#field equations

[mudwerks]

(via Albert Einstein Autograph Manuscript Field Equations (unsigned) regarding "the new theory scalar conservation law". Autographs | Lot #47326 | Heritage Auctions)

[avant-writers-anonymous]

Congratulations - You Just Made It Through a Wormhole

Congratulations – You Just Made It Through a Wormhole

A wormhole is a speculative structure linking disparate points in spacetime, and is based on a special solution of the Einstein field equations. A wormhole can be visualized as a tunnel with two ends at separate points in spacetime. Wikipedia You may not have known it, but remember that funny feeling when things don’t appear as they seem? Colored lines of ruby red fade into black and…

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[bookloversofbath]

The Road to Reality: A Complete Guide to the Laws of the Universe (Roger Penrose)

The Road to Reality: A Complete Guide to the Laws of the Universe (Roger Penrose)

The Road to Reality: A Complete Guide to the Laws of the Universe (Roger Penrose) soon to be presented for sale on the terrific BookLovers of Bath web site!

Published: London: Jonathan Cape, 2004, Hardback in dust wrapper.

Contains: Diagrams;

From the cover: The Road to Realityis the most important and ambitious work of science for a generation. It provides nothing less than a comprehensive…

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[sciencequotes]

There was a blithe certainty that came from first comprehending the full Einstein field equations, arabesques of Greek letters clinging tenuously to the page, a gossamer web. They seemed insubstantial when you first saw them, a string of squiggles. Yet to follow the delicate tensors as they contracted, as the superscripts paired with subscripts, collapsing mathematically into concrete classical entities-- potential; mass; forces vectoring in a curved geometry-- that was a sublime experience. The iron fist of the real, inside the velvet glove of airy mathematics.

Gregory Benford