Their work appeared to contradict the established beliefs about quantum interference, and he and Brown received the Eddington Medal of the Royal Astronomical Society for it in 1968.
His work in this area was included in the famous "five foot shelf"—a series of reference books in electronic engineering compiled at MIT that was the circuit designer's bible in the 1950s.
Twiss decided to pursue the Michelson alternative at the National Physical Laboratory at Teddington in the UK.
When the Royal Observatory, Edinburgh established its outstation at Monte Porzio Catone just south of Rome, Twiss decided to move his Michelson interferometer there.
In the mid-1970s Twiss's non-scientific interests gradually took over and he effectively retired from active involvement in science.
He is mentioned in the book "Boffin : A Personal Story of the Early Days of Radar, Radio Astronomy and Quantum Optics" ISBN 0-7503-0130-9, by Hanbury Brown He was awarded the Albert A. Michelson Medal of the Franklin Institute in 1982, jointly with Robert Hanbury Brown.