Stokes Law Calculator is a physics/math calculator used to find the Acceleration of Gravity, Medium Viscosity, Medium Density, Particle Density, Particle Diameter, or Terminal Velocity quickly and easily. Stokes Law describes the steady flow of a continuous stream of fluid that is incompressible and has negligible viscosity. It serves as the basis of the falling-sphere viscometer. In the viscometer, the fluid remains stationary in a vertical glass tube. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as references. - Supports up to 16 decimal places. - Supports various units for each input. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. Stoke's law states that at low velocities, the frictional force on a spherical body moving through a fluid at constant velocity is equal to 6π times the product of the velocity, the fluid viscosity, and the radius of the sphere. In short, the motion of a sphere through a viscous fluid is directly proportional to the velocity and radius of the sphere, as well as the viscosity of the fluid. Formulas: Fall or Settling Velocity: Vt = gd² (ρp - ρm) / 18μ Acceleration of Gravity: g = 18μVt / d²(ρp - ρm) Particle Diameter: d = √(18μVt / g(ρp - ρm)) Density of Medium: ρm = ρp - 18μVt / d² Particle Density: ρp = 18μVt / d² + ρm Viscosity of Medium: μ = gd²(ρp - ρm) / 18Vt Where: Vt = Fall or Settling Velocity, g = Acceleration of Gravity, d = Particle Diameter, ρm = Density of Medium, ρp = Particle Density, μ = Viscosity of Medium. Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.