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Download e-book for iPad: A User's Guide to the Universe: Surviving the Perils of by Dave Goldberg, Jeff Blomquist

By Dave Goldberg, Jeff Blomquist

ISBN-10: 0470496517

ISBN-13: 9780470496510

Solutions to science's so much enduring questions from "Can I holiday the light-speed barrier like on Star Trek?" and "Is there lifestyles on different planets?" to "What is empty area made of?"

this is often an critical consultant to physics that provides readers an outline of the most well-liked physics issues written in an available, irreverent, and fascinating demeanour whereas nonetheless conserving a tone of wry skepticism. Even the amateur can be capable of stick with alongside, because the subject matters are addressed utilizing undeniable English and (almost) no equations. Veterans of well known physics also will locate their nagging questions addressed, like even if the universe can extend speedier than gentle, and for that topic, what the universe is increasing into besides.

* offers a one-stop journey of the entire immense questions that trap the general public mind's eye together with string conception, quantum mechanics, parallel universes, and the start of time

* Explains severe technological know-how in an exciting, conversational, and easy-to-understand method

* contains dozens of delightfully groan-worthy cartoons that designate every little thing from specific relativity to darkish topic

 Filled with attention-grabbing info and insights, this booklet will either deepen and rework your figuring out of the universe.

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Extra info for A User's Guide to the Universe: Surviving the Perils of Black Holes, Time Paradoxes, and Quantum Uncertainty

Example text

Reflection is very easily described by the particle view of light, and by way of analogy, consider a photon as a ball. If you were anything like us, the closest you ever got to “playing catch with the guys” was tossing a tennis ball at the garage door. One flaccid lob, a loud thud, and an awkward swat later, the ball was back in your hand. ” On the other hand, it may be that if you concentrate really hard, all you hear is the theme song to Knight Rider. That’s fine, though; just take our word for it.

All of that potential and uncertainty collapsed into a single state of what you’ve actually done with your life—one path. Is there some way I can blame quantum mechanics for all those times I lose things? Having introduced the basic idea of quantum weirdness, we’re going to spend a few moments talking about some seemingly impossible repercussions—the ones where you’re most likely to think there’s some sort of trick or oversimplification. When we shine a beam of electrons at our double-slit experiment, we don’t know which slit a particle goes through.

What’s more, by our actions, the photon somehow chooses to go through one slit or the other. It’s deeply spooky to be able to affect reality in such a profound way, especially since the photon seems to make the choice retroactively. Before we forced the photon to behave classically (by removing the screen), quantum mechanics—and Wheeler—says that there was no way we could have predicted which hole the photon would have gone through. We can, in fact, change the quantum world after some event should have occurred.

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A User's Guide to the Universe: Surviving the Perils of Black Holes, Time Paradoxes, and Quantum Uncertainty by Dave Goldberg, Jeff Blomquist


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