Tag Archive for: minkowski
![expandinguniverse](https://www.physicsforums.com/insights/wp-content/uploads/2018/01/expandinguniverse.png)
Explore Coordinate Dependent Statements in an Expanding Universe
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In this Insight we will discuss the general Robertson--Walker (RW) universe, in which a set of co-moving observers with proper time ##t## observe the universe…
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Relativity Variables: Velocity, Doppler-Bondi k, and Rapidity
Traditional presentations of special relativity place emphasis on "velocity", which of course has an important physical interpretation... carried over…
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Learn About Relativity on Rotated Graph Paper
This Insight is a follow-up to my earlier tutorial Insight (Spacetime Diagrams of Light Clocks).
I gave it a different name because I am placing more…
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Learn About Spacetime Diagrams of Light Clocks
We demonstrate a method for constructing spacetime diagrams for special relativity on graph paper that has been rotated by 45 degrees. Many quantitative…