# Special relativity (Lorentz contraction) Calculator

## Calculates the length contraction of a body moving with some relative velocity with respect to the observer. | ||

- Purpose of use
- Answer somebody's query about space travel.
- Comment/Request
- Form of the query was 'What velocity is required to achieve a particular time dilation', which I could answer by inputting different values of velocity; but could do quicker if the app allowed me to key in the dilation factor to get the velocity.

[1] 2021/08/05 12:47 60 years old level or over / A retired person / Very /

- Purpose of use
- Calculating peak time dilation and maximum length contraction for an observer on a starship travelling to tau ceti (11.9 lyr) under 1g of constant acceleration/deceleration
- Comment/Request
- Great calculator.

[2] 2020/02/21 04:28 40 years old level / A retired person / Very /

- Purpose of use
- To calculate the angle contraction of the end mirrors of a Michelson Interferometer to help correct the flaws in Hicks' analysis of the expected fringe shifts in MMX type interferometers. Hicks correctly points out that there is angle contraction of mirrors in the horizontal plane, & mentions a possible effect in the vertical plane, but severely underestimates the effect(s)(ie on the fringe shift signal).

[3] 2020/01/29 23:42 60 years old level or over / An engineer / Very /

- Purpose of use
- Low velocity length contraction calculations. Pocket calculator cannot deal with such small numbers.

[4] 2019/10/26 10:40 20 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- I'm trying to create a formula for virtual negative mass at lagrangian points.
- Comment/Request
- Though this is a useful calculator I would also like to see a gravitational time dilation calculator

[5] 2019/02/01 17:40 Under 20 years old / High-school/ University/ Grad student / A little /

- Purpose of use
- Making number crunching easier on the mind

[6] 2018/09/14 04:26 Under 20 years old / High-school/ University/ Grad student / Very /

- Purpose of use
- Comparing answers to work questions

[7] 2018/09/14 04:24 Under 20 years old / High-school/ University/ Grad student / Very /

- Purpose of use
- To find hard mathematical data to support Fermi''s Paradox. Also to have hard data to throw back at UFO enthusiasts.
- Comment/Request
- None.

[8] 2018/05/12 00:25 50 years old level / Self-employed people / Very /

- Purpose of use
- school

[9] 2018/03/25 23:11 Under 20 years old / High-school/ University/ Grad student / Useful /

- Purpose of use
- Studies
- Bug report
- A spacecraft is moving with the speed of 10percent that of light .what is the fractional change in length due to the lorentz contraction?

[10] 2018/02/15 22:08 - / - / Very /

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