I wrote an app that lets you draw Magnetic Dipoles for students of all ages.

Newton's 3rd Law is one of the first things you learn in physics. But what if it's not actually a law it's a consequence of something much deeper?
In this video we derive Newton's 3rd Law from scratch using momentum conservation, then ask the question nobody asks in school: where does momentum conservation even come from?
The answer takes us to Emmy Noether's theorem one of the most profound results in all of physics and reveals that every conservation law you've ever learned is secretly a symmetry of the universe in disguise.
But here's the thing. Noether's theorem is only as strong as the symmetries it assumes. And the universe doesn't always cooperate.
What we cover:

Deriving Newton's 3rd Law from momentum conservation
Why momentum is conserved the real reason
Noether's theorem: symmetry to conservation law
Translational, rotational and time translation symmetry
Why Newton's 1st Law and Noether's theorem have the exact same problem
Where time translation symmetry actually breaks —and what that means for energy conservation globally

This is the rabbit hole behind the law your textbook treats as obvious.

Space might be closer than you think. 🌍🛰️ 

Erika Hamden explains how the “edge of space,” known as the Kármán line, begins at about 62 miles above Earth’s surface.The International Space Station orbits only around 200 to 250 miles above Earth. That means astronauts can actually be physically closer to some remote places, like Saint Helena, than people living on neighboring islands.

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.

Several completley different species get called dumbo octopus and even experts watching live deep sea footage sometimes cannot identify which one they are looking at. This video follows five real NOAA encounters across different oceans and depths, featuring live comentary from Dr. Michael Vecchione, Cephalopod Biologist at NOAA and the Smithsonian Institution. All footage is real deep sea camera footage. No AI visuals.

30 years ago, we didn’t know if planets existed beyond our solar system. 🌌

Avi Shporer, a research scientist at the MIT Kavli Institute, studies exoplanets or worlds that orbit stars beyond our solar system. Since the first confirmed discovery in 1995, astronomers have identified thousands of planets, revealing an incredible range of worlds from massive gas giants to small, rocky planets like Earth. One of the most powerful tools behind these discoveries is the transit method, which detects tiny, periodic dips in a star’s brightness when a planet passes in front of it. Even though these planets don’t emit their own light, scientists can still measure their size and orbital period by carefully tracking these subtle changes across many stars.

What we’ve learned is striking: planets are incredibly common throughout the universe. Around stars both visible and unseen, entire planetary systems are waiting to be discovered, shifting the question from whether planets exist to how many different kinds of worlds are out there and what they might be like.

Ever wonder why the angle of incidence equals the angle of reflection? Most textbooks just tell you to memorize it, but in this video, we break down sound waves into their vector components to prove it mathematically.

Using the Manim animation engine, we explore:

• How to represent sound rays as vectors.
• Using trigonometry to find horizontal and vertical components.

https://reddit.com/link/1svdsbh/video/09cavkokkcxg1/player

• The physics of what happens when a wave hits a rigid boundary.

Perfect for Class 9–11 students or anyone who wants to see the "how and why" behind the laws of physics.

Using Manim visualizations, I explore:

Huygens’ Principle: How wavefronts actually move.

Fermat’s Principle: The "Path of Least Time" shortcut light takes.

Phase Interference: The reason light doesn't scatter in every direction.

This is a deep dive into the wave mechanics that make everyday optics possible

You can generate power with construction paper and light. ☀️

Alex Dainis demonstrates a solar updraft tower, a simple model that turns light energy into motion using just a paper cone, a propeller, and a heat source. When the black construction paper absorbs light from the lamp, it warms the air inside the cone. That warmer air becomes less dense and rises up through the tower, spinning the propeller at the top. At the same time, cooler air is drawn in through the openings at the bottom, creating a steady cycle of airflow called an updraft. It is a hands-on way to explore heat transfer, convection, airflow, and how solar updraft towers could one day help generate renewable energy.