After being released from a brief internment in a British camp, he joined a kibbutz for a year and a half and later moved to Haifa, where his sister lived.
One of his first challenges was to build the Technion's first oscilloscope, for which he claimed the beam swept right-to-left, in a nod to its Hebrew heritage.
In addition to those two occupations, He worked for the Haganah as electronics expert-one of his tasks dealt with tapping the direct line between the British High Commissioner in Jerusalem and 10 Downing Street in London and building Descrambler device.
With the encouragement of Ollendorff (promising that a US organization called "The Friends of the Technion" would support Feher's studies), he applied for 50 universities in the US, and only two were willing to accept him.
[6] His main research was to uncover the basic mechanisms for how plants and bacteria use photosynthesis to convert light into chemical energy.
In 2006/07, he was awarded the Wolf Prize in Chemistry along with Ada Yonath of Weizmann Institute of Science in Rehovot, Israel for "ingenious structural discoveries of the ribosomal machinery of peptide-bond formation and the light-driven primary processes in photosynthesis".