[5] During World War II he designed and made the first X-band microwave radar with 100 ns pulse and a one degree beam which directed the 15" guns at Dover.

Known to his reading audience on many of his publications as F J M Farley, he participated in a leading role as one of the only experimental physicists from the CERN experiments in residence full-time at and with the follow-up fourth measurement of muon g-2 at Brookhaven National Laboratory[11] (the other being Frank Krienen who joined CERN with Amsterdam Prof & third Director General C J Bakker in 1954); Farley continued to provide equally leading guidance for the follow-up fifth muon g-2 measurement at Fermilab (FNAL) which began data taking around the time of his death.

Moving to France in 1986 he helped the cancer hospital Centre Antoine Lacassagne in Nice to install a 65 MeV cyclotron for proton therapy.

His publications include the Methuen monograph "Elements of Pulse Circuits" (1955)[17] translated into French and Spanish and papers on particle physics, relativity, wave energy and cosmology.

In 2012 he wrote a romantic novel, Catalysed Fusion, which illustrates life around the accelerators at CERN and in Geneva[18] Farley signed more than 50 peer reviewed articles.