The Laws of the Universe
Discover the mathematical elegance and physical laws that govern everything from falling apples to distant galaxies. Learn to calculate the forces of nature and see the world through the eyes of history's greatest thinkers.
Like Duolingo, but for The Laws of the Universe. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A deep dive: 40 levels across 6 sections, about 80 minutes end to end, roughly 16 days at five minutes a day. It moves through The Mechanics of Motion, Energy and the Universal Currency, Gravity and Celestial Paths, The Invisible Forces, Waves and Thermodynamics, and Modern Foundations. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in The Laws of the Universe
- An object can be at rest relative to one observer while in motion relative to another
- Speed only measures how fast an object moves
- A frame of reference is the 'point of view' used to judge motion
- Velocity must include both the rate of motion and the direction of travel
- The Earth itself is a moving frame of reference, though we often treat it as stationary
- Changing direction changes velocity even if the speed stays the same
- The concept that motion and stillness depend on the observer's frame of reference
- Distinguishing velocity from speed by including direction
- Acceleration is any change in velocity
- Frame of reference
- Slowing down is acceleration
- Turning is acceleration
- Velocity vs Speed
- Gravity accelerates all objects equally
- Air resistance
- Mass and free-fall
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The Laws of the Universe the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
What does speed tell us about a rolling ball?
Get it right to open this lesson and 39 more in the app.
How to learn The Laws of the Universe, step by step
Go in order. 40 short levels across 6 sections, about 1 hour 20 minutes in all, five minutes a day.
- 1
The Mechanics of Motion
- Describing How Things Move
- Force and Newton’s Laws
- 2
Energy and the Universal Currency
- Work and Kinetic Energy
- Potential Energy and Conservation
- 3
Gravity and Celestial Paths
- The Law of Universal Gravitation
- Orbits and Circular Motion
- 4
The Invisible Forces
- Electricity and Static Fields
- Circuits and Current Flow
- Magnetism and Induction
- 5
Waves and Thermodynamics
- The Physics of Waves
- Heat and Entropy
- 6
Modern Foundations
- Relativity and Spacetime
- The Quantum World
6 sections · 13 units · 40 levels. Built to play, not to enroll.
Questions about The Laws of the Universe
How do I learn The Laws of the Universe?
Go in order: start with The Mechanics of Motion, then Energy and the Universal Currency, then Gravity and Celestial Paths, then The Invisible Forces, and 2 more sections after that. On Tomo that's 40 short levels, about 1 hour 20 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for The Laws of the Universe?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. The Laws of the Universe is one of its free courses, and you can type any other topic to get a course of your own.
Is The Laws of the Universe free?
Yes. The Laws of the Universe is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn The Laws of the Universe?
40 levels across 6 sections, about 1 hour 20 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start The Laws of the Universe?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
The Laws of the Universe is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start The Laws of the Universe today.
Download Tomo, search The Laws of the Universe, and play your first lesson in under a minute.