Interactive Laser Beam Expander Calculator How to Use This Calculator This calculator determines the properties of a laser beam after passing through a two-lens beam expander. Enter the Wavelength (λ)

Average Velocity Calculator v = (vi + vf) / 2 Solve for Average Velocity (v) Solve for Initial Velocity (vi) Solve for Final Velocity (vf) Average Velocity (v) m/s km/h

Interactive Gravity Calculator How to Use This Calculator This calculator determines the gravitational force between two objects using Newton's Law of Universal Gravitation. Enter the mass of the first object

Relativistic Velocity Addition Calculator Adding Velocities in Special Relativity In classical (Newtonian) physics, if you are on a train moving at velocity u and you throw a ball forward at