unravel the complexities of distant parts of the universe if we don't know the basic rules. But what if this is...
3Blue1Brown
So why do colliding blocks compute pi?
A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi
3Blue1Brown
So why do colliding blocks compute pi? Colliding Blocks - Part 2 of 3
A solution to the puzzle involving two blocks, sliding fricionlessly, where the number of collisions mysteriously computes pi
MinutePhysics
Feynman's Lost Lecture (ft. 3Blue1Brown)
Check out Grant’s channel: 3blue1brown. This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”,...
3Blue1Brown
The Brachistochrone, with Steven Strogatz: Brachistochrone - Part 1 of 2
A classic problem that Johann Bernoulli posed to famous mathematicians of his time, such as Newton, and how Bernoulli found an incredibly clever solution using properties of light.
3Blue1Brown
The Brachistochrone, with Steven Strogatz
A classic problem that Johann Bernoulli posed to famous mathematicians of his time, such as Newton, and how Bernoulli found an incredibly clever solution using properties of light.
3Blue1Brown
What DO we know about turbulence?
A look at what turbulence is (in fluid flow), and a result by Kolmogorov regarding the energy cascade of turbulence.
3Blue1Brown
Why 5/3 is a fundamental constant for turbulence
A look at what turbulence is (in fluid flow), and a result by Kolmogorov regarding the energy cascade of turbulence.