Easily calculate the relative velocity of an approaching light source with our online Doppler Effect Blue Shift Velocity Calculator. Input the observed wavelength and the emitted (rest) wavelength to instantly determine how fast an object is moving towards you based on its spectral shift. This tool is essential for astronomy and physics students.
Formula:
The formula for calculating the relative velocity (v) of an approaching object using the Doppler effect blue shift is:
v = c × (1 - (λobs / λemitted)2) / (1 + (λobs / λemitted)2)
Where:
v= Relative velocity of the approaching object (m/s)c= Speed of light (approximately 299,792,458 m/s)λobs= Observed wavelengthλemitted= Emitted (rest) wavelength
Important: Ensure both wavelengths (λobs and λemitted) are entered in the same units.