Archive for the ‘SCIENCE!’ Category
Quote of the Day
Screw quantum mechanics. I should have become a rocket scientist; it’d be easier.
- Me, after a particularly mind-warping quantum mechanics class.
New Shooter Report – Delayed
Busy with graduate school applications and science. Write-up on the recently mentioned new-shooter report is delayed somewhat.
Note To Self
When constructing a custom, non-sealed Geiger–Müller tube in a chamber in which you can vary the gas mix and pressure, pay attention to sharp edges of electrified parts outside of the tube itself: you ensured there was no sharp edges inside the tube, so avoid points where the electric field is stronger, thus avoiding inadvertent ionization of the gas mix.
When the same potential is applied to parts outside the tube, also in the chamber, sharp parts (e.g. a nut and the end of a piece of wire) can cause strong electric fields to be produced. This can cause a fun, purple glow1 from one’s apparatus. This is bad.
Fortunately the high-voltage power supply is current-limited, and no damage took place.
In related news, electrical tape is extremely useful at insulating (amazingly enough) electrical devices and can stop the aforementioned problem.
- The gas in the chamber was mostly argon. [↩]
This Looks Like Fun
A rather detailed news report about the…sport of anvil shooting can be found here.
Now, the question is…where can I get an anvil?
Poor Photons
Last night, I found myself up at the observatory again. Surprisingly it was not a Dark and Stormy Night, but there were a few clouds that kept us from opening for some time.
Personally, I find it somewhat of a downer that these photons originated in a star mumbledy-mumbledy brazillion miles away, flew through the uncharted depths of space past wonders unknown by human minds, avoided vast interstellar dust clouds and other celestial obstructions, and traveled on a path destined to intersect the imaging system of a particular telescope on a particular mountain on the third planet of a rather ordinary, uninteresting star in the spiral arm of one of billions of galaxies…only to be intercepted at the very last possible moment by a wayward floating blob of water vapor a few hundred feet above the telescope.
The final result of their mumbledy-mumbledy brazillion mile tour of the universe was not, unfortunately, to be detected by advanced equipment, analyzed by up-and-coming scientists, and hopefully used to allow said scientists to better understand the universe. Rather, the result was that a particular blob of floating water vapor was heated by some infinitesimal fraction of a degree while the scientists below shake their fists and curse the clouds.
Truly, a rather pedestrian end to a photon that has traveled so far.
Damn You Mother Nature!
I was scheduled to observe at the 61″ Kuiper Telescope tonight.
Alas, mother nature decided this was not going to work, and gave us clouds and lightning. As such, we didn’t get to start observing at all and are now off the mountain.
In other news, the observatory is pretty nifty. I’ve never been at this one before.
Doing Math for Fun and Science
The girlfriend of one of my fellow physics students works on the Lunar Reconnaissance Orbiter project.
Tonight as a bunch of us physics folks were sitting around my apartment chatting (the girlfriend was up in the Phoenix area), my friend noticed her status message on Skype posed a practical question which I paraphrase as, “If a spacecraft 20km away from the LRO vents ~100g of hydrazine, what’s the probability of hydrazine impacting the LRO’s optical elements? You have 20 minutes.”
Taking this is as a challenge, we started calculating the answer. We knew very little details, so we made some assumptions: the hydrazine is in a spherically-symmetric expanding shell, both spacecraft are stationary relative to each other, and gravity is not a factor. In a few minutes we came up with a quick, dirty, back-of-the-envelope calculation that indicated that it would be very unlikely for any hydrazine to contact the optics and, if any did, it would be a very small amount (on the order of a few molecules).
My friend relayed our calculations and results to his girlfriend, who was surprised: she didn’t actually expect anyone to bother working stuff out. After a short while, she informed us that our calculations had been passed upstream to NASA for their consideration.
Very cool.
Of course, our calculations were almost certainly unrealistic. Even so, they provide a starting point.
Yes, physics students actually do this sort of thing in their spare time.
Watchlists
I’m sure I’m now on some sort of government watchlist.
Why? Just now, I have several windows open in Firefox, each with several tabs.
Among the various tabs open, one had the contact information for a local pizza parlor, another had the .223 page of Ammoman, a third had the Wikipedia article about plutonium, another about various radiation-emitting nuclear reactor accidents that have occurred, one showed the page for the D-Zero accelerator project from Fermilab, and another displayed the university’s physics department website.
I’m not entirely sure what terrible, nefarious plots the feds might think I’m up to, but they’re all true MUWHAHAHAHA! there is absolutely no truth involved in any of them. I just happened to be doing a bit of research (Fermilab, physics department), being distracted and reading about plutonium and reactor accidents (just for the heck of it), was looking for ammo deals, and was hungry. Really. I swear.
Long Shot
Anyone have any good advice for a newly-minted graduate with a B.S. in Physics and a minor in math?
After getting out of the army a few years back, I thought it’d be a good idea to finish up my bachelors degree, so I’ve spent the last few years cloistered in the Physics & Atmospheric Sciences building at the University of Arizona. Now, I’m in the home stretch: if everything goes to plan, I will graduate next spring and be married shortly thereafter.
Unfortunately, this brings up the big question, “What next?” Do I go into industry? If so, where? Doing what? Maybe work as a lab technician? Teach? At what level? Do I go on to graduate school? Where? For what1 Should I pursue a Masters or shoot for the Doctorate?
My soon-to-be-wife is a high school math teacher in the Phoenix region. While she makes a decent salary, it’s insufficient for her to be a sugar mama. Fortunately the grad schools I’ve been looking at will cover my tuition and pay of a stipend (not much, but it’s enough to live on), and the VA will give me ~$600 or so per month plus some money for tuition and books for three years, so we should be reasonably set for money, so long as we’re smart about it.
In addition to actually doing scientific research, I enjoy teaching, and would very much like to be a university professor at some point. In nearly all cases I’ve looked at, this requires a Ph.D. and from what I’ve been able to find out, it’s generally better to get started on this sort of thing early. Alas, I seem to have a bit more generalized love of science than a focus on a specific topic, so finding the necessary focus needed for a doctoral program would be challenging.
It’s a bit of a long shot, but do any of you, the gentle reader, have any advice for a person such as myself? While comments are welcome, I’d really appreciate email, as it allows for me to respond more personally.
Thanks!
- Physics? Engineering? I really enjoy science, particularly space science (as opposed to, say, quantum mechanics), rockets, etc. and would like to stay involved in related fields. [↩]
Fun at Work
While the Epic Intercubicle Nerf Battle from two weeks ago was fun, my boss just informed us of an upcoming, interesting project: aerial photography.
We need to come up with effective ways to take photos from a long pole, a kite, and a balloon. These contraptions are to be constructed and provided to high school students to do various observations around campus.
I never thought that IT work1 would be this much fun.
- Hey, it helps pay the bills while I finish up my degree. [↩]
