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Astronomycast Episode 252 from Monday, February 13, 2012.

Heisenberg's uncertainty principle.

Welcome to Astronomycast, our weekly facts-based journey through the cosmos, where we help you understand not only what we know, but how we know what we know.

My name is Fraser Kane, I'm the publisher of University Day, and with me is Dr. Pamela Gay, a professor at Southern Illinois University.

A Pamela, how are you doing?

I'm doing well, how are you doing, Fraser?

I'm doing really well.

I'm working back into our schedule, trying to catch up, actually recording this a little bit early than the actual Monday, so I think we're getting back on track.

Again, if you don't know, for those of you who only listen to the podcast, we record these now as live Google Plus Hangouts every Monday at noon, Pacific, three Eastern, and eight o'clock London time.

So if you want, you can join us live, you can sort of jump into the podcast at the end and ask us questions, and we hang out for about half an hour after we record the audience.

It's a pretty cool, pretty fun, really neat way to connect with us, and you guys get to pick Pamela's brains to ask for any question, and see just how super smart she is.

Any astronomy question?

Any question you like, whatever, you know, the more math, the better.

All right, well let's get on with today's show.

So quantum theory is plenty strange, but one of the strangest discoveries is the realization that there's a limit to how much you can measure at any one time.

This was famously described by Werner Heisenberg with his uncertainty principle.

How you can never know both the position and the motion of a particle at the scene.

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