The ratio of a circle's circumference to its diameter is always the same: 3.14159 and on and on (literally!) forever. This irrational number, pi, has an infinite number of digits, so we'll never figure out its exact value no matter how...

It finally happened! The James Webb Space Telescope is on its way to capturing never-before-seen images of the universe! But now that it’s airborne and unfurled, what are its next steps before it can deliver the goods?

Hank talks to some VIPs from CERN about the question on everyone's mind: does the Higgs Boson particle exist? And describes how CERN is going about finding the answer.

Hank interviewed Sergio Bertolucci on October 11, 2011 and Rolf...

Have we been wrong about how big neutron stars are this whole time?

In this video Paul Andersen explains how classical waves (like light) can have particle properties. Albert Einsetein used the photoelectric effect to show how photons have particle properties.

If you don't have any idea what antimatter is, you don't have to feel bad - the brightest minds in the world have only recently begun to understand what it is and how it works. Hank gives us the run down on what we know about antimatter,...

Scientists were able to measure the emission lines of antimatter! And we may have some new clues about how dinosaurs lost their teeth on the way to becoming birds.

In this episode we explain what quantum tunneling is and how it works!

Chemistry is the study of matter - stuff, and how it interacts with other stuff. Even though chemistry doesn't make a lot of news these days, chemists are making discoveries that change lives all the time. If Hank had to narrow down all...

What is El Nino? Why can't we predict the weather? Just a few slight changes in global climate patterns can drastically shift the weather. Thanks to chaos theory, even our smartest meteorologists can't predict weather correctly.

The Heisenberg Uncertainty Principle states that you can never simultaneously know the exact position and the exact speed of an object. Why not? Because everything in the universe behaves like both a particle and a wave at the same time....

Quantum tunneling happens when a particle seemingly teleports across a barrier. But despite how instantaneous this event sounds, recent research suggests that it doesn’t happen nearly as fast as you might think.

Eighty-five percent of the matter in our universe is dark matter. We don't know what dark matter is made of, and we've yet to directly observe it, but scientists theorize that we may actually be able to create it in the Large Hadron...

A SciShow Kids viewer wrote us and asked: How does soap work? Find out what really happens when you take a bath!

Hank continues our series on the four fundamental forces of physics by describing the weak interaction, which operates at an infinitesimally small scale to cause particle decay.

What is light? That is something that has plagued scientists for centuries. It behaves light a wave... and a particle... what? Is it both? In this episode of Crash Course Physics, Shini introduces to the idea of Quantum Mechanics and how...

In this episode, I revisit the wave particle duality and present an intuitive analogy for understanding how it works.

Can we accurately describe light as exclusively a wave or just a particle? Are the two mutually exclusive? In this third part of his series on light and color, Colm Kelleher discusses wave-particle duality and its relationship to how we...

As we learn more about electricity, we have to talk about fields. Electric fields may seem complicated, but they're really fascinating and a crucial part of physics. In this episode of Crash Course Physics, Shini chats about capacitors,...

In this video Paul Andersen describes some of the properties of electromagnetic radiation. The electromagnetic spectrum varies by wavelength from radio waves to gamma rays. We only see a portion of the spectrum known as visible light. ...

Though our Sun is something we can count on to rise and set each day, it also comes with some phenomena that can catch us by surprise: solar winds. To better predict when these winds will travel all the way to Earth, we sent the Parker...

In this episode, we discuss the Wave Particle Duality and why quantum mechanics is weirder than anything we're used to in our daily lives!

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