A physics engine, and a verification tool enforced on top of it. PhysWall inverts a closed, published, non-linear physical law at a single measurement point — and refuses when the inverse is not unique. Seven laws, one engine, and the same refusal in all of them.
Twelve tools, and each one asks the same question in a different subject: what does this measurement support, and where does it stop?
basics — somebody gave you a number and something does not sit right. Three checks, no jargon, and it says when it cannot help.
finance — a price is a measurement. Inverting it gives the growth the market already assumes. Not a forecast and not advice.
error-propagation — for accredited laboratories. An uncertainty budget, and three questions from one table. Free.
adjudication — whether evidence supports a conclusion, graded by the kind of reason rather than by a number.
basketball — does a streak mean anything, or is it what chance looks like? Free.
gauge — a stream gauge read two ways. Did the instrument drift, or did the world change? Free.
waves — where the shallow-water approximation stops being true. Free.
lighttime — a spacecraft's distance from the time light takes to reach it and return.
climbing — speed and power against gravity, from a height and a time.
bounds — the seven physical domains and the status of each. Two are marked waiting on a laboratory, in the open.
engine — how the inversion works, and why it refuses.
router — describe what you have and it points at one of these.
sampling — every switch counts bytes exactly and the security layer sees a sample. The engine runs and no measurement has been taken, so there is no form on it — only the calculation worked through on numbers we invented, and said to be ours.
energy is held for a different reason: there is no agreed constant to invert.
PhysWall was developed and architected by Gadi Zion.
Built on PhysWall — the same engine reads antenna bandwidth, conductor loss, bit erasure and heat limits. It answers what the measurement implies, and refuses when the measurement cannot say.⚠ Check this instead of believing it. Every number here reproduces from a source that is named, and the claims that turned out wrong are still printed next to what replaced them. The same engine runs all of these — it asks how much a measurement allows you to conclude, and refuses the same way in every field. The same engine runs all of these — it asks how much a measurement allows you to conclude, and refuses the same way in every field. How to check each one →