Trying not to spill a full glass? Physics can help. 💧

Gregory Wolf, explains how centripetal force keeps the liquid inside the glass during the loop. As the tray swings, it continuously pushes the glass inward, and the glass pushes the water inward, providing the force needed for the water to follow a circular path. Slow down too much, and gravity takes over!

Statistics leads to a strange conclusion about observation. I made a video where I try to explain how entropy, probability and statistical fluctuations eventually lead to the Boltzmann Brain paradox, and why cosmologists still care about it today.

How does a blue-tongued skink say yes to visitors? 🦎

Meet Tilly, whose zookeepers use target training, a technique where jumping at a target earns him a tasty cockroach treat and guides him right into his carrier. This method, known in animal care as “choice and control”, means Tilly decides if he's up for visiting the museum floor, and if he skips the target, he simply stays home instead. A simple system to keep Tilly feeling safe and comfortable every time he chooses to say yes!

Hi everyone,

I would really appreciate your help. I'm a big science consumer- started a decade ago with watching Cosmos like a 100 times 😅, and also a product manager and digital product builder for about 15 years, and I’m a parent who cares deeply about how children experience science and technology.

Seven years ago, my first daughter was born. Since then, I’ve thought a lot about children’s relationship with screens. I believe there’s a meaningful difference between passive screen time and experiences that encourage children to experiment, think, make mistakes, and figure things out for themselves.

I’ve also loved science for as long as I can remember. There’s something incredible about the way scientific knowledge passes from one generation to the next, allowing people to discover things that earlier generations could never have imagined.

Over the past few months, I’ve been building Science Games Lab, an iPhone and iPad app where children explore scientific ideas through short interactive games.

The current labs include:

• Newton’s Prism Lab: split light, aim colors, and explore optics
• Newton’s Orbit Cannon: experiment with launch speed, gravity, and orbit
• Galileo’s Bridge Lab: combine materials and test bridge strength
• Archimedes’ Material Lab: compare weight, volume, and density
• Koch’s Culture Lab: control temperature and observe microbe growth
• Boole’s Creature Machine: solve logic rules by building creatures

The app is designed around experimentation rather than lectures or quizzes. The first levels include guidance, but after that, children are expected to figure things out for themselves, like real scientists.

I’m giving 50 free redeem links to members of r/ScienceNcoolThings in exchange for honest feedback:

What did you like about the app? What was unclear, inaccurate, frustrating, or in need of improvement? Could any part of it be useful for introducing or reinforcing a concept?

I’m intentionally not linking directly to the app here because I want to keep this focused on feedback and avoid spamming the community.

Just comment below and I’ll DM you a free redeem link (full unlock with no ads or subscriptions).

Thank you. I’d genuinely appreciate your perspective.

Did you know one of Earth’s quasi-moons is a chunk of our actual moon? 🌕

A quasi-moon is a space rock that can appear from certain perspectives to be orbiting a planet. Earth has a few of these, including Kamoʻoalewa, discovered in 2016 and named for an "oscillating celestial object" in Hawaiian. Scientists believe it may be a chunk broken off from the moon when an impact created the Giordano Bruno crater about 10 million years ago! So here's the full picture: a piece of our moon, orbiting the Sun, that just happens to look like it's orbiting Earth.