• Source: Relativistic speed

Relativistic speed refers to speed at which relativistic effects become significant to the desired accuracy of measurement of the phenomenon being observed. Relativistic effects are those discrepancies between values calculated by models considering and not considering relativity. Related words are velocity, rapidity, and celerity which is proper velocity. Speed is a scalar, being the magnitude of the velocity vector which in relativity is the four-velocity and in three-dimension Euclidean space a three-velocity. Speed is empirically measured as average speed, although current devices in common use can estimate speed over very small intervals and closely approximate instantaneous speed. Non-relativistic discrepancies include cosine error which occurs in speed detection devices when only one scalar component of the three-velocity is measured and the Doppler effect which may affect observations of wavelength and frequency. Relativistic effects are highly non-linear and for everyday purposes are insignificant because the Newtonian model closely approximates the relativity model. In special relativity the Lorentz factor is a measure of time dilation, length contraction and the relativistic mass increase of a moving object.




See also


Lorentz factor
Relative velocity
Relativistic beaming
Relativistic jet
Relativistic mass
Relativistic particle
Relativistic plasma
Relativistic wave equations
Special relativity
Ultrarelativistic limit




References

Kata Kunci Pencarian:

• Kelajuan gravitasi
• Laju cahaya
• Hukum gerak Newton
• Distribusi Maxwell-Boltzmann
• Metaloid
• Relativistic speed
• Relativistic rocket
• Special relativity
• Relativistic quantum chemistry
• Relativistic Doppler effect
• Maxwell–Boltzmann distribution
• Mass in special relativity
• Relativistic beaming
• Propellant
• Cyclotron