if i remember, austria is an old, dis-used name for what is now Germany.
there is no optical light, there is just light and theres no other type of light unless you start talkling about energy saving lightbulbs compared to other types of light bulbs
the FAQ's answer to why the coriolus effect makes water flow in the opposite direction in toilets south of the equator:"you are mistaken."in other words, total denial of an obvious fact!
There is no evidence for an infinite Earth.
The Earth is infinite.