In a paper from 1956, he predicted the phenomenon of isomeric shift, his calculations showing that it should be measurable by atomic spectroscopy.

Because of his intention to leave the Romanian communist regime, he was retrograded and denied an exit visa, being one of the first refuseniks of Central and Eastern Europe.

[3] Richard Weiner predicted the isomeric shift[2][4][5] which has found wide applications in many fields of physics.

[3] He supervised Ph.D. theses by Norbert Stelte, Michael Plümer, Udo Ornik, Fernando Navara, Bernhard Schlei, and Nelly Arbex, and had as postdoctoral collaborators among others Sibaji Raha, Apostolos Vourdas, Fred Pottag, and Leonid Razumov.

[12][13][14] He was asked for interviews, among others by the Frankfurter Rundschau[13] and was invited by Hessischer Rundfunk within the series Doppelkopf dedicated to renowned personalities.