Lünen is located in Germany (Regierungsbezirk Arnsberg, North Rhine-Westphalia) and time zone Europe/Berlin.
Places nearby are Eving, Bergkamen and Werne.
Cologne is 88 km away, Frankfurt am Main is 189 km away and Hamburg is 290 km away as the crow flies.
Distances from Lünen to the most important cities in Germany and the world.
51.6163400°
7.5287200°
Model of optics describing light as geometric rays
https://en.wikipedia.org/wiki/Geometrical_optics