PBS
Can a Circle Be a Straight Line?
On this week's episode of Spacetime, Gabe talks about what it actually means for a line to be straight so we can better understand what we mean by the idea of "curved Spacetime". This is Part One of our series on General relativity, so...
SciShow
How Far Will People Go to Fit In?
Have you ever gone along with a group even though you had your doubts? You're not alone: Research shows unanimous decisions aren't always actually unanimous.
TED-Ed
TED-Ed: The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie
Space is where things happen. Time is when things happen. And sometimes, in order to really look at the universe, you need to take those two concepts and mash them together. In this first lesson of a three-part series on space-time,...
3Blue1Brown
The other way to visualize derivatives
A visual for derivatives which generalizes more nicely to topics beyond calculus. Thinking of a function as a transformation, the derivative measure how much that function locally stretches or squishes a given region.
3Blue1Brown
Nonsquare matrices as transformations between dimensions: Essence of Linear Algebra - Part 8 of 15
How do you think about a non-square matrix as a transformation?
Crash Course Kids
Space Compilation
Maybe you'd like to just hear about one topic for a while. We understand. Thus, we've created our Compilation Series. In this video, we look at some of our videos about Space. Sabrina talks to us about the Sun, stars, the universe, and...
SciShow
This Illusion Might Not Work Depending on Where You're From
Optical illusions are a fun way to play with the way your brain interprets what your eyes see, but if some of them don't work for you, it might be because of where you live.
TED Talks
TED: Nerdcore comedy | Ze Frank
Performer and web toymaker Ze Frank delivers a hilarious nerdcore standup routine, then tells us what he's seriously passionate about: helping people create and interact using simple, addictive web tools.
PBS
Can You Trust Your Eyes in Spacetime?
Last time we talked about what curvature means, looked at geodesics, great circles on spheres, and tried to understand the notion of "straightness". This week on Spacetime, we take a detour into how geometry works in spacetime. Get...
TED-Ed
TED-ED: What's an algorithm? - David J. Malan
An algorithm is a method of solving problems both big and small. Though computers run algorithms constantly, humans can also solve problems with algorithms. David J. Malan explains how algorithms can be used in seemingly simple...
3Blue1Brown
Who cares about topology? (Inscribed rectangle problem)
This is an absolutely beautiful piece of math. It shows how certain ideas from topology, such as the mobius strip, can be used to solve a slightly softer form of an unsolved problem in geometry.
3Blue1Brown
But WHY is a sphere's surface area four times its shadow?
Two proofs for the surface area of a sphere
3Blue1Brown
What does genius look like in math? Where does it come from? (Dandelin spheres)
A beautiful proof of why slicing a cone gives an ellipse.
Crash Course
Mitosis: Splitting Up is Complicated - Crash Course Biology
Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical copies.
Crash Course
The Poetry of Sylvia Plath: Crash Course Literature 216
In which John Green teaches you about the poetry of Sylvia Plath. When a lot of people think about Sylvia Plath, they think about her struggles with mental illness and her eventual suicide. Her actual work can get lost in the shuffle a...
SciShow
Why Herpes Is the Most Talented Virus Ever
Unlike with many other viruses, once you get a herpesvirus you’re stuck with it for life. But just how do these master trespassers accomplish this feat?
TED Talks
TED: The Museum of Four in the Morning | Rives
Beware: Rives has a contagious obsession with 4 a.m. At TED2007, the poet shared what was then a minor fixation with a time that kept popping up everywhere. After the talk, emails starting pouring in with an avalanche of hilarious...
TED Talks
TED: What seaweed and cow burps have to do with climate change | Ermias Kebreab
Scientists have long known that cows are a huge source of the greenhouse gas methane, contributing up to four percent of emissions globally. But could there be a way to make cattle less -- ahem -- gassy? Animal scientist Ermias Kebreab...
TED-Ed
TED-Ed: Why are human bodies asymmetrical? - Leo Q. Wan
Symmetry is everywhere in nature. And we usually associate it with beauty: a perfectly shaped leaf or a butterfly with intricate patterns mirrored on each wing. But it turns out that asymmetry is pretty important, too - and more common...
Crash Course
The Director: Crash Course Film Production
So... what do Directors even do? That's not an easy question to answer but today Lily will do her best. Generally, directors are the driving creative force behind a movie, deciding what kind of cinematic world the story will take place...
Crash Course
Motion in a Straight Line Crash Course Physics 1
In this, THE FIRST EPISODE of Crash Course Physics, your host Dr. Shini Somara introduces us to the ideas of motion in a straight line. She talks about displacement, acceleration, time, velocity, and the definition of acceleration. Also,...
Bozeman Science
Linear Momentum
In this video Paul Andersen explains how the linear momentum is equal to the product of the mass of an object and the velocity of the center of mass. He uses video analysis software to calculate the velocity of an object and therefore...
3Blue1Brown
Why do prime numbers make these spirals?
A curious pattern in polar plots with prime numbers, together with discussion of Dirichlet's theorem