Have you experienced embarrassing voice cracking? Most people have, and there’s a lot of reasons why you might be affected. From illness, stress, and good old puberty.

Continuing with last week's introduction of calculus, Shini leads us through the ways that integrals can help us figure out things like distance when we have several other key bits of information. Say, for instance, you wanted to know...

In this video Paul Andersen explains how a sine or cosine wave can describe the position of the wave based on wavelength or wave period. A wave function can the position of a wave as a function or the amplitude and wavelength or the...

Decades after the fall of the Third Reich, it feels impossible to understand how Adolf Hitler, the tyrant who orchestrated one of the largest genocides in human history, could ever have risen to power in a democratic country. So how did...

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.

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.

In this video Paul Andersen explains how the energy in a closed system can be converted from kinetic to potential to kinetic energy. Sample problems and a simulation is contained.

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:...

If you’ve got a job interview coming up and you’re feeling a little nervous, don’t worry. If you’re anything like me, you’ve probably seen enough celebrity interviews to know what works and what doesn’t. Sure, it's not as flashy, but you...

A bug in the superconductor system has trapped your team in 11 separate dimensions. Can you get them back home safely? -- It was a normal Tuesday at the superconductor, until a bug in the system caused your team to be trapped in 11...

Is Glass a Liquid?

How did we get here? Well, in terms of Atomic Chemistry, Hank takes us on a tour of the folks that were part of the long chain of other folks who helped us get to these deeper understandings of the world. From Leucippus to...

Did you know that, at a certain point on a moving wheel... there's no motion? I mean, kinda... it's all relative, right? Prepare to have your mind blown in this episode of Crash Course Physics where Shini delves into the world of...

Find out why these arachnids are among the least B of humanity's BFFs. Yeah, they're blood-sucking parasites, but that's not all of it!

While we might consider elections to be the cornerstone of democracy, the Athenians who coined the term actually employed a lottery system to choose most of their politicians. Melissa Schwartzberg describes the ins and outs of the...

Today we begin our discussion of computer graphics. So we ended last episode with the proliferation of command line (or text) interfaces, which sometimes used screens, but typically electronic typewriters or teletypes onto paper. But by...

Mr. Andersen explains the difference between potential and kinetic gravitational energy. He also uses physics to calculate the energy in various objects.

A Simple Proof of Conservation of Energy

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...

Imagine trying to use words to describe every scene in a film, every note in a song, or every street in your town. Now imagine trying to do it using only the numbers 1 and 0. Every time you use the Internet to watch a movie, listen to...

Diane Abbott says Burnham decision makes Starmer look ‘weak’Credit: Times Radio

In this video Steven Franklin discusses the Bishops' Wars and how the need to put down this Scottish rebellion led to the recalling of the English Parliament and the first step toward the English Civil War.

That dent in your pinky from propping up your phone is more than a quirky mark—it could be a sign of real strain. Discover how this common grip can lead to issues like trigger finger and nerve compression, and learn the surprising...

The Chinese take hierarchy very seriously, but don’t be intimidated! Navigating corporate and government hierarchies is key to successful business negotiations and decision-making. Learn how this complex system impacts work culture,...