Sections
Key Equations

# Key Equations

 speed of light $v=λfv=λf$ constant value for the speed of light
 elapsed time $Δt=γΔt0Δt=γΔt0$ relativistic factor $γ=11−u2c2γ=11−u2c2$ length contraction $L=L0γL=L0γ$ relativistic momentum $p=γmup=γmu$ relativistic energy $E=γmc2E=γmc2$ rest energy $E0=mc2E0=mc2$