The Hippocratic Oath Does Not Apply Here

Did the OPERA affair harm or benefit science?

I think there was a benefit, because the actual process of science was displayed. But your mileage varied, as always, depending on your source. There were a lot of good stories, in which you would find explanations of what was going on. Unfortunately, there were a lot of stories that sensationalized the events, and gave us Einstein Overturned/Relativity is Dead – type headlines and stories, despite the fact that nobody associated with the experiment made such claims (of which I am aware, at least). But that’s par for the course. You have good reporting, you have bad reporting, and you have headline editors. They care about circulation, not whether they are doing harm to physics.

There were also instances of people stepping beyond their expertise in trying to explain the results. People were awfully quick to blame GPS (but not one of the critiques I read came from within the timing community; we know how well you can do time transfer) and with that came some “problem solved” stories. That, too is probably par for the course.

I think the only real damage to any credibility was the discovery that an internal calibration/check of the local timing system hadn’t been done in a couple of years. That seemed sloppy. People at the top resigned. They took responsibility for the oversight.

Overall I’m much happier showing off science, warts and all, than allow a stereotype to perpetuate — the mistaken notion that every announced result is the final word and that scientists see themselves as infallible. We got to have a discussion about uncertainty and statistical significance that wasn’t framed by someone equating uncertainty with failed science. The effect on public perception? I don’t know. I suspect that this just reinforced their biases — if they didn’t trust science before, this is just one more reason not to. But, as the adage goes, there is no bad publicity. If it raised anyone’s interest in science, that’s got to be good.

You Can Call Me Al

It takes far less energy to recycle an aluminum can than to make one from scratch – recycling 40 Aluminum cans is the equivalent of saving a gallon of gasoline. One problem is that not all of the can is Aluminum.

Toward a Greener Soda Can

[R]ecycling the cans turns out to be harder than it looks, because the basic soft drink or beer can is actually made of two kinds of aluminum. The bottom and sides are made from an aluminum sheet that is strong enough to be stamped into a round shape without tearing. For the top, which must be stiff enough to help the can retain its shape and withstand the bending force when it is opened, can makers blend aluminum with magnesium.

Walking Into a Cloud

Clouds

One of my favourite bits about being a dad is, every now and then, just casually blowing my little boy’s mind – with science. Last weekend, we were out for a stroll when he came out with “I wish I had a rocket so I could go and stand on a cloud”. Sensing an opening, I explained that clouds were made of tiny drops of water that hang in the air, so you wouldn’t ever be able to stand on one. But that, when it’s misty, that’s just a cloud that’s really low down on the ground, so it’s actually very easy to stand inside a cloud. That pleased him, as he acknowledged his chances of owning a rocket any time soon were sadly marginal.

The Power of Prefab

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I suspect not being surrounded by other buildings helped. In my own experience of having helped get a building built, it was made clear to me that logistics is a huge component of the process. Here you can see that the identical nature of the floors allows for teams to work in parallel. While floors are added above, the interior is worked on below.

Now they want to build the world’s tallest building in just 90 days.

BSB chief executive officer Zhang Yue (张跃) said the company plans to break ground on Sky City in November 2012, and that the tower will be completed in January 2013.

Are We Our Own Worst Enemy?

Why the Scientist Stereotype Is Bad for Everyone, Especially Kids

To many – too many – science is something like North Korea. Not only is it impossible to read or understand anything that comes out of that place, there are so many cultural differences that it’s barely worth trying. It’s easier just to let them get on with their lives while you get on with yours; as long as they don’t take our jobs or attack our way of life, we’ll leave them in peace.

That’s very frustrating to scientists, who often bemoan the lack of public interest in what science has to say. They’re right to be frustrated: all our futures are dependent on proper engagement with science. So, how to solve this problem?

One thing to which I object is the charge that we did this to ourselves:

[T]he problem doesn’t lie with the science. It lies with the scientists. Or rather the myth the scientists have created around themselves.

The author makes several good points in the article, but never backs this one up. Which would have been nice, because I don’t see it as being true.

Same Old Story

Same Old Story : Too Many Graduate Students

I saw this report from the NIH advisory committee. The summary of the problem: there are too many graduate studnets (sic) produced in biomedical fields for the number of academic positions that will be available for them in the future.

Same old story: ignoring the fact academia is not the only career for someone with a science PhD. The NIH report doesn’t make this mistake. From the summary (emphasis added):

The model should include an assessment of present and future needs in the academic research arena, but also current and future needs in industry, science policy, education, communication, and other pathways. The model will also require an assessment of current and future availability of trainees from the domestic and international communities.

In the actual report they note that the number going into academia has dropped, ~34 percent in 1993 to ~26 percent today. So it hasn’t been the case that most biomedical PhDs go into academia for at least 10 years. Why are people pretending that this is the case?

One thing I don’t get is the claim that graduate school does not prepare you for a non-academic career. (In contrast to my time in school, when I heard the complaint that it doesn’t prepare you for an academic career, because there was little to no preparation for becoming a teacher.) Maybe my own experience in physics is atypical, but I didn’t have to learn a whole lot about how to conduct research when I got my current job outside of academia (working in a government lab). The implication of the study is that in biology this isn’t the case, so sure, you should go ahead and fix that.

There may well be a good argument that we have too many graduate students. But comparing that number directly to the number of academic positions isn’t one of them.

More Than You Probably Wanted to Know About Dominos

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A domino can knock over another domino about 50% larger than itself. A chain of dominos of increasing size makes a kind of mechanical chain reaction that starts with a tiny push and knocks down an impressively large domino.

Original idea by Lorne Whitehead, American Journal of Physics, Vol. 51, page 182 (1983).

See http://arxiv.org/abs/physics/0401018 for a sophisticated discussion of the physics.

One thing not discussed in the video (but the paper treats in gory detail) is that it’s not just an energy argument — you also must consider the collision between the dominos. It should be pretty obvious that the dominos can’t be separated by more than their height, else they won’t collide, but that they also need to hit the next high enough in order to exert a sufficient torque to topple it. Which contributes to this limit on the size of the next one.

Peek a Boo

How well can the government spy on us via satellite?

[I]f [the donated satellites] had actually been used as spy satellites, what would these super telescopes have been able to see on the ground? It’s a fascinating question, and leads into a nice basic discussion of the optical resolution of imaging systems. In other words, what is the smallest detail that could be picked up by one of these telescopes in orbit?