# Calculator: Demon Relativity

*In s03e01 ("Anne")*Demons are throwing unsuspecting teenagers into a demon-universe where

**time runs differently**. This means the

**Theory of Relativity**kicks in, stating that if any universe is time dilated, it should probably be moving, and experience length contraction. So which universe is moving? How fast? How much does the time dilation affect the length of objects in our universe compared to theirs?

Play around with the values below to find out!

Want to know what this is about?

**Read about Buffy's encounter with the theory of Relativity on my blog!**For every
in

**our world**,demons experience
in the

**demon world**## This means that

### x

### x

The calculation uses the Lorentz Transform to calculate time dilation and velocity of the moving universe.

For all calculations and deeper explanation, please see the full post about Buffy's encounter with Special Relativity

Did you spot an issue? A problem with the code, or the calculation? Do you have an idea I should add in to this calculator, or create any other calculators?

You can submit an "issue" on Github, contact me directly by sending me a note, or say hi on twitter (@mooeypoo)