# Doppler effect for light Calculator

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

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

Doppler effect for light

[1-10] /10 | Disp-Num |

- Purpose of use
- curiosity
- Comment/Request
- I should have been sleeping now, but decided to calculate how fast i need to approach a traffic in order to see the red light as green

[1] 2022/02/05 08:38 20 years old level / Self-employed people / Very /

- Purpose of use
- Information for writing a novel

[2] 2021/12/01 12:07 Under 20 years old / High-school/ University/ Grad student / Very /

- Purpose of use
- Curious about this topic in realtion to Special Relativity. I wish your calulator could calulate rhe Red as well as Blue shifts at the same time.

[3] 2021/05/21 22:26 60 years old level or over / A teacher / A researcher / Useful /

- Purpose of use
- Nicely done page. Thanks! Figuring the doppler shift from an orbiting satellite.

[4] 2020/10/09 20:23 50 years old level / An engineer / Very /

- Purpose of use
- Spacecraft doppler shift calculation

[5] 2019/05/06 08:26 30 years old level / An engineer / Very /

- 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).

[6] 2017/09/08 14:37 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?"

[7] 2015/07/26 21:58 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.

[8] 2015/06/05 21:18 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

[9] 2013/01/30 10:27 20 years old level / A teacher / A researcher / Very /

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

[10] 2011/05/13 21:21 Under 20 years old / A student / Very /

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