Now on ScienceBlogs: A study that oversells massage therapy

ScienceBlogs Book Club: Inside the Outbreaks

Uncertain Principles

Thoughts on physics, politics, and pop culture, by a physics professor at a small liberal arts college, plus occasional conversations with his dog.

Search

Profile

sidebar_relativity_cover.jpg

sm_cover_draft_atom.jpgYou've read the blog, now try the books! How to Teach Physics to Your Dog is published by Scribner, and available wherever books are sold. How to Teach Relativity to Your Dog is published by Basic Books and will be available 2/28/2012, as foretold by the Maya.

"Uncertain Principles" features the miscellaneous ramblings of a physicist at a small liberal arts college. Physics, politics, pop culture, and occasional conversations with his dog.

Chad Orzel "Prof. Orzel gives the impression of an everyday guy who just happens to have a vast but hidden knowledge of physics." (anonymous student evaluation comment)

Emmy, the Queen of Niskayuna Emmy is a German Shepherd mix, and the Queen of Niskayuna. She likes treats, walks, chasing bunnies, and quantum physics.

Research Blogging Awards 2010 Winner!

Donors Choose challenge link

Recent Posts

Recent Comments

Greatest Hits

Chateau Steelypips

Blogroll

Scientists

Academics

Interesting People

Books

Punditry

Categories

Archives

« links for 2008-09-10 | Main | On-The-Road Baby Blogging »

Quantum Physics for Dogs Preview

Category: Book WritingPhysicsPhysics with Emmy
Posted on: September 10, 2008 10:30 AM, by Chad Orzel

We're out for a walk, when the dog spots a squirrel up ahead and takes off in pursuit. The squirrel flees into a yard and dodges around a small ornamental maple. Emmy doesn't alter her course in the slightest, and just before she slams into the tree, I pull her up short.

"What'd you do that for?" she asks, indignantly.

"What do you mean? You were about to run into a tree, and I stopped you."

"No I wasn't." She looks off after the squirrel, now safely up a bigger tree on the other side of the yard. "Because of quantum."

We start walking again. "OK, you're going to have to explain that," I say.

"Well, I have this plan," she says. "You know how when I chase the bunnies in the back yard, when I run to the right of the pond, they go left, and get away?"

"Yes."

"And when I run to the left of the pond, they go right, and get away?"

"Yes."

"Well, I've thought of a new way to run, so they can't escape."

"What, right through the middle of the pond?" It's only about eight inches deep and a couple of feet across.

"No, silly. I'm going to go both ways. I'll trap the bunnies between me."

[...]

Because I keep getting odd looks when I describe my book project at this meeting, I whipped up a pdf version of chapter one, so I can point people to it and give them a feel for what it's like. This is just the latest draft version of Chapter 1, saved as a PDF.

Important caveats: this is not a final version, and I'm putting it up here for demonstration purposes only. It's subject to change dramatically before it gets close to publication. It's also subject to disappearing entirely, if I decide to take it down so as not to spoil things. But for the moment, at least, here's the first chapter, on Particle-Wave Duality.

The snippet above is just a teaser from the dog dialogue that opens the chapter. It's followed by a longer explanation aimed at human readers, with occasional interjections from the dog. The conceit is that she's reading along as I go through the draft, and pointing out spots where I didn't provide enough information to answer all her questions.

I hope you enjoy it, and I hope this gives a clearer picture of what's going on than the elevator pitch that keeps getting me sideways looks...

Share on Facebook
Share on StumbleUpon
Share on Facebook

TrackBacks

TrackBack URL for this entry: http://scienceblogs.com/mt/pings/80792

Comments

1

Man, stupid memory error crap. Now I can't read it.

Posted by: IBY | September 10, 2008 7:05 PM

2

That's a wonderful chapter you posted. Thanks for sharing that with us readers. Even though I'm far enough in physics that I'm not really the target audience, I'll probably buy a copy to lend to people when they ask what I study. Oh, and because the dogtalk is incredibly cute.

Posted by: Chris Granade | September 10, 2008 7:24 PM

3

I was reading the beginning of the post and, being familiar with your conversations with your dog, was just about to suggest you write a book...

Posted by: Ian Durham | September 10, 2008 8:48 PM

4

Oh, nice. Now I know I'll buy several.

Posted by: The Ridger | September 10, 2008 9:45 PM

5

I managed to read the chapter, and it is really nice! I also like the dog dialogue. :) The way the dog puts quantum mechanic, if quantum mechanic effect would have existed in the macro level, it sounds awesome. Imagine, a dog refracting around the tree. ^_^

Posted by: IBY | September 12, 2008 9:38 PM

6

Dogs do refract around trees. Assuming that the tree's radius is roughly the same as the Compton wavelength of the dog = h/mc where
h is the Planck constant,
m is the dog's rest mass,
c is the speed of light.

Slightly rephrasing Wikipedia:

The Compton wavelength can be thought of as a fundamental limitation on measuring the position of a dog, taking quantum mechanics and special relativity into account. This depends on the mass m of the dog. To see this, note that we can measure the position of a dog by bouncing light off it -- but measuring the position accurately requires light of short wavelength. Light with a short wavelength consists of photons of high energy. If the energy of these photons exceeds mc^2, when one hits the dog whose position is being measured, the collision may have enough energy to create a new dog of the same type. This renders moot the question of the original dog's location.

Now, how fast can a rabbit run, compared to c? And what if your dog trees Schrodinger's cat?

Posted by: Jonathan Vos Post | September 13, 2008 3:10 AM

Post a Comment

(Email is required for authentication purposes only. On some blogs, comments are moderated for spam, so your comment may not appear immediately.)





ScienceBlogs

Search ScienceBlogs:

Go to:

Advertisement
Follow ScienceBlogs on Twitter

© 2006-2011 ScienceBlogs LLC. ScienceBlogs is a registered trademark of ScienceBlogs LLC. All rights reserved.