The Quantum World
Explore the counterintuitive rules that govern the universe at its smallest scales. Discover how superposition, entanglement, and quantum tunneling shape everyday technology and fuel the computing revolution.
Like Duolingo, but for The Quantum World. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
23 levels across 3 sections, about 46 minutes end to end, roughly 9 days at five minutes a day. It moves through Witnessing the Weird Rules, How Quantum Mechanics Builds Matter, and Putting the Microscopic World to Work. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in The Quantum World
- Light spreads out from both slits like overlapping water ripples
- Overlapping wave crests amplify each other while crests meeting troughs cancel out
- The result on the detector screen is a series of multiple alternating bright and dark stripes, not just two lines
- Even when isolated, a single photon's quantum wave passes through both slits simultaneously
- A single particle interferes with itself on its way to the screen
- Each photon registers as an individual dot, but aggregate hits over time reveal the wavy interference pattern
- Monitoring which slit a photon travels through forces it to choose one specific route
- Knowing the path destroys the wave behavior, leaving two localized clump bands like normal particles
- Removing or disabling the detector immediately restores the wave interference pattern
- In quantum physics, measuring a system requires physical interaction (like bouncing a photon or electron off it)
- The physical act of detection collapses the spread-out wave of possibilities into a single definite location
- Observation is not a passive glance from the sidelines; it directly changes the system's state
- Superposition is a mathematical blend of potential outcomes, not physical cloning or being in two places at once
- A particle only manifests at a single definite location once measured
- The state tracks the likelihood of each outcome rather than dual physical existence
- A wave function maps probabilities across space rather than tracing a definite physical path
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 Quantum World 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.
When a beam of light passes through two narrow slits, how does it travel onward?
Get it right to open this lesson and 22 more in the app.
Where The Quantum World takes you
- 1
Witnessing the Weird Rules
- The Double-Slit Dilemma: Watching Light Choose
- Superposition: Tracking States of Possibility
- Entanglement: Mapping Spooky Connections
- 2
How Quantum Mechanics Builds Matter
- Quantization: Uncovering Why Matter Is Stable
- The Uncertainty Principle: Navigating Nature's Hard Limits
- Quantum Tunneling: How Particles Pass Through Barriers
- 3
Putting the Microscopic World to Work
- Everyday Quantum Tech: Spotting Subatomic Rules at Work
- Quantum Computing: Thinking Beyond Binary Logic
3 sections · 8 units · 23 levels. Built to play, not to enroll.
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 Quantum World is taught in the The Professor style: clear, structured, thorough. 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.
More Science on Tomo
Quantum Physics for the Real World
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How the Quantum World Works
Discover the surprising rules of nature at its smallest scale. Learn why particles act like waves, how atoms communicate across space, and how quantum oddities power the device in your hand.
Quantum Physics: The Rules of Reality
Discover the strange and beautiful laws that govern the subatomic world, from particles that exist in two places at once to the quantum secrets inside your smartphone.
How Quantum Physics Works
Explore how reality behaves when you zoom down to the atomic scale. Build an intuitive grasp of wave-particle duality, superposition, and entanglement without needing complex mathematics, and see how these bizarre rules power modern technology.
Quantum Physics in Everyday Tech
Discover how bizarre quantum mechanics quietly powers our everyday world, from smartphone chips and lasers to medical MRI scans. Explore the counterintuitive rules behind modern devices and the coming leap into quantum computing.
Everyday Quantum Physics
Discover the strange mathematics governing the microscopic universe and the modern devices in your pocket. Learn how probability vectors, wavefunctions, and quantum leaps make lasers, solid-state drives, and quantum computers work.
Start The Quantum World today.
Download Tomo, search The Quantum World, and play your first lesson in under a minute.