Galilean moons century when other inner moons were discovered, and Marius' names became widely used. Galileo was able to develop a method of determining longitude based on the timing of the orbits of the Galilean moons. The times of the eclipses of the moons could be precisely calculated in advance, and compared with local observations on land or on ship to determine the local time and hence longitude. The main problem with the technique was that it was difficult to observe the Galilean moons through a telescope on a moving ship; a problem that Galileo tried to solve with the invention of
Newtonian fluid liquid, and not diagonal components – turbulence eddy viscosity. The following equation illustrates the relation between shear rate and shear stress: formula_29 Where: 𝜏 = Shear stress µ = Viscosity dV/dy = Shear rate If viscosity is constant, the fluid is Newtonian.Power Law Model The Power Law Model is used to display the behavior of Newtonian and Non-Newtonian Fluids and measures shear stress as a function of strain rate. formula_30 formula_31= Absolute Value of the Strain Rate to the (n-1) power formula_32 = Velocity Gradient n = power law index ( n =1 for Newtonian Fluids), typically n = 0.5