Category Archives: Physics

Illusion optics: the physics of making things look like other things!

The idea of optical cloaking, or more generally the concept of invisibility, has gone from science fiction trope to serious topic of physics research to subfield of optical science in its own right in a remarkably short period of time. … Continue reading →

Posted in Invisibility, Optics | 1 Comment

Invention of the “perfect” invisibility cloak?

In 2006, a number of researchers made international headlines with the announcement that they had laid the theoretical foundations for the construction of an “invisibility cloak,” a device that has been a staple of horror, fantasy and science fiction for … Continue reading →

Posted in Invisibility, Optics | 5 Comments

Making magnets speak: the Barkhausen effect

Occasionally I come across a demonstration of physics that is so simple to implement yet illustrates a phenomenon so profound that it almost takes my breath away.  I learned of one such demonstration recently, which requires only a handful of … Continue reading →

Posted in Physics | 6 Comments

How many uses for a nuclear weapon can YOU think of?

Ah, nuclear weapons!  Having grown up while the Cold War was still going strong, I can almost think about nuclear bombs with a sentimental eye — though the threat of nuclear terrorism is still a possibility, we’re much further away … Continue reading →

Posted in ... the Hell?, History of science, Physics | 30 Comments

Relativity: Ten minutes to Alpha Centauri?

Einstein’s special theory of relativity is arguably the most amazing physical theory ever conceived.  It utterly transformed our view of the universe, completely eradicating the view that space and time are independent quantities and giving us a new unified fabric … Continue reading →

Posted in Physics, Relativity | 11 Comments

Physics demonstrations: vortex cannon!

As I’ve said before, some of the best scientific demonstrations are things that can be put together with simple everyday components and exhibit surprising, even counter-intuitive, phenomena. One of my all-time favorite demonstrations is of this form!  All one needs … Continue reading →

Posted in Physics demos | 20 Comments

My 5-year blogiversary!

I almost missed it!  It turns out today, August 14th, 2012, is the 5-year anniversary of the founding of this blog! I would have in fact missed my “blogiversary” entirely if Jason Goldman of The Thoughtful Animal hadn’t tweeted congratulations … Continue reading →

Posted in Personal, Physics | 10 Comments

What’s the difference between “transparency” and “invisibility”?

In writing my previous post on The Murderer Invisible, I started thinking again about the relationship between something being “transparent” and something being truly “invisible”. Most of us can appreciate that, under the right circumstances, a transparent object like a … Continue reading →

Posted in Invisibility, Optics | 8 Comments

Philip Wylie’s The Murderer Invisible

If it were a mystery novel, The Murderer Invisible would be a failure right off the bat, as the plot twist is explained right there in the title!  As science fiction and horror, however, this 1931 book by Philip Wylie … Continue reading →

Posted in Invisibility, Science fiction | Leave a comment

My own little “Higgs”-related story

The physics community is in a near frenzy today with the expectation that, tomorrow at 9 am Geneva time, researchers at the Large Hadron Collider will announce the first significant evidence that they’ve discovered the “Higgs boson”, a fundamental particle … Continue reading →

Posted in Personal, Physics | 10 Comments