Robert Henry Dicke (May 6 1916 – March 4 1997) was an American physicist, who made important contributions to the fields of astrophysics, atomic physics, cosmology and gravity.
Dicke narrowing occurs at relatively low pressures in the millimeter wave and microwave regions (where it is used in atomic clocks to improve precision).
RobertDicke is also responsible for developing the lock-in amplifier, which is an indispensable tool in the area of applied science and engineering.