This video is about gravitational waves in the weak field limit as discovered by the LIGO collaboration, explained by parallels to electromagnetic radiation, sound waves, water waves, etc. I want to see Cat LIGO ASAP!

While there's still a lot that astrophysicists don't know about the Big Bang, there are some things we do know. So today, let's get caught up on the Big Bang basics.

When we detected the very first gravitational wave, a new window was opened to the mysteries of the universe. We knew we’d see things previously thought impossible. And we just did - an object on the boundary between neutron stars and...

Sometimes, you ask ChatGPT to do a math problem that an arithmetically-inclined grade schooler can do with ease. And sometimes, ChatGPT can confidently state the wrong answer. It's all due to its nature as a large language model, and...

It's taken the work of many programmers to turn computers into something we carry in our pockets, and here are five (technically 10!) that we think you should be aware of.

Scientists have worked out how likely it is that distant planets can see earth, and we are learning new ways to study the magnetic fields of galaxies.

In the early days of spaceflight, if NASA needed to plot a rocket's path or confirm a computer's calculations, they knew who to ask: Katherine Johnson.

It's taken the work of many programmers to turn computers into something we carry in our pockets, and here are five (technically 10!) that we think you should be aware of.

Quantum field theory is notoriously complicated, built from mind-bendingly abstract mathematics. But are the underlying rules of reality really so far from human intuition? Or are physicists just showing off? For better or worse, the...

This video is about gravitational waves in the weak field limit as discovered by the LIGO collaboration, explained by parallels to electromagnetic radiation, sound waves, water waves, etc. I want to see Cat LIGO ASAP!

On earth it rains water, on the exoplanet WASP-76b, it rains liquid iron, but no matter what planet you're on, the rain drops there have a lot more in common than you might think.

We’ve talked about many important concepts for engineers, but today we’re going to discuss a hugely important one that you might not even realize is an engineering concept: ethics. We’ll talk about what a Code of Ethics is. We’ll explore...

Romantic chemistry is all about warm, gooey feelings that gush from the deepest depths of the heart-right? Not quite. Actually, the real boss behind attraction is your brain, which runs through a very quick, very complex series of...

Hank tells the story of the mysterious star known as "Methuseleh," and why scientists think that it is the oldest known star in the universe.

The discovery of the structure of DNA was one of the most important scientific achievements in human history. The now-famous double helix is almost synonymous with Watson and Crick, two of the scientists who won the Nobel prize for...

Today we’re going to talk about Bayes Theorem and Bayesian hypothesis testing. Bayesian methods like these are different from how we've been approaching statistics so far, because they allow us to update our beliefs as we gather new...

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...

Today we're going to talk about a fundamental part of all modern computers. The thing that basically everything else uses - the Arithmetic and Logic Unit (or the ALU). The ALU may not have the most exciting name, but it is the...

Paul Andersen explains how mathematics and computational thinking can be used by scientists to represent variables and by engineers to improve design. He starts by explaining how mathematics is at the root of all sciences. He then...

Howcast - Learn how to change hair color from certified trainer Scott Strong of The Training Farm in NYC in this Howcast Photoshop tutorial, part one of two.

Howcast - Learn how to understand formulas and functions in this Howcast Excel tutorial with expert Shir Moscovitz.

In this video, we’re diving into **ratios and proportions* with four thought-provoking questions. 🔢 *Here’s what we’ll cover:* ✅ Finding the value of a ratio: Is 1/10 the correct value for 1/2:1/5? ✅ Checking for proportional...

After learning calculus and linear algebra, it's time for differential equations! This is one of the most important topics in mathematics, especially for those who are interested in physics and engineering, as these equations show up...

Declining Balance Method - Depreciation - Accounting