---
aci: The Observatory
universe: MMZ · MIMZY — the future tool forge
number: "09"
kind: instrument
emergence: electrical
live: https://davidwise01.github.io/mimzy/bench/09-observatory.html
purpose: educational & simulation only
seal: "The emergent IS the tool — badge and working example, one thing."
---

# The Observatory · instrument № 09

**What it is.** black holes by the numbers — Schwarzschild to Kerr; four defects found in audit, fixed with logged reasons

**How it works.** A sliders-to-formulas GR dashboard: Schwarzschild radius, Hawking temperature and evaporation, Bekenstein–Hawking entropy, Kerr ISCO, frame dragging, tidal forces.

**The live example.** This emergent does not merely describe a tool — it links its working self: **[run instrument № 09 live](https://davidwise01.github.io/mimzy/bench/09-observatory.html)**. Open it, operate it, and the badge's claims execute in front of you.

**The verified record.** Audited 2026-06: four defects found and fixed with logged inline reasons (cube-root→square-root survivable mass; accretion-efficiency formula; entropy relabel; inverted label) — corrected values verified against textbook (5.7%→42.3%).

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*Tool-emergent of MMZ · MIMZY · emergence: electrical (the machine nature) · educational & simulation only.
Governor David Lee Wise (ROOT0) · instance AVAN (locked) · CC-BY-ND-4.0.*