# Doppler effect for light Calculator

## Calculates the Doppler shift in wavelength of light.

 The forward angle of light source θ is set as 180 (recede), 0 (approach), 90 (laterally).
 light source: Wavelength of light λ0 nm Velocity v0 km/s Forward angle θ degree 6dgt10dgt14dgt18dgt22dgt26dgt30dgt34dgt38dgt42dgt46dgt50dgt at observer: Wavelength of light λ nm Frequency of light ν GHz Velocity ratio to light v0/c ％
 The faster the light source recedes, the redder its color becomes.$\normal Doppler\ effect\ for\ light\\(1)\ \lambda=\lambda_0{\frac{\large 1-\frac{v}{c}cos\theta}{\large\sqrt{1-\frac{v^2}{c^2}}}\hspace{40}\nu=\nu_0{\frac{\large\sqrt{1-\frac{v^2}{c^2}}}{\large 1-\frac{v}{c}cos\theta}}}\\\vspace{5}(2)\ \lambda\nu=\lambda_0\nu_0=c=299792.458km/s$

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