Notes on an elaborate dodge to get me out of having to do a map. NOT DONE YET!!
Notes- in Ghyll: light propegates *instantaniously*- there is no doppler effect?
... the length of material bodies changes, according as they are moving through the ether or across it, by an amount depending on the square of the ratio of their velocities to that of light.
Light and sound.
Distance = Rate * Time for straight lines, but for curves? So a map of Ghyll is a relativistic map...