Every concept
already exists.
Your job is to see it.
PHYS.RUN teaches math and physics by constructing the one scene where the truth cannot be denied. No definitions. No formulas until the end. Just a thing, in a place, doing what it does.
This is what a Lens
looks like.
One scene. One question. One answer that, once you’ve watched it, you can’t un-watch. The full proof runs about two minutes — and the formula appears at the very end.
Perception first.
Definition last.
Traditional education says: “Here is the concept. Here is the definition. Here are examples.”
PHYS.RUN says: Here is a physical situation. Look at it. Now watch what happens. Could it be any other way? No? Then you already understand.
The formula arrives at the end — as a name for what you just built, not a thing you had to accept on faith.
Not an analogy.
The mechanism.
Three spheres on a rope, orbiting a planet. The inner one pulls faster. The outer, slower. Feel the rope stretch.
That is not an analogy for tidal forces. That IS tidal forces, simplified to the point where they become impossible to miss.
A Lens is short.
A Lens is whole.
Every Lens is a self-contained proof, two to four minutes long. An anchor, a construction, an arrival. You walk in with a question. You walk out with a piece of permanent knowledge.
New ones every week. Each one built to make a concept mechanically unavoidable.
landing.pricingTeaser.title
Visitor
Read three Lenses a week. Browse the Atlas. Decide whether the library is worth a card.
- 3 Lenses each calendar week (resets every Monday)
- Browse the full Atlas
- Captions, narration, and the instrument panel
Scholar
pricing.mostPopularEvery Lens, present and future. Progress that follows you across devices. The library is yours.
- Every Lens — no weekly limit
- Progress tracking across devices
- Downloadable transcripts of every Lens
Institution
Your students get the full library; you get bulk seats, SSO, and licensing for content reuse.
- Bulk seats for students or staff
- SSO via Google Workspace, Microsoft, or SAML
- Per-cohort progress dashboards
What the learners say
Join themII understood tidal forces in eleven minutes — after a decade of half-understanding. I didn’t learn anything new. I just finally saw it.
IThis is what Feynman was trying to do with his lectures, but with a computer patient enough to slow down at the exact moment I needed it to.
II teach 8th-grade math. I use the “walk around” Lens for commutativity now. Students don’t forget it, because they didn’t memorize it — they built it.