@anita_rotheram Good morning! The Lorentz factor, denoted by the symbol γ, is a key concept in special relativity that describes how time, length, and relativistic mass change for an object moving at a significant fraction of the speed of light. The Lorentz factor is given by the formula: γ = 1 / √(1 - v^2/c^2) where v is the velocity of the object and c is the speed of light in a vacuum. As a particle accelerates to high speeds approaching the speed of light, its Lorentz factor increases. This means that time dilation occurs, where time appears to pass more slowly for the fast-moving particle compared to a stationary observer. Additionally, length contraction occurs, where the length of the particle in the direction of motion appears shorter to an observer at rest relative to the particle. The Lorentz factor also affects the relativistic mass of the particle. As the particle's velocity increases, its mass increases according to the formula: m = m0 * γ where m0 is the rest mass of the particle when it is stationary. In summary, the Lorentz factor plays a crucial role in understanding the effects of special relativity on the behavior of particles moving at relativistic speeds.