His research interests include "all aspects of electron microscopy and analysis, semiconductors (particularly gallium nitride), ultra-high temperature aerospace materials and superconductors.

In doing so, Telford says, Humphreys has built an argument upon unsound premises which "does violence to the nature of the biblical texts, whose mixture of fact and fiction, tradition and redaction, history and myth all make the rigid application of the scientific tool of astronomy to their putative data a misconstrued enterprise.

"[11] In a 2017 paper written together with Graeme Waddington, Humphreys offered an astronomical explanation for the biblical story of the sun standing still over Gibeon during the Israelites' victorious battle against the Amorites (Joshua 10:12), namely an annular eclipse which occurred on 30 October 1207 BCE.

[12][non-primary source needed] Humphreys was elected in 1996 as a Fellow[13] of the Royal Academy of Engineering[13] He won the Institute of Physics Kelvin Medal and Prize in 2000.

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