Question

plz reply what is stokes law and velocity gradient and crystinia how dare u delete my message i am asking a relevant question

Answer 1

stokes law a law stating that in fluorescence the wavelength of the emitted radiation is longer than that of the radiation causing it. This is not true in all cases.

Stokes' law defines the drag force that exists between a sphere moving through a fluid with constant velocity. Viscosity is the resistance of a fluid to flow, and with increasing viscosity, the sphere's velocity drops.

for gradient it is just rate of change (with respect to distance here) And here is the definition. The difference in velocity between adjacent layers of the fluid is known as a velocity gradient and is given by v/x, where v is the velocity difference and x is the distance between the layers.

i hope it will helps you friend