Copasetic Flow

I tried, I tried really really hard not to write this post. I failed though, so here goes.  A few months ago I came across what looked like it should be a great little column about physics, "Cocktail Physics" by +Jennifer Ouellette . Reading one of her week in review articles , I was led to a couple of interesting stories before I came across one that looked great! I enjoy a good science yarn so I was excited to see a headline: " ...Mark Chu-Carroll took on new dimensions of crackpottery :... " I was shocked to wind up reading an extremely mean spirited article written about another internet posting, (one very few people would have ever seen otherwise), that waxed philosophical and speculatively about special relativity, (think Einstein meets karma and self-actualization) . Worst of all, the author, Mark Chu-Carroll, a computer scientist didn't have a necessarily complete grasp on the science himself. So, that was a bummer. I wrote up a little article a...

I came across this picture of Sierra Blanca near Ruidoso, NM last night.  The peak of Sierra Blanca sits at 11,981 feet, above sea level more than 4,000 feet above Alto, NM where the picture was taken.  As a kid, growing up in Ruidoso, we'd say things like, "Wow, that cloud just hunkered down on top of the mountain." just assuming the cloud had come from somewhere else.  Looking at how the cloud above seemed to be literally streaming into the peak, I wondered if there was some kind of sciencey correlation between clouds and mountains.  I found the answer in an article from the February, 1901 issue of "The School World" by George Chisholm [1] that explained mountains actually help to form clouds, not attract them from afar. Here's how it works.  Wind carries air saturated with water vapor into the mountain where it is forced up the slope.  As the air rises it expands due the lower air pressure, and as it expands, it becomes colder. ...

In a previous life, you're an electronics engineer who was rushed out to Grenoble, France to visit with ST Microelectronics.  Hopping off the plane in Lyon, you make the quick two hour drive southeast.  Realizing that you smell a bit funky after 8 hours on a plane, you drop into the local H&M, then pop into a pay toilet/changing room and pop out ready to engineer!   Six hours later, you finally emerge and start to look for places to stay, but to your  dismay, everywhere in Grenoble is fully booked.  You pull out your map and notice that there are mountains to the north.  Why not commute to one of the little towns up there?  You pull out the laptop and start calling hotels in each little town up the road until you finally find an available room in Saint-Pierre-de-Chartreuse. The room is only $60 a night, the travel folks at the home office should be pleased!  It's dark already when you head out of town on the D512.  You wind your way thr...

And now, in the ongoing series inspired by the Fischbach article on the seasonal variation of radioactive decay rates, a few more notes on beta decays.  Today, will be about beta decay and parity, (aka mirror image symmetry), violation.  In 1957[5], C.N. Yang and T.D. Lee performed a survey of the existing experiments involving beta decay and found that there was no experimental evidence showing that beta decays maintained mirror symmetry, (parity), something that had been simply assumed until then because there was experimental evidence that electromagnetic and strong interactions did maintain mirror symmetry.  A short time after Yang and Lee's report, Wu[6] completed an experiment that showed that in fact, electrons emitted from a polarized Cobalt 60 source violated mirror image symmetry.  The article following Dr. Wu's by Garwin et al[7]. showed that muon decay, (another weak force interaction), also violated mirror image symmetry. Vectors and Axial Vectors an...

Good Morning!  While drinking my coffee after getting a full night's sleep, (hooray for happily sleeping seven month olds!!!), I came across a cute little satellite and some useful approximations. ESTCUBE 1 The Estonian University of Tartu has successfully placed a student built and student operated cubesat into orbit.  The satellite will deploy an electrodynamic tether and test the ability of the device to propel the space craft by exploiting the force between the electric charge placed on the tether by the satellite and charged particles in the solar wind.  For those that didn't know, the electronic tether propulsion concept was patented by Robert Forward, a physicist who worked for Hughes research during the '60s and went on to become a famous scifi author[5][6].  Folks with ham radios can listen in on the satellite at 437.250 MHz and 437.505 MHz.  M5AKA did a great write up on the little cubesat [1].  The satellite tracker here at Co...

This was going to be so much longer and more detailed, but as you may or may not be aware, seven month olds occasionally decide of their own volition to pull all nighters, (much like grad students).  So, I leave you with a few somewhat less than scattered thoughts, and an incredible video on the topic of neutrinos. After yesterday's post on the possibility of the variation of radioactive decay rates with neutrino activity from the sun , I spent my free time today reading about beta decay and neutrinos.  The references I mention below are very complete, but this post won't be.  I present to you a series of notes and factoids about beta decay and the history of the neutrino, kind of a backgrounder for cocktail party level discussions of the topic if you will. Beta Decay I wanted to look into beta decay first because it's the type of radioactive decay, (as opposed to alpha or gamma), that involves neutrinos.  It seemed like the natural place to start.  Since...

We interrupt your normal coverage of magnetic monopole searches today to bring you something much more cool from well.. the same location!  I was jazzed to find out yesterday that the next monopole project I was going to write about was done at a stunningly pretty location Gran Sasso, Italy. (picture 1) Then, thanks to +Oliver Thewalt  I found out about a very interesting study done regarding a possible time dependence of the decay rates of radioactive isotopes.  So much for the pretty location I thought, but the science is incredibly interesting.  Then, while reading up on the research this morning I found out that one of the studies[2] was performed at none other than the very same lab in Gran Sasso.  And we're back to where we started and I get to include a pretty picture with the post!  OK, OK enough with the cool coincidences and the small world of science for today. So, here's what's going on in a nutshell.  Radioactive elements decay in a...