A direct link to the above video is at http://www.youtube.com/watch?v=iM41wQM2yGk
Poll 79 - "In Einstein's view of the universe, gravity is pictured as a bending of the 'rubber sheet' of our spacetime. If our 'sheet' was a 2D plane, we'd see this bending as being through the 3rd dimension. This shows us gravity comes from the 5th dimension." Poll ended March 28 2011. 63.3% agreed, while 36.7% did not.
Interesting fact: what is the speed of gravity? Most physicists agree that it's equal to the speed of light. The thought experiment often used around this conundrum is "what would happen if the sun suddenly ceased to exist?". Since the light from the sun takes roughly eight and a half minutes to travel from the sun to the earth, this means it would take that length of time before we were plunged into darkness. But what about the gravitational attraction that keeps the Earth in orbit around the sun? It turns out that the answer is the same: if the sun suddenly disappeared, it would take roughly eight and a half minutes until the Earth would be flung out of the solar system, since the gravity of the sun would no longer be there to keep us orbiting.
Here's a link to a New Scientist article from 2003 about the first measurements taken that prove this concept. How does all this relate to my approach to visualizing the dimensions? Let's return yet again to a diagram I've been showing you this year which seems to sum all this up nicely:
Both the speed of light and the speed of gravity are illusions, created by the non-continuous nature of our reality. The jury's still out on whether gravitons really exist, but if they do they would be just like photons: from their perspective, past present, and future are simultaneous. But from our perspective, reality is divided at the fifth dimension into a series of "Now"s that are each one planck frame after another. This is why for us looking into the night sky filled with stars is looking into the past, and why it would take eight and a half minutes for disaster to strike if the sun's gravitational pull on planet Earth were to suddenly disappear.
According to my approach to visualizing the dimensions, our observed universe is an interference pattern, a holographic projection, created at the fifth dimension by the interaction of gravity and light.
For more about all this, read my blog entry The Holographic Universe, or click here for a collection of all my blog entries tagged with that topic. And enjoy the journey!
Next - More Dancing in the Dimensions