@Bone02943 Danke dir!
Ich stell das hier auch mal rein.
Habs gefunden: Edge Shadow (Volumetric Shadow) von
http://contrailscience.com/contrails-dark-lines-chemtrails/The most interesting type of contrail dark line is when the contrail is lined up with the sun. This produces a slice of shadow through the atmosphere that looks like a dark line when viewed edge-on. It is quite difficult to visualize what is going on since you have to think in three dimensions, and we are accustomed to thinking of shadows as being flat, since they are usually cast on surfaces. You are not seeing a thin dark shadow here, you are actually seeing a huge slab of very faint shadow, but it’s viewed from looking along the edge. Imagine you have a thick sheet of glass. Viewed head on, it’s transparent, but if you look at it from the edge, it seems a lot darker.
Schatten auf einer Linie mit Sonne, ja,
Flugzeug war wegen Sonne nicht zu sehen ... und dann sieht es halt aus, wie ein Strahl. Jedenfalls hab ich es so verstanden. Fein, fand ich klasse