3Blue1Brown
Exponential growth and epidemics
A primer on exponential and logistic growth, with epidemics as a central example
3Blue1Brown
Ever wondered why slicing a cone gives an ellipse? It’s wonderfully clever!
A beautiful proof of why slicing a cone gives an ellipse.
Bozeman Science
Ray Diagrams - Lenses
In this video Paul Andersen explains how ray diagrams for lenses can be used to determine the size and location of a refracted image. Images may be either real or virtual images. Ray diagrams for converging and diverging lenses are...
Bozeman Science
Motion
In this video Paul Andersen describes motion as the movement of an object over time. Displacement, velocity and acceleration are all defined. An experiment in motion is used to calculate velocity and acceleration of a tennis ball.
3Blue1Brown
A Curious Pattern Indeed: Circle Division - Part 1 of 2
Moser's circle problem. What is this pattern: 1, 2, 4, 8, 16, 31,...
Bozeman Science
The Rate Law
Paul Andersen explains how the rate law can be used to determined the speed of a reaction over time. Zeroth-order, first-order and second-order reactions are described as well as the overall rate law of a reaction. The rate of a reaction...
Crash Course
Immune System, part 1: Crash Course A&P
Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system's responses begin with physical barriers like skin and mucous...
Crash Course
Light Is Waves: Crash Course Physics
The way light behaves can seem very counter intuitive, and many physicists would agree with that, but once you figure out light waves it all starts to make more sense! In this episode of Crash Course Physics, Shini shows us how we know...
Bozeman Science
Position, Velocity and Acceleration
In this video Paul Andersen explains for the position of an object over time can be used to calculate the velocity and acceleration of the object. If a net force acts on a object it will experience an acceleration.
Bozeman Science
Magnetic Properties
In this video Paul Andersen explains how all material has magnetic properties. Ferromagnetic material can be permanently magnetized, paramagnetic material will align with magnetic fields, and diamagnetic material will align weakly with...
SciShow
6 Creative Ways People Used to Navigate the Oceans
People have been exploring the oceans since prehistoric times, way before they had GPS to help them figure out where they were. Here are 6 ingenious ways our ancestors navigated the oceans.
TED-Ed
TED-ED: What makes a poem a poem? - Melissa Kovacs
What exactly makes a poem - a poem? Poets themselves have struggled with this question, often using metaphors to approximate a definition. Is a poem a little machine? A firework? An echo? A dream? Melissa Kovacs shares three recognizable...
PBS
Are Mashups the End of Music Genres?
Some of the best things to be found on the internet are music mashups! It's a strangely pleasing experience to listen to totally unrelated artists commingling on the same music track. Mashups are awesome because they break genre...
TED-Ed
TED-Ed: Can you outsmart the fallacy that divided a nation? | Elizabeth Cox
It's 1819. The US is preparing to make Missouri and Maine new states. One representative insists that slavery shouldn't be allowed in any new state. Another believes it should be a state's right to choose. A compromise is proposed:...
Crash Course
Correlation Doesn’t Equal Causation - Crash Course Statistics
Today we’re going to talk about data relationships and what we can learn from them. We’ll focus on correlation, which is a measure of how two variables move together, and we’ll also introduce some useful statistical terms you’ve probably...
Bozeman Science
The Central Dogma: Transcription and Translation
Mr. Andersen explains the Central Dogma of biology. He shows how DNA is transcribed to form mRNA and how mRNA is translated into a protein.
TED Talks
TED: The future of digital communication and privacy | Will Cathcart
People send 100 billion WhatsApp messages every day -- and they're all encrypted to protect them from potentially curious entities like companies, governments and even WhatsApp itself. With our increased reliance on digital communication...
SciShow
The Hamster That Saved Thousands of COVID Patients
Forget lab rats — meet the Chinese or striped-back hamster, an unassuming little rodent whose role in research over the years has led to breakthroughs in genetics, pharmaceutics and more!
TED Talks
David Macaulay: An illustrated journey through Rome
David Macaulay relives the winding and sometimes surreal journey toward the completion of Rome Antics, his illustrated homage to the historic city.
Bozeman Science
System Boundaries
In this video Paul Andersen explains how the boundary between the system and environment is chosen to simplify analysis of a physics problem.
MinuteEarth
Why Bird Penises Are So Weird
Male birds have the largest genital diversity of any class of animals because their sex chromosomes make it easy to pass male-helping mutations down the line. ___________________________________________ To learn more, start your googling...
SciShow
How Can It Be Too Hot To Fly?
How does heat affect airplanes? Turns out heat, speed and density connect to create dangerous situations.
Bozeman Science
Cellular Respiration Lab Walkthrough
Mr. Andersen walks you through the cellular respiration lab.
TED Talks
TED: This is your brain on communication | uri Hasson
Neuroscientist uri Hasson researches the basis of human communication, and experiments from his lab reveal that even across different languages, our brains show similar activity, or become "aligned," when we hear the same idea or story....