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The Length Calculator in Relativistic Events will calculate the:

- Length of an object or event in the fixed system S when its length in the inertial system S' connected to the object or event is known

**Calculation Parameters:** All relativistic events are supposed to occur in vacuum; any motion is one-dimensional; all systems are inertial.

The Length of object in the system S considered at rest L is m [metre] |

Length of object in the system S considered at rest calculation |
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L = √1 - ∙ L'V^{2}/c^{2}L = √ 1 - ∙ ^{2}/ ^{2}L = √ 1 - ∙ /L = √ 1 - ∙ L = √ ∙ L = ∙ L = |

Length In Relativistic Events Calculator Input Values |

Length of object in the system S' connected to the object or event (L') m [metre] |

Speed of light in vacuum (c) m/s [metre per second] |

L = √**1 - ***V*^{2}*/**c*^{2} ∙ L'

The following Physics tutorials are provided within the Relativity section of our Free Physics Tutorials. Each Relativity tutorial includes detailed Relativity formula and example of how to calculate and resolve specific Relativity questions and problems. At the end of each Relativity tutorial you will find Relativity revision questions with a hidden answer that reveals when clicked. This allows you to learn about Relativity and test your knowledge of Physics by answering the test questions on Relativity.

- 18.1 - Relativity. Galilean Transformations. Einstein's Postulates and Newton's Laws
- 18.2 - Classical Principle of Relativity
- 18.3 - Space and Time in Einstein Theory of Relativity
- 18.4 - Relativistic Transformation of Velocity and the Relativistic Doppler Effect
- 18.5 - Lorentz Transformations
- 18.6 - Relativistic Dynamics. Mass, Impulse and Energy in Relativity

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