The shortest ground wavelength the presentational field carries, meters.
A meter, because that is the spacing the mesh is asked to reach and a feature
needs two samples to exist. It is what surfaceDetailFloor walks down to and
therefore what sets how many patches a landing generates: measured, dropping
it from the canonical eight to one moves the floor by one to four levels
across the zoo — and by ten on Europa, which is the shape of the answer
rather than an outlier, because a body young deleted the canonical crater
population from had nothing at any scale below its ice bands.
Below it the ground is per-pixel in the material and nothing meshes it.
universe/src/sketch.ts:579