PBS
Are Cosmic Strings Cracks in the Universe?
Reality has cracks in it. Universe-spanning filaments of ancient Big Bang energy, formed from topological defects in the quantum fields, aka cosmic strings. They have subatomic thickness but prodigious mass and they lash through space at...
PBS
Does Time Cause Gravity?
We know that gravity must cause clocks to run slow on the basis of logical consistency. And we know that gravity DOES cause clocks to run slow based on many brilliant experiments. But I never explained WHY or HOW gravity causes the flow...
PBS
The Real Science of the EHT Black Hole
So, how do you take a picture of a black hole? The beast in question is the supermassive black hole in the center of this – the M87 elliptical galaxy. It has an estimated mass of several billion times that of the Sun, which gives it an...
PBS
Why Quantum Computing Requires Quantum Cryptography
Quantum computing is cool, but you know what would be extra awesome - a quantum internet. In fact if we want the first we’ll need the latter. And the first step to the quantum internet is quantum cryptography.
TED Talks
TED: Will superintelligent AI end the world? | Eliezer Yudkowsky
Decision theorist Eliezer Yudkowsky has a simple message: superintelligent AI could probably kill us all. So the question becomes: Is it possible to build powerful artificial minds that are obedient, even benevolent? In a fiery talk,...
SciShow
This Squid Glows… To Make Itself Invisible
When you live in the ocean, it can be hard to find ways to keep hidden from predators, or from your own prey. But these three animals have found clever ways to stay hidden, by using light to their advantage. One of them even /makes...
MinutePhysics
Another Portal Paradox
What happens if you extend a piston through a portal? Or try to sandwich a cube between two portals? That's right, it's time to explore more portal paradoxes!
MinutePhysics
Why is it Harder to Drive Backwards?
One Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in one minute!
MinutePhysics
Most Collisions Are Secretly in One Dimension
This video is about elastic and inelastic collisions in 1D, 2D and 3D - and how the collision of conservation of energy with conservation of momentum, plus a secret direction, results in a completely predetermined behavior for most...
SciShow
7 Myths About Movement
Bumblebees fly, lights turn on, and you can ride a bike without falling over. We all know these things to be true, but what you may not know is the real reason behind why they work. Join Olivia to bust seven myths about motion.
SciShow
Wildfires Make Their Own Weather, Including...
Climate change is causing wildfire season to get worse every year. And our models of wildfires can't keep up with the things fires can do... like spawn devastating fire tornadoes.
SciShow
What is Wind?
We all know that warm air rises, but how does this scientific fact influence our weather and create those flows of air molecules that we know of as wind? In this episode of SciShow, Hank explains where wind comes from, what factors...
SciShow
What Do Magnetic Fields Actually Do? | SciShow Compilation
So what exactly do magnetic fields actually do? What would happen if they went away? Turns out, it could be catastrophic! SciShow will explain it all in this fun new episode hosted by Michael Aranda!
SciShow
8 Mind-Blowing Optical Illusions
Your brain does its best to inform you about the world around you, but sometimes it gets tricked. Enjoy eight optical illusions to test your brain’s sensory input.
SciShow
Why the Weak Nuclear Force Ruins Everything
The weak force has been causing trouble for a century, ruining everything physicists thought was true. But it might actually be responsible for your very existence.
TED Talks
TED: How wireless energy from space could power everything | Ali Hajimiri
Modern life runs on wireless technology. What if the energy powering our devices could also be transmitted without wires? Electrical engineer Ali Hajimiri explains the principles behind wireless energy transfer and shares his far-out...
Crash Course
Futurism and Constructivism: Crash Course Theater #39
It's time to go Back...to the Future. By which I mean, we're going back into the past to talk about Futurism. Which seems like it would be cool, but it was started by this terrible guy Martinetti, who also wrote the Italian Fascist...
Associated Press
FEMA: Texas floods "a landmark event
The director of the US Federal Emergency Management Agency on Monday called on the people of Texas and Louisiana to "be involved" as the states struggle with the devastating impact of Tropical Storm Harvey. Speaking at FEMA's...
3Blue1Brown
A quick trick for computing eigenvalues | Essence of linear algebra, chapter 15
A quick way to compute eigenvalues of a 2x2 matrix
3Blue1Brown
Cross products in the light of linear transformations | Essence of linear algebra chapter 11
The formula for the cross product can feel like a mystery, or some kind of crazy coincidence. But it isn't. There is a fundamental connection between the cross product and determinants.
3Blue1Brown
Three-dimensional linear transformations: Essence of Linear Algebra - Part 5 of 15
How to think of 3x3 matrices as transforming 3d space
TED Talks
What physics taught me about marketing - Dan Cobley
* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Physics and marketing don't seem to have much in common, but Dan Cobley is passionate about both. He brings these...
MinutePhysics
Bell's Theorem: The Quantum Venn Diagram Paradox
This video discusses how polarized sunglasses act as quantum measurement devices by demonstrating the strange behavior of light passing through multiple filters. It delves into the concept of quantum entanglement, Bell's theorem, and the...
MinutePhysics
Do Cause and Effect Really Exist? (Big Picture Ep. 2/5)
Thanks to Google Making and Science for supporting this series, and to Sean Carroll for collaborating on it! This video is about why there's no such thing as cause and effect at the level of fundamental particle physics, and how our...