Showing posts with label general relativity. Show all posts
Showing posts with label general relativity. Show all posts

Monday, 31 March 2014

PARALLEL WORLDS: THE SCIENCE OF ALTERNATIVE UNIVERSES AND OUR FUTURE IN THE COSMOS by MICHIO KAKU


A Book Review byANDY FLEMING


The remit of this book is staggering – it is no less than the coverage of the development of cosmology from its beginnings in antiquity right up to the theory of the multiverse, and the fact that our universe may be just one of an infinite number, each possessing physical forces and constants with different strengths to ours. The fact that the publication is targeted at the lay person (who may have little knowledge of cosmology and astronomy), makes the remit even more remarkable.

Kaku is one of the co-founders of a branch of String Theory and as such, one may start to read the book with the misconception that its contents will be biased towards the perspective of this particular theory. However, this is not the case, and the reader is firstly treated to a commendably objective history of astronomy, classical physics and the Copernican/Galilean Revolution, relativity, quantum mechanics, string theory, and the discovery of dark energy and dark matter, along with some extremely well written explanations and diagrams.

The overriding power of modern cosmology in explaining the universe – the marriage of the study of large scale objects such as galaxies groups, with that of very small scale subatomic particles is a growing theme throughout the book, and includes a superb explanation of the Cosmic Microwave Background radiation, and culminates in a discussion of the Standard Model, Inflation, and the five eras of the development of our universe.

Wednesday, 19 March 2014

RELATIVELY SPEAKING, THE TIME FOR RELATIVITY IS 01:00hrs UTC THURSDAY!

Nobel Prize winner Albert Einstein displaying his relativistic tongue later in life!
E=mc2. It's the name of the world’s most famous equation.

Everyone’s heard of it, and yet virtually no one has the faintest clue what it's about, or of its paramount importance to our civilisation, and come to think of it our existence at all.

I’m either very foolish or brave, but at 01:00hrs UTC/GMT on Thursday March 20 (tomorrow)/ 8.00pm Eastern, I’m going to endeavour to give a 101 crash course on Einstein’s (1905) scientific paper entitled On the Electrodynamics of Moving Bodies, more popularly known as his Theory of Special Relativity. It was derived from the equations of electromagnetism developed by James Clerk Maxwell in the nineteenth century.

On a positive note, Special Relativity is magnitudes easier than Einstein’s theory of gravity, or General Relativity!

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In the forthcoming programme I try to condense the essence of relativistic speeds as required for interstellar space travel down to just five minutes! And all in plain English lay person’s terms too, without the need for time dilation or Lorentz length contractions!

To learn how it may be possible to travel to the stars in no time at all using mass converted to pure energy with perhaps warp drives thrown in too listen to the next Podcast-UFO to be broadcast on ArtBell’s Dark Matter Radio Network at 01:00hrs UTC/GMT on Thursday March 20. Click the links or logo to listen! Wish me luck!

FEEL THE PB&J (PASSION, BEAUTY, AND JOY) OF THE COSMOS? SHARE IT!


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