Posts Tagged ‘Physics’


July 2, 2008

CERN’s Large Hadron Collider has been in the news a lot recently, and the undertone of fear is frequently present in the angle the stories take. I don’t really want to spread the worry, since it appears that there’s not much to be alarmed about, but I’ve been having some thoughts about alarmist tendencies in the media, and figured I’d share.

It’s no secret that more people are interested in reading a story that involves potential “doomsday” then some benign tale about eggheads doing their incomprehensible nerd research in some distant location. And I suppose fear and mystery can help scientific projects get funded, what with keeping the public interested and all. Still, making people worry unnecessarily does a disservice to them and can hinder the progress of knowledge.



Imagining the Tenth Dimension

June 22, 2008

I know this video has been out there for a little while now, but every time I see it I think about how great it is. It really illustrates higher these concepts well and makes you think about higher dimensions in a comprehensible way. It’s really dense, so I recommend pausing whenever you start to lose track, and taking a few minutes to really think about what he’s saying.

Tired Particle Interaction

June 14, 2008

A year ago, a very tired physicist friend and I were keeping ourselves awake and vaguely engaged in our work by discussing how the “tired particles” that seemed to be bombarding us must be interacting with our “thought particles”. I took the liberty of drawing one possible Feynman diagram of the interaction, and then promptly passed out. Fortunately, I found this MS Paint masterpiece again when I was cleaning out my computer before it was lost to the ages. Nobel Prize, here I come:

This theory is probably best applied to tiredness that occurs due to excessive academia.

I also took the opportunity to tap into the underused Hebrew alphabet, since the physics market on English and Greek characters is pretty saturated. Shin here, with the L subscript, is a “long-lasting thought”. It decays into two “short-lasting thoughts”, and the interaction is mediated by the “tired particle”, tau. My friend insisted that, as tiredness increases, her ability to sustain thoughts decreases, but she gets overwhelmed by many very short lasting though. I agree with the first part, but I think an abundance of short-lasting thoughts only comes to be via tiredness in particular circumstances, so this is not a general theory for the tired particle. The tired particle also leaves behind a “consciousness” particle, which carries with it consciousness of one’s own short-comings due to exhaustion.

More Magnetic Monopoles, With a Summery Hint of Maxwell’s Equations

June 9, 2008

It was pointed out to me that perhaps last time I went off too far into the theoretical setup and didn’t quite wrap up succinctly for you what exactly a magnetic monopole is. In short, a magnetic monopole would be a particle that carries magnetic charge, like how electrons and protons are carriers of electric charge. A bar magnet has two poles, and if you cut it in half, it still has two poles. If you keep cutting it in half and break it down as far as it will go, you will have a spinning electron which still has a “North” and a “South” pole. Whereas, in seeking the most simple possible configuration that produces an electric field, if you broke down a material as far as it would go you would have a single electron radiating a uniform electric field in all directions. This electric field wouldn’t pull objects toward it on one side and push objects away on the other like a dipole; it’s uniform in all directions (pictured here is the electric field of a positive point charge. An electron is a negative charge, so the direction of the field in reversed — pointing in toward the electron — but you get the idea). An electron is an example of an electric monopole. Similarly, a magnetic monopole, which is a magnetic charge, would have a uniform magnetic field radiating uniformly in all directions.

It’s not for the faint of heart, but for those willing to brave some math, I’ve got more for you on Maxwell’s equations, and how they would be symmetrical if a magnetic charge existed. Look at the pretty equations and skip to the summary just above the second set of equations if your eyes start glazing over. These are Maxwell’s equations for charges and electric and magnetic fields in a vacuum:


Magnetic Monopoles and Magnetism: The Alliteration Choice of Champions

June 8, 2008

Recently, I was reading this article about doomsday, law suits and the Large Hadron Collider. I admit that I’m intrigued and would kind of like to read a rigorous version of the theories behind these doomsday scenarios. It struck me how difficult a problem it is for courts to sort out such things, what with the high level of prerequisite knowledge a person must possess to understand enough about these concerns to make an informed decision about them. I suppose that’s what expert witnesses are for. Still, I think it is important to try to bridge the knowledge gap between scientific experts and folks with only as much science background as their learning institutions required them to learn to graduate in another field. Our society is pretty lacking in those bridges, I think, and I’m going to try to build more.

One of the fears in the article seems to be that the exotic and frighteningly named “magnetic monopoles”, if created, will be malignant and alter all matter they touch in upsetting ways, Ice-Nine style. Having just reinserted the topic of magnetic monopoles into my brain a couple months ago in my class on electricity and magnetism, I’m feeling the spirit to type about them on the internet.