Category Archives: Physics

Fabry, Perot, and their wonderful interferometer (1897, 1899)

This is my entry for the fifth edition of The Giant’s Shoulders, to be held at Podblack Blog on November 15th. By the late 1800s, physicists had begun a serious study of the structure of the atom.  The best tool … Continue reading

Posted in History of science, Optics, Physics | 12 Comments

Physics, guitars and pitch harmonics

One of the fun parts about being a scientist is running across “day-to-day” phenomena which can be understood much better using a little bit of one’s knowledge.  One of these I’ve had bouncing around in my head for a while: … Continue reading

Posted in Physics | 19 Comments

“Interference between different photons never occurs:” Not! (1963)

Note: This post is my contribution to the third edition of The Giant’s Shoulders, a carnival of blog posts on classic science papers. One of the most famous statements concerning quantum mechanics, as it relates to the light particles known … Continue reading

Posted in History of science, Optics, Physics | 26 Comments

New ‘cloaking’ results? Not really, but interesting anyway

About a week ago, I reported on another ‘teaser’ in the media about ‘optical cloaks’, hypothetical devices which would in principle make objects contained in their core completely invisible. Such devices have gotten a lot of attention, both scientifically and … Continue reading

Posted in Invisibility, Optics, Physics | 8 Comments

The cloaking craze: A look at the original papers

As I noted a couple of days ago, apparently there has been another significant experimental breakthrough in the development of dielectric cloaking devices. Researchers at UC Berkeley were responsible, though it is a little unclear what exactly the breakthrough is. … Continue reading

Posted in Invisibility, Optics, Physics | 15 Comments

Another ‘invisibility cloak’ teaser!

Via several sources (Times Online, via HuffPost and AP, via Pharyngula), I see that there’s another pending high-profile release concerning ‘invisibility cloaks’. Though the physics behind them is accurate, the media is of course pushing rather hyperbolic headlines again: “Science … Continue reading

Posted in Invisibility, Science news | Leave a comment

The discovery, rediscovery, and re-rediscovery of computed tomography

Note: This post is my contribution to The Giant’s Shoulders #2, to be held at The Lay Scientist. I thought I’d cover something a little more recent than my previous entries to the classic paper carnival; in truth, I need … Continue reading

Posted in History of science, Physics | 13 Comments

Freezing images in an atomic vapor!

I thought I’d step out of my comfort zone and specific field of expertise for once and do a post on some interesting quantum optics. In a June issue of Physical Review Letters, an Israeli research group experimentally demonstrated the … Continue reading

Posted in Optics, Physics | 5 Comments

Einstein vs. Whittaker, with Born in the middle

My former thesis advisor is the greatest! I recently helped him update an electronic compilation of his collected papers, but refused any payment for my services. He ignored me and sent me a copy of The Born-Einstein Letters, a compilation … Continue reading

Posted in History of science, Physics, Relativity | 9 Comments

What a drag: Arago’s Experiment (1810)

Note: This post is my contribution to the first-ever edition of The Giant’s Shoulders, a new blog event compiling posts concerning classic science papers. I’ve been meaning to get back to my series of posts on relativity, but things have … Continue reading

Posted in History of science, Optics, Physics, Relativity | 20 Comments