If you broaden the definition of film noir to any highly stylised, melodramatic film, usually black and white, with a hardboiled element, many might squeeze in under that umbrella – from Casablanca to real noir, as in The Third Man. Tarzan would not.
Rathbone’s Holmes might fit into the genre or at least add its badge, 50s SF/creature movies, often better as B movies, with hammier acting.
I like noire as a matinée more than as an evening show, so here’s one which might fit this non-genre:
The maximum range of astronomy by radar is very limited, and is confined to the Solar System. This is because the signal strength drops off very steeply with distance to the target, the small fraction of incident flux that is reflected by the target, and the limited strength of transmitters.
The distance to which the radar can detect an object is proportional to the square root of the object’s size, due to the one-over-distance-to-the-fourth dependence of echo strength.