BOOK REVIEW: Einstein’s Dreams by Alan Lightman

Einstein's DreamsEinstein’s Dreams by Alan Lightman

My rating: 4 of 5 stars

Amazon page

One might think that a novel written by a physicist would make for dreadful reading–and most of the time one would probably be correct. However, Lightman’s Einstein’s Dreams is a fascinating read. The arc of the book–what makes it a novel rather than a series of short scenes–is conveyed by a prologue, a few interludes, and an epilogue. These brief sections show an Albert Einstein as he went about life trying to work out his special theory of relativity.

In between the interludes are a series of written sketches that depict dreams that might have been had by Albert Einstein between April 14th and June 28th of 1905. Each of these dreams depicts an alternative universe in which time is not experienced as we experience it: that is, as an inexorably flowing river with a clearly defined arrow. In one dream, time is circular. In another, a lifetime is compressed into a day. In another, there is no flow of time; the world is a snapshot. In another, immortality is the norm. In the latter dreams of the book, we see a convergence on time as we know it–though in dream-like abstraction.

This short book is both creative and well-written. Lightman excels at creating scene through vivid description. His approach to structure is unique.

One thing that might have improved the book is if the author had been a little bolder. Lightman feels the need to explicitly state what is going on in each dream world. However, his description is strong enough that such discussion is generally anti-climactic–one already knows how time is working (or not working) in a given universe before the author states it explicitly. Thus, these explicit descriptions succeed only in taking one out of the dream.

View all my reviews

TODAY’S RANT: Hyper-relativistic Mathematical Zones: or, When Will my Car be Done?

Albert Einstein theorized that distance and time are relative depending upon one’s speed. In everyday life we rarely notice this because of a little-known tenet of General Relativity that says, “Whenever one attempts to approach the speed  of light, there will be an octogenarian in the left-hand lane.”

Since the early 20th century, physicists have thought they were this close (author holds up hand with thumb and index fingers about 3/4 of a centimeter apart) to being able to explain the whole shebang. Figure out why very small things behave differently from very big things, and, Bob’s your uncle, we’ve got your Eureka moment.

I, however, think physicists will find that they have yet another hurdle to solve (mixed metaphor intended, smartypants.) This has to do with certain zones in which conventional measurements of space and time break down even when one is only moving at the speed the planet is revolving (24 hours/day, I think, no that sounds wrong somehow.)

I don’t think physics is quite prepared to explain why an hour in a mechanic’s shop is equal to about 4.33 hours on the outside. We’ve all experienced the inverted time-dilation effect of the Department of Motor Vehicles. According to Einsteinian relativity, time slows as one approaches the speed of light. However, time slows even more when one is in the slowest state of movement possible, the DMV line.

I won’t go into the distance contraction effects localized to the crotch region of men who wear wife-beaters and gold hood ornaments around their necks.

Are these just zones in which bistromathics trump mathematics (Sorry only readers of Douglas Adams’s Life, the Universe, and Everything will get that reference.)

Any Unified Field Theory must explain these phenomenon before I can accept it.

BOOK REVIEW: Physics of the Impossible by Michio Kaku

Physics of the Impossible: A Scientific Exploration into the World of Phasers, Force Fields, Teleportation, and Time TravelPhysics of the Impossible: A Scientific Exploration into the World of Phasers, Force Fields, Teleportation, and Time Travel by Michio Kaku

My rating: 5 of 5 stars

Michio Kaku is the master of pop physics writing. While you may find names like Brian Greene or Neil Degrasse Tyson more recognizable, if you haven’t read any of Kaku’s work, this is a good one with which to start.

This book examines the possibility (or lack thereof) of many technologies and scientific concepts prevalent in science fiction.

Why spend time reading about things impossible? It turns out that one’s definition of “impossible” matters greatly. Kaku divides the world of impossible into three classes. The first, and largest class by far, are those technologies that are impossible given today’s capabilities, but aren’t prohibited by the known laws of physics. This class includes technologies that one can readily imagine such as: robots, starships, and phasers. However, it also includes developments that one might think are firmly in the realm of sci-fi, such as: teleportation, telepathy, force fields, and psychokinesis.

Class II impossibilities are those that look impossible now, but which may prove possible as our knowledge increases. They include faster than light travel, time travel, and the existence of parallel universes. The first two require uncovering loopholes in prevailing Einsteinian paradigm. The second also begs the question of why we don’t have time tourists.

Class III impossibilities are those that violate the known, well-established laws of physics. Kaku only puts two items in this bin, perpetual motion and precognition.

Kaku’s book discusses a fascinating topic in a highly readable format and using good science.

View all my reviews