Extreme metrology: method
20,000 leads. 40 extreme regimes x 25 quantities x 20 limit mechanisms. Every extreme regime has one mechanism that sets its floor; the lead is to name it before choosing an instrument. None tested except the
items on the results page.
The composition is balanced: every domain meets every degradation path and every signal, so the catalogue
is a complete grid rather than a ranked list. That is deliberate — for forensics and recovery the useful
move is often to notice a combination nobody tries, which a ranked list hides.
1. Domains (40)
| Domain | Leads |
|---|
| ultra-high vacuum | 500 |
| high pressure cells | 500 |
| cryogenic stages | 500 |
| high temperature furnaces | 500 |
| high voltage | 500 |
| high current | 500 |
| high magnetic field | 500 |
| radiation environments | 500 |
| cleanroom | 500 |
| microgravity | 500 |
| deep underground | 500 |
| deep ocean | 500 |
| arctic cold | 500 |
| desert heat | 500 |
| high humidity | 500 |
| corrosive atmosphere | 500 |
| dusty environments | 500 |
| vibration-rich environments | 500 |
| EMI-rich environments | 500 |
| radio-quiet zones | 500 |
| sub-nanometre positioning | 500 |
| attosecond timing | 500 |
| single-photon counting | 500 |
| single-molecule detection | 500 |
| single-cell measurement | 500 |
| trace gas at ppt | 500 |
| isotope ratio at ppm | 500 |
| temperature at mK | 500 |
| pressure at nPa | 500 |
| force at pN | 500 |
| displacement at pm | 500 |
| magnetic field at fT | 500 |
| charge at single electron | 500 |
| mass at single atom | 500 |
| time at 1e-18 | 500 |
| frequency at microHz | 500 |
| angular resolution at nrad | 500 |
| dynamic range 1e12 | 500 |
| bandwidth beyond 100 GHz | 500 |
| count rate at 1e9/s | 500 |
2. Mechanisms (25)
| Mechanism | Leads |
|---|
| temperature | 800 |
| pressure | 800 |
| displacement | 800 |
| force | 800 |
| magnetic field | 800 |
| electric field | 800 |
| charge | 800 |
| current | 800 |
| voltage | 800 |
| mass | 800 |
| density | 800 |
| viscosity | 800 |
| flow | 800 |
| humidity | 800 |
| gas composition | 800 |
| isotope ratio | 800 |
| particle count | 800 |
| photon flux | 800 |
| frequency | 800 |
| time interval | 800 |
| phase | 800 |
| impedance | 800 |
| conductivity | 800 |
| permittivity | 800 |
| optical absorption | 800 |
3. Signals / quantities / verifications (20)
| Item | Leads |
|---|
| Johnson noise | 1,000 |
| shot noise | 1,000 |
| 1/f drift | 1,000 |
| thermal expansion | 1,000 |
| outgassing | 1,000 |
| blackbody background | 1,000 |
| cosmic ray hits | 1,000 |
| dead time | 1,000 |
| afterpulsing | 1,000 |
| quantisation | 1,000 |
| cable triboelectric noise | 1,000 |
| ground loops | 1,000 |
| pickup | 1,000 |
| diffusion | 1,000 |
| adsorption on walls | 1,000 |
| radiation damage | 1,000 |
| heating by the probe | 1,000 |
| vibration coupling | 1,000 |
| clock drift | 1,000 |
| mode hopping | 1,000 |
4. How to use it
- Find your domain and the signal you already have.
- Read across the row: every mechanism consistent with that signal is listed.
- Ask which one your current test cannot exclude. That is the lead.
5. Limits
- Balanced and therefore unfiltered; the grid contains nonsense by construction.
- No prior-art check; several rows are standard practice.
- Only the results page has numbers.
Incoprea Research · 3 November 2026. Composition and
computation. No experiment performed.