Inquire about purchasing the book | Table of Contents | Annotated Bibliography | Class on Nature of Mind
These are excerpts and elaborations from my book "The Nature of Consciousness"
|
The Nature of
Spacetime According to Relativity, everything sits in spacetime. According
to Relativity, spacetime is not a substance. Sound waves require a medium to
travel in (and their speed depends on the medium), but light waves do not
require any medium (and it is always the same). According to Einstein, light travels in vacuum. There is no need for an ether. In 1981 the Canadian physicist William Unruh proved the stunning similarity between sound waves propagating in
moving fluid and light waves propagating in curved spacetime. In 1999 the US
physicist Ted Jacobson speculated that spacetime
might indeed be a substance, a kind of fluid (and be discrete at the
microscopic scale). Back to the beginning of the chapter "The New Physics" | Back to the index of all chapters |
| 
| 
| 
|
