A card from a free library — ask anything, no account, works offline. Every card carries its source.
Light bends: Snell's law at a glass surface
physical
Passing from air into glass (n = 1.5) at 30°, a ray refracts to 19.47° — n₁ sin θ₁ = n₂ sin θ₂. The same law bends every lens and every rainbow. Worked & sealed by the engine — sin θ₂ = (1·sin30)/1.5 → θ₂ ≈ 19.47°. [HOLDS; open the seal to re-check.]
source
card id
card_works_snell
adjoining cards
- on the shelf of → The Works — sealed, worked demonstrations — a member of the the-works shelf in the keeping
- paves → The Floor of Discovery — one floor, and by its design the fear of God — A worked, engine-sealed demonstration — a paving-stone of the floor of reality.
- demonstrates → sin θ₂ = (1·sin30)/1.5 → θ₂ ≈ 19.47° — A worked demonstration in the same field (optics).
- kindred → The energy in a single green photon — A sibling worked demonstration in optics.
- adjacent → The Carnot ceiling no engine can beat — Neighbouring worked demonstrations in the same part of the volume.
- adjacent → The ideal gas law solves for temperature — Neighbouring worked demonstrations in the same part of the volume.
Is this card incomplete? Tell the library — it will call out for more ↗