Besides his career in economics, he performed experiments between 1952 and 1960 in the fields of gravitation, special relativity and electromagnetism, to investigate possible links between the fields.
Di samping karyanya dalam bidang ekonomi, Maurice Allais mengadakan percobaan antara tahun 1952-1960 di bidang gravitasi, teori relativitas khusus, dan elektromagnetisme, untuk meneliti hubungan antarketiga bidang itu.