In which Hank shows you that, while it may seem like the Universe is messing with us, equilibrium isn't a cosmic trick. Here, he shows you how to calculate equilibrium constant & conditions of reactions and use RICE tables all with some...

There's one crater that may be older than any that we know of. Except there's a snag, it might not actually be a crater at all.

The ability to recognize sounds and identify their location is possible thanks to the auditory system. That's comprised of two main parts: the ear, and the brain. The ear's task is to convert sound energy into neural signals; the brain's...

One of the strongest rocks in the world is one that you might not expect, and the story of how it formed deep under the earth is intense!

SciShow explains what really causes those popping sounds your joints make -- fluid dynamics, people! -- and what you should watch out for if you're a habitual knuckle-popper.

We learn a lot about our surroundings thanks to sound. But... what is it exactly? Sound, that is. What is sound? And how does it travel? And what is this Doppler Effect that we've heard so much about? In this episode of Crash Course...

A barometer is an instrument that measures air pressure, allowing weather forecasters and scientists to better predict extreme weather events. Despite its incredible usefulness, inventing the barometer was no walk in the park. Asaf...

The terminal velocity of an object is the speed at which the force of drag equals the force of gravity on that object.

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...

In the video Paul Andersen explains how Bernoulli's Equation describes the conservation of energy in a fluid. The equation describes the pressure energy, potential energy, and kinetic energy of a fluid at a single point. A sample problem...

We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas...

Voyager 1 may be out of our solar system (and 40+ years old) but we're still getting plenty of new data from our interstellar space probe.

Wind is everywhere. The air is constantly moving, sometimes gently, sometimes violently. Why? Pressure, temperature and rotation come together to make wind. Here's how.

Can you feel them in your fingers? How about in your lungs? Vibrations are all around us, so let’s explore some everyday vibrations!

We've all experienced thunder, but what ARE all those claps, booms, and rumbles?

This week, Dr. Shini Somara goes toe to toe with Hank in a battle of wits about fluid dynamics and life in space.

It's an old cliche: an opera singer hits a note so high, it breaks a wine glass. It may seem over the top, but with a little science (and an amp), you too can break a glass like the finest soprano!

Humans’ experiences with ventilators have taught us that sighing isn’t just a way to express yourself: it’s a vital part of our everyday breathing.

If you want to be able to breathe underwater, you're going to need to get creative. So some turtles, dragonfly nymphs, and sea cucumbers decided to use their butts.

In this video Paul Andersen defines the equilibrium constant (K) and explains how it can be calculated in various reversible reactions. The equilibrium constant is a ratio of the concentration of the products to the concentration of the...

In this video Paul Andersen defines the rate of a reaction as the number of reactants that are consumed during a given period of time. The rate of the reaction can be affected by the type of reaction as well as the concentration,...

In this video Paul Andersen explains how gases differ from the other phases of matter. An ideal gas is a model that allows scientists to predict the movement of gas under varying pressure, temperature and volume. A description of both...

If you don't have vision problems, getting an eye exam probably hasn't been your top priority, however visiting an ophthalmologist won't just tell you about your eyes, it can reveal a lot about your health.

In this video Paul Andersen explains how the First Law of Thermodynamics applies to an ideal gas in a piston. A pressure-volume graph can be used to determine the type of thermodynamic process. Included is a discussion of and P-V diagram...