## Einstein's Equations

A set of "tensor" equations Einstein devised to describe how mass warps spacetime. The set of equations may be written as $$G = 8 π T$$, where both $$G$$ and $$T$$ each represent a set of ten quantities. The $$G$$ quantities represent the warping of spacetime, while the $$T$$ quantities — the "Stress-Energy tensor" represent the mass.

## Inspiration

Come, you lost Atoms, to your Centre draw,
And be the Eternal Mirror that you saw:
Rays that have wander'd into Darkness wide,
Return and back into your Sun subside.

From Farid al-Din Attar's
twelfth-century masterpiece
The Conference of the Birds