Answer
Physical science is a major area where Stokes made significant discoveries. His contributions to hydrodynamics, optics, and acoustics were groundbreaking. In hydrodynamics, he formulated the Navier-Stokes equations, which describe the motion of viscous fluids. In optics, he discovered the Stokes shift, a wavelength shift in fluorescence. In acoustics, he developed the Stokes theorem, which relates the circulation of a fluid to the vorticity.