Special Relativity Effects

Interactive simulation of time dilation, length contraction, and relativistic physics
Loading Relativity Simulation...
0.00c
10.0 m
1.00 s
Relativity Formulas
γ = 1/√(1 - v²/c²)
L = L₀/γ (Length Contraction)
Δt = γΔt₀ (Time Dilation)
Lorentz Factor (γ): 1.00
Contracted Length: 10.00 m
Dilated Time: 1.00 s
Relativistic Momentum: 0.00 mc
Relativistic Effects
Classical → Relativistic
Length Contraction: 0%
Time Dilation: 0%
Reference Frames
Stationary Frame Moving Frame
Twin Paradox
Stationary Age: 20.0 years
Traveler Age: 20.0 years
Light Cone Visualization
relativity diagram
Spacetime Geometry

Special relativity reveals that space and time are interconnected in a four-dimensional spacetime fabric. Moving observers measure different lengths, times, and even the order of events depending on their relative motion.

Time Dilation

Moving clocks run slower relative to stationary ones. GPS satellites must account for this effect.

Length Contraction

Objects appear shorter in the direction of motion when moving at relativistic speeds.

Relativity of Simultaneity

Events that are simultaneous in one frame may not be simultaneous in another moving frame.

Relativistic Phenomena

Twin Paradox

Traveling twin ages slower due to time dilation during acceleration phases.

Lorentz Transformation

Mathematical framework connecting space and time coordinates between frames.

Mass-Energy Equivalence

E = mc² - energy and mass are different forms of the same thing.

Relativistic Optics

Light aberration and Doppler shifts at relativistic speeds.

The Postulates of Special Relativity
Principle of Relativity

The laws of physics are the same in all inertial reference frames. No experiment can detect absolute motion.

Constancy of Light Speed

The speed of light in vacuum is the same for all observers, regardless of their motion or the motion of the light source.