Radiance 1970-01-01
Radiant energy density 1970-01-01
Radiant exitance 1970-01-01
Radiant exposure 1970-01-01
Radiant flux 1970-01-01
Radiant intensity 1970-01-01
Radiative flux 1970-01-01
Radiosity (radiometry) 1970-01-01
Rate of penetration 1970-01-01
Reciprocal length 1970-01-01
Redshift 1970-01-01
Relative velocity 1970-01-01
Saturation velocity 1970-01-01
Signal-to-noise ratio (imaging) 1970-01-01
Single-particle spectrum 1970-01-01
Sound energy density 1970-01-01
Sound exposure 1970-01-01
Sound intensity 1970-01-01
Sound power 1970-01-01