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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)

The miscellaneous ramblings of a physicist at a small liberal arts college. Physics, politics, pop culture, and occasional conversations with his dog.

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Experiment:

What's Wrong with "Atom Laser"

Why the phrase "atom laser" bugs me, and why it's ironic given the "framing" argument here.

Pimp Me Old Papers

What pre-WWII paper should I read for the Skulls in the Stars challenge?

A Stable Heavy Element?

I see a lot of science stories that sound like kookery, but this is the first in a while that sounds like Golden Age science fiction.

What Do You Need to Make a Quantum Computer?

What features do you need to have in a system for it to be the basis for a practical quantum computer?

Nuclear Magnetic Resonance

Having brought in a huge new audience at the end of last week-- partly through the "framing"/"screechy monkeys" things, but mostly because my What Everyone Should Know About Science post hit the front page on Reddit-- I figured I should...

Semi-Comfortable Question: Personal Particle Accelerator

Back in the comments of one of the "Uncomfortable Question" threads, Matthew Jarpe asked (as background research for a new novel): If someone were to hand you the keys to your own particle accelerator and you could do any experiment...

Chain, Chain, Chain... Chain of Valves

Here's a picture of the gas-handling line leading to the discharge region seen in the plasma post: How many valves can you count in that picture? If you said "seven," give yourself a pat on the back. Here's the same...

Lab Porn: Plasma!

A couple more pretty pictures of the apparatus, to pass the time: This is the plasma discharge source that we use to make metastable atoms. We excite the gas using a RF coil (under the tinfoil) with a couple of...

Lab Porn: Doomsday!

Behold, the end of the world is at hand! They said I was mad-- mad!-- but now they'll pay... Well, ok, it's not actually a doomsday weapon. It's a shot of the main experiment chamber in my lab, taken in...

Uncomfortable Questions: Particle Physics

"Why do you try to hide your secret desire to be a high-energy particle physicist?"

Lab Visit Report: Unusual Lattices

New experiments with optical lattices that begin to explore structures beyond the simple cubic lattice.

Lab Visit Report: Four-Wave Mixing

The next lab visit experiments I want to talk about are really the epitome of what I called the "NIST Paradigm" in an earlier post. These are experiments on "four-wave mixing" done by Colin McCormick (who I TA'd in freshman...

Lab Visit Report: Francium

A proposal to search for new physics by doing precision spectroscopy of francium.

Lab Visit Report: Cold Plasmas

Another of the labs I visited while in DC was Steve Rolston's lab at the University of Maryland. This actually contains the apparatus I worked on as a graduate student, including many of the same quirky pieces of hardware-- Steve...

A User's Guide to Vacuum Pumps Part 2: Quiet Pumps

the second and final part of our survey of the wonderful world of vacuum pumps.

Lab Visit Report: Cavity QED

The Orozco lab at Maryland has some clever tricks for making atoms in superpositions of two different states.

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