Crash Course
Big Guns: The Muscular System - CrashCourse Biology
Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax.
Crash Course
Statics: Crash Course Physics
The Physics we're talking about today has saved your life! Whenever you walk across a bridge or lean on a building, Statics are at work. Statics is the study of objects when they're NOT accelerating. In this episode of Crash Course...
TED-Ed
TED-ED: Making sense of irrational numbers - Ganesh Pai
Like many heroes of Greek myths, the philosopher Hippasus was rumored to have been mortally punished by the gods. But what was his crime? Did he murder guests or disrupt a sacred ritual? No, Hippasus's transgression was mathematically...
Curated Video
Compare Lengths of Objects by Drawing Pictures
In this video lesson, we present various examples, such as measuring train lengths and finding missing tiles, to help us compare lengths of objects by drawing pictures. The lesson emphasizes the importance of subtraction and highlights...
Crash Course
Temperature: Crash Course Physics
Bridges. Bridges don't deal well with temperature changes. In order to combat this, engineers have come up with some work arounds that allow bridges to flex as they expand or contract. In this episode of Crash Course Physics, Shini talks...
Crash Course
Reaching Breaking Point: Materials, Stresses, & Toughness: Crash Course Engineering #18
Today we’re going to start thinking about materials that are used in engineering. We’ll look at mechanical properties of materials, stress-strain diagrams, elasticity and toughness, and describe other material properties like hardness,...
SciShow
Why Does Hair Get Frizzy When It's Humid?
If your hair gets frizzy when the humidity is high, try not to think of it as a bad hair day—you're really just a human hygrometer!
Bozeman Science
AP Biology Lab 6: Molecular Biology
Paul Andersen explains the two major portions of the molecular biology lab in AP Biology. He starts by discussing the process of transformation. He explains how you can use the pGLO plasmid to produce glowing E. coli bacteria. He then...
Bozeman Science
Resistors and Capacitors
In this video Paul Andersen explains how resistors and capacitors affect circuits. The resistance of a resistor is affected by the resistivity of the material and the geometry of the resistor. The current through a resistor can be...
Crash Course Kids
Following the Sun
Have you ever wondered why your shadow is longer sometimes and shorter others? It turns out it all has to do with that marvelous big ball of light in the sky; The Sun! This first series is based on 5th grade science. We're super excited...
SciShow
The Fibonacci Sequence: Nature's Code
Hank introduces us to the most beautiful numbers in nature - the Fibonacci sequence.
PBS
What are the Strings in String Theory?
Why strings? What are they made of? How did physicists even come up with this bizarre idea? And what's all this nonsense of extra dimensions?
Crash Course
Special Relativity: Crash Course Physics
So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini talks to us about perspective, observation, and how relativity is REALLY weird!
SciShow
Here's What Kevlar and Your Smartphone Have in Common
You might not believe it, but the same chemistry that brought us bulletproof vests and modern sailing sails also gave us the technology to build your smart phone. But that doesn’t mean these chemists were thinking about these...
TED Talks
TED: The science of cells that never get old | elizabeth Blackburn
What makes our bodies age ... our skin wrinkle, our hair turn white, our immune systems weaken? Biologist elizabeth Blackburn shares a Nobel Prize for her work finding out the answer, with the discovery of telomerase: an enzyme that...
Crash Course
Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry
Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress...
Crash Course Kids
Measurement Mystery
So now that we know what Properties are, how can we use them to figure things out? In this episode of Crash Course Kids, Sabrina uses them to solve the mystery of what she tripped over last night. This first series is based on 5th grade...
TED-Ed
TED-Ed: How fast is the speed of thought? | Seena Mathew
Your mortal enemy has captured you and hooked you up to a bizarre experiment. He's extended your nervous system with one very long neuron to a target about 70 meters away. At some point, he's going to fire an arrow. If you can then think...
Bozeman Science
Simple Harmonic Motion
In this video Paul Andersen explains how simple harmonic motion occurs when a restoring force returns an object toward equilibrium. The two types of harmonic motion studied in AP Physics are the mass spring oscillator and the simple...
Bozeman Science
Significant Digits
Mr. Andersen explains significant digits and shows you how to use them in calculations.
Bizarre Beasts
These Things Are Alive
New ReviewThe salp's seemingly simple body hides a surprisingly complex life history that involves cloning itself, changing sex, and fighting climate change through the power of poop.
Curated Video
The Absolute Beginners Guide to Cyber Security 2023 - Part 1 - Brute Force Attacks
New ReviewIn this video, you will learn about a popular method of cyber-attack called the brute force attack.
Curated Video
Gravitational Force Between a Point Mass and a Uniform Rod: Calculus-Based Physics
New ReviewLearn how to calculate gravitational attraction between a point mass and a uniform rod using integration and Newton’s law of universal gravitation—essential for advanced physics students.
Curated Video
Understanding Variables in Statistics: Quantitative vs. Qualitative
New ReviewThis video introduces basic concepts related to statistics, focusing on the idea of variables. Variables are defined as numbers or characteristics that can be counted or measured. The video gives examples such as age, length, weight, and...