Wednesday, February 28, 2007

Wave/Particle Dual Post

BBC News (once again) reports on construction of the Large Hadron Collider (LHC) at CERN. This image (with little people for scale) is a 2,000 ton piece of the Compact Muon Solenoid that may help find the elusive Higgs boson. (That's like 20002 pounds - wait, what's a pound again?) After the LHC comes online, you'll have to take PH301 all over again!

Rayguns in Georgia? Here's an article from the Seattle times. Let's go down several orders of magnitude, to EM waves with millimeter-size wavelength. Unlike nanometer-wavelength visible light, which bounces off our clothes and skin, and unlike microwaves used for cooking (wavelength ~ 12cm), which cook flesh well below the surface, these millimeter waves only effect the surface of the skin, giving a burning sensation. So the militaty has turned this effect into a non-lethal weapon - a raygun if you will, though they call it an Active Denial System (ADS). Of course, it's quite controversial, because non-lethal isn't the same as harmless.

1 comment:

BlueMarble said...

I came up with another thing for the Physics Day! We can freeze shaving creme cans and cut them open and show how much is really inside