Space
drorzel | April 23, 2010In 1960, the first working laser was demonstrated, and promptly dubbed "a solution looking for a problem." In the ensuing fifty years, lasers have found lots of problems to solve, but there has been no consensus about which of the many amazing applications of lasers is the most amazing.
Now, in 2010, as we celebrate the anniversary of the laser, we finally have the technology to definitively answer the question: radio-button polls on the Internet!
Which of the following is the most amazing application of a laser?Market Research
Each of the choices above links to a post I wrote here giving…
drorzel | March 15, 2010I'm terrible about taking notes on conference talks, especially when I'm jet-lagged and was sleep deprived even before I got on the plane. I do jot down the occasional paper reference, though, so here are the things I wrote down, and the talks they were associated with. This should give you some vague idea of what the meeting was like on Monday.
From Joel Moore's talk on topological insulators, one of the Hot New Topics in condensed matter, a review in Nature.
From Phillip Treutlein's talk on optomechanics, a recent preprint on coupling atoms to mechanical oscillators.
From Nathaniel Brahms'…
drorzel | January 11, 2010I was looking at some polling about science over the weekend, and discovered that they helpfully provide an online quiz consisting of the factual questions asked of the general public as part of the survey. Amusingly, one of them is actually more difficult to answer correctly if you know a lot about the field than if you only know a little. I'll reproduce it here first, if you would like to take a crack at it, and then I'll explain why it's tricky below the fold.
The global positioning system, or GPS, relies on which of these to work?(answers)
Choose only one answer-- this is being recorded…
drorzel | November 10, 2009I failed to write something on the anniversary of the fall of the Berlin Wall yesterday, partly because I think the other six million blog posts on the subject had it pretty well covered. Another factor, though, was the fact that I don't have the sort of crystal-clear recollection of where I was and what I was doing on that night. I can reconstruct where I must've been-- I was a college freshman, so I would've watched it in the tv room on the second floor of Fayerweather-- but I don't clearly recall the event itself. It's all mixed together with the endless discussions of What It All Meant…
drorzel | November 5, 2009It's not getting as much press as the "X Prize" for private rocket launches, but NASA has quietly been running a contest for work toward a "space elevator," offering up to $2 million for a scheme to transmit power to a small robot climbing a 1km cable. Yesterday, the team from LaserMotive, including certified rocket scientist and friend of the blog Jordin Kare, successfully powered a robot up a 900m cable using diode laser arrays to send power to solar panels on the robot. They managed an average speed of 3.73 m/s, which doesn't get them the full $2 million prize, but qualified them for the $…
drorzel | September 4, 2009I'm clearing out browser tabs before the weekend, which has reminded me that I've been terribly remiss in not passing along information about the Quantum to Cosmos festival being held next month at the Perimeter Institute in Waterloo, Ontario.
For 10 exciting days this October, Perimeter Institute's Quantum to Cosmos: Ideas for the Future (Q2C) will take a global audience from the strange world of subatomic particles to the outer frontiers of the universe. All events will occur on-site in Waterloo, Ontario and online at q2cfestival.com
Q2C's extensive program features more than 50 events --…
drorzel | July 27, 2009(On July 16, 2009, I asked for volunteers with science degrees and non-academic jobs who would be willing to be interviewed about their careers paths, with the goal of providing young scientists with more information about career options beyond the pursuit of a tenure-track faculty job that is too often assumed as a default. This post is one of those interviews, giving the responses of Evie Marom, an honest-to-God rocket scientist at SpaceDev.)
1) What is your non-academic job?
I'm an Aerospace Engineer at a rocket and satellite company called SpaceDev. The company was recently acquired by a…
drorzel | July 20, 2009The Internet has been all abuzz today over the anniversary of the Apollo 11 landing. Tor has the best one-stop collection of reminiscences, but there are plenty of others. They're roughly equally split between "Wasn't that the coolest thing ever?" and "Isn't it a shame we stopped going.
I was a bit over -2 when the Moon landing happened, so I have no personal recollections to offer. It's a significant enough anniversary for a geek like myself, though, that I wouldn't want it to pass completely without comment.
Personally, while I have some sympathy for the laments that we stopped sending…
drorzel | July 20, 2009(On July 16, 2009, I asked for volunteers with science degrees and non-academic jobs who would be willing to be interviewed about their careers paths, with the goal of providing young scientists with more information about career options beyond the pursuit of a tenure-track faculty job that is too often assumed as a default. This post is one of those interviews, giving the responses of Dr. Richard Edgar of the Chandra X-Ray Observatory project at the Smithsonian Astrophysical Observatory.)
1) What is your non-academic job?
I work for the Smithsonian Astrophysical Observatory, which operates…
drorzel | June 25, 2009Consecutive entries in my RSS reader yesterday:
Salty ocean in the depths of Enceladus
Discovery could have implications for the search for extraterrestrial life
An enormous plume of water spurts in giant jets from the south pole of Saturn's moon Enceladus. In a report published in the international science journal Nature today (25 June), European researchers provide evidence that this magnificent plume is fed by a salty ocean. The discovery could have implications for the search for extraterrestrial life as well as our understanding of how planetary moons are formed.
and:
Jets on Saturn's…
drorzel | June 18, 2009(Alternate post title: "Hey to James Nicoll")
Via John Dupuis, our clever neighbors to the North has come up with a possible (partial) alternative to rockets:
"For decades, scientists have been grappling to find a more efficient means of getting payloads into space," says Brendan Quine (right), professor of space physics and engineering in York's Faculty of Science & Engineering, who is heading the project. A paper detailing the design was recently published in the journal Acta Astronautica; it is co-authored by York space engineering Professor George Zhu and graduate student Raj Seth.
"…
drorzel | March 3, 2009Having complained about the lack of recognition for good physical science writing recently, it would be bad form for me not to note Dennis Overbye's story about the Kepler spacecraft in today's New York Times:
Presently perched on a Delta 2 rocket at Cape Canaveral is a one-ton spacecraft called Kepler. If all goes well, the rocket will lift off about 10:50 Friday evening on a journey that will eventually propel Kepler into orbit around the Sun. There the spacecraft's mission will be to discover Earth-like planets in Earth-like places -- that is to say, in the not-too-cold, not-too-hot,…
drorzel | February 17, 2009I no longer remember the context, but the Gravity Probe B experiment came up in discussion around the department last week, and nobody could really remember what the status of it was. It came up again during the "Physics: What We Don't Understand" panel Saturday morning, where Geoff Landis was able to supply a few details from inside NASA. It came up again during a later panel on the year in physics and astronomy, and again, Geoff was able to supply some details.
I'm not sure what the deal is, but there's evidently something in the air at the moment making people think about Gravity Probe B,…
drorzel | September 29, 2008Congratulations to SpaceX for successfully launching a payload into orbit after three failed attempts:
The two-stage Falcon 1 rocket built by Space Exploration Technologies (SpaceX) lifted off at about 7:15 p.m. EDT (2315 GMT) from the U.S. Army's Ronald Reagan Ballistic Defense Test Site on the Kwajalein Atoll in the about 2,500 miles (4,023 km) southwest of Hawaii. The successful space shot came less than a month after an engine timing error during stage separation doomed SpaceX's third Falcon 1 test.
"As the saying goes, the fourth time's the charm," SpaceX CEO Elon Musk told an elated…
drorzel | September 15, 2008As you might have guessed from yesterday's tease, the folks at ScienceDebate 2008 have now managed to get answers from the McCain campaign (to go with Obama's froma few weeks ago). Which means that while you may never see them answering science questions on a stage together, you can put them head-to-head on the Web, and see which you like better.
Of course, the key question regarding McCain's answers is "How long does it take him to mention elements of his biography?" The answer: There are 186 words before you get to:
I am uniquely qualified to lead our nation during this technological…
drorzel | August 22, 2008Over at Tor.com, David Levine describes a really cool event he went to just before Worldcon: a crash course in modern astronomy for SF writers:
The idea behind Launch Pad is Gernsbackian: getting good science into popular fiction as a form of public education and outreach for NASA. SF writer and University of Wyoming astronomy professor Mike Brotherton managed to get a NASA grant to fund this workshop for five years, of which this was the second. All the attendees' expenses were paid, including transportation to and from Laramie, housing in college dorms, and most meals--though we had to pay…
drorzel | August 3, 2008Bad news from the worthwhile sections of this morning's New York Times: another SpaceX rocket blew up.
A privately funded rocket was lost on its way to space Saturday night, bringing a third failure in a row to an Internet multimillionaire's effort to create a market for low-cost space-delivery.
The accident occurred a little more than two minutes after launch, and the two-stage Falcon 1 rocket appeared to be oscillating before the live signal from an on-board video camera went dead.
On the one hand, I hate to see these things blow up. I'm no free-market zealot, but I'm all for cheap space…
drorzel | August 1, 2008Well, OK, that's a stretch, but there is water, according to the latest Phoenix results:
"We've now finally touched it and tasted it," William V. Boynton, a professor at the Lunar and Planetary Laboratory at the University of Arizona and the lead scientist for the instrument that detected the water, said at a news conference on Thursday. "And I'd like to say, from my standpoint, it tastes very fine."
No word yet on whether they've managed to figure out how to turn on the alien atmosphere-generating machine. That'll probably have to wait for the next mission.
Update: Here's a bonus link to…
drorzel | May 26, 2008So, the Martians go and helpfully draw a box on the ground as a target for the Phoenix landing, and what do they do? They land next to it, not in it. Way to go, NASA.
I bet if they hadn't screwed up the unit conversions, they would've hit it...
(The square pattern on the ground is really something to do with the water ice that the mission is there to look for-- it's a natural phenomenon, and a good sign for the mission.
(It just looks like a landing zone drawn by space aliens.)
drorzel | December 12, 2007There's another Mars article in the Times this morning, which I wouldn't bother to note in a full post save for one thing: the way they got the results.
The right front wheel of Spirit stopped turning in March 2006. Since then, the rover has been driving backwards, dragging the lame wheel along. This May, scientists noticed a bright spot in the trail of overturned dirt.
They turned Spirit around for a closer look, finding high levels of silica, the main ingredient of window glass. They then aimed the rover at a nearby rock, wanting to break it apart to determine if the silica was just a…