# Doppler effect for light Calculator

## Calculates the Doppler shift in wavelength of light. | |||

| |||

The faster the light source recedes, the redder its color becomes. |

Doppler effect for light

[1-5] /5 | Disp-Num |

- Purpose of use
- Calculation of doppler effect of star light and cosmic microwave background relative to spaceship in space travel at velocities approaching the speed of light (>0.7 c).

[1] 2017/09/08 23:37 Male / 40 years old level / A teacher / A researcher / Very /

- Purpose of use
- Helping me to understand how to calculate distances in light years?
- Comment/Request
- Solve the Doppler equation to determine the relative velocity as a percentage of the speed of light (c) of an object being tracked by an active radar transmitting at 10 terahertz and receiving signals at 9.5 Terahertz. Is the object moving toward the radar or away from the radar? How fast is the relative velocity in kilometers per second?"

[2] 2015/07/27 06:58 Female / 50 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- Used to prove a point involving a hypothetical relativistic asteroid headed towards earth.

[3] 2015/06/06 06:18 Male / 30 years old level / An office worker / A public employee / Very /

- Purpose of use
- teaching
- Comment/Request
- it is very useful to clear our doubt

[4] 2013/01/30 19:27 Male / 20 years old level / A teacher / A researcher / Very /

- Purpose of use
- want some worked examples on doppler effect.
- Comment/Request
- calculated example

[5] 2011/05/14 06:21 Male / Under 20 years old / A student / Very /

**To improve this 'Doppler effect for light Calculator', please fill in questionnaire.**

**The hyperlink to [Doppler effect for light]**