Category Archives: Physics

Null-field radiationless sources: even more invisible than invisible?

I spend a lot of time talking about invisibility on this blog, as it is a subject near and dear to me: I did my PhD work, completed in 2001, on early historical forms of invisibility.  I like to tell … Continue reading

Posted in Invisibility, Optics | Leave a comment

#365papers, part 1!

At the beginning of this year, my friend Jacquelyn Gill (who blogs over at The Contemplative Mammoth) suggested an interesting resolution for academics like us: read at least one scientific paper a day for the entire year.  This has been … Continue reading

Posted in Physics | 3 Comments

The mystery of the magnetic train

This past week, thanks to Laughing Squid and other sources, a lot of people watched and were amazed by this simple demonstration of electromagnetism in action. It is billed as the “world’s simplest electric train,” and it is almost certainly … Continue reading

Posted in Physics, Physics demos | 7 Comments

Paris: City of lights and cosmic rays

This post of mine originally appeared on the Scientific American guest blog some time ago.  Considering it has been three years, and it’s always been one of my favorite pieces of writing, I thought it was time to “bring it … Continue reading

Posted in History of science, Physics | Leave a comment

Physics demonstrations: Faraday disk

I’m prepping a new course to teach this semester: undergraduate Electromagnetism II!  I’m trying to put together some nice simple demos to illustrate principles in the class, and I’ll blog some of those that work and are interesting. When Michael … Continue reading

Posted in Physics, Physics demos | 9 Comments

Cloaking from earthquakes?

There has been a lot of excitement among researchers about the science of invisibility over the past decade, and a variety of designs of invisibility cloaks have been suggested since the groundbreaking 2006 papers.  I’ve talked a lot about invisibility … Continue reading

Posted in Invisibility | 1 Comment

A Michael Faraday primer for COSMOS!

I’ve really been enjoying the new version of “Cosmos: A Spacetime Odyssey,” though this Sunday’s coming episode has me more excited than any other!  Titled “The Electric Boy,” the episode will focus on Michael Faraday (1791-1867), one of the most … Continue reading

Posted in History of science, Physics | 6 Comments