🌙 Moonlit Graveyard Walk: Lantern Light, Fog and Echoes

A cosy, never-scary night walk in a low-poly moonlit graveyard with a hand lantern: measure moonlight and lamp light in lux, watch radiation fog thicken as the air cools to its dew point, whistle for echoes from the old church on the hill, and follow five friendly wisps. Real equations, a field notebook and independent checks.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install