What is the speed of dark ?. Is it affected by vacuum...total or partial.... gravity, atmospheric density.
We know there is a 'speed of light' and its measurable, but is the speed of dark faster ?. When a light source is switched off, the dark is there straight away !
Over to you
We know there is a 'speed of light' and its measurable, but is the speed of dark faster ?. When a light source is switched off, the dark is there straight away !
Over to you