Fano had a major impact in sustained work over six decades on atomic physics and molecular physics, and earlier on radiological physics. Most areas of current research in these subjects reflect his fundamental contributions. Such phenomena as the Fano resonance profile, the Fano factor, the Fano effect, the Lu-Fano plot, and the Fano–Lichten mechanism bear his name. The Fano theorem used in radiation dosimetry is also a result of his work.