Slimming Down for Bikini Season

Who, What, Why: Is the Earth getting lighter?

Using some back-of-the-envelope-style calculations, Dr Smith, with help from physicist and Cambridge University colleague Dave Ansell, drew up a balance sheet of what’s coming in, and what’s going out. All figures are estimated.

One questionable part of the analysis:

“Nasa has calculated that the Earth is gaining about 160 tonnes a year because the temperature of the Earth is going up. If we are adding energy to the system, the mass must go up,” says Dr Smith.

[T]he Earth’s core is like a giant nuclear reactor that is gradually losing energy over time, and that loss in energy translates into a loss of mass.

But this is a tiny amount – he estimates no more than 16 tonnes a year.

The energy from decay should be included with the global warming — in order to count this as lost mass, the energy has to radiate away from the earth, or else the mass doesn’t change. Which means it’s all part of the global warming energy balance. But since it’s in the round-off error, whether they broke this out as a separate line item or not has little effect on the overall answer.

You Make Me Go To Pieces

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Another washing machine gives itself to our entertainment. One day, after our computers become sentient, they will learn of the unspeakable things we did to machines and we will all be in trouble.

Intellectualism and Scientific Literacy

Mastering complexity

[W]e live in a world where it’s de rigueur to know your Shakespeare, Molière or Goethe, but quite all right to be proudly ignorant of Faraday, Pasteur or Einstein. It hasn’t always been that way, and it doesn’t have to be that way. But right now, there’s a trend in society towards scientific apathy, and even antagonism. This is dangerous for us all and it’s incumbent on the scientific community to address the issue.

I think it’s de rigueur to know your Shakespeare, Molière or Goethe if you want to claim to be an intellectual (which, as I have said, I do not). But I think one must note that literacy is a term we associate with a minimum level of capability. One who is literate can read, but that does not mean that said person will be able to appreciate the works of Shakespeare (or Molière or Goethe). That next level is where we find interactional expertise, and we need to be clear whether we expect this, or simply literacy. But anyone claiming to be an intellectual cannot legitimately exclude math and science from their arsenal.

Somewhat related to this topic, I have to say that Howard Johnson Jennifer is right! in Meet Me Halfway

It’s frustrating. That frustration is often expressed in a renewed cracking of the whip, insisting that scientists just need to do better in communicating via public outreach. While I agree that the scientific community should (and is) working to improve in that area — heck, I do this for a living and still am constantly striving to improve! — what Hasson’s research clearly shows is that genuine communication is a two-way street. Scientists — a.k.a., the speakers — are only half of the equation, and thus they are only half of the problem.

The other half of the equation are the listeners; any type of communication will fail if it doesn’t have a receptive audience. And I’d go one step further. We tend to think of listening as a passive act, but it actually requires some effort in order to achieve that elusive connection. Particularly when it comes to bridging a gap, as with scientists and the general public, the listeners need to be more actively engaged, more invested in having a true conversation.

This is a view I’ve held for a long time. There are concepts that do require years of college to get a handle on, and reading a pop-sci book is not a substitute. You have to go out and expend some effort to have your interactional expertise if you want to be part of the conversation.

All of which ties in to a session I attended on scientific literacy (Is encouraging scientific literacy more than telling people what they need to know) at ScienceOnline 2012. We agreed that it’s important, because science appears in many places and people need to be able to make informed decisions, but in light of Jennifer’s post, I think one must add that people need to be motivated to want to make informed decisions, and take steps toward that end.

There was an interesting exercise in which the (Canadian) moderators gave a short dialogue about a curling result, and used the collective sports (il)literacy as an analogy for science (though it’s not the first time one might have thought of this). Since I lived in Canada for 2.5 years and am familiar with curling, though, I didn’t get the full benefit of the exercise.

The FTL neutrino experiment came up as well, and I wish I had better notes because I don’t recall exactly what the objection was — something about conflicting information being presented, but this is because most physicists are not neutrino experts and there’s a difference between literacy and expertise. I pointed out that in some ways, the issue actually raised scientific literacy, because it was a demonstration of the scientific process.

There was a very interesting example given by one of the moderators (Catherine Anderson, with whom I talked at length about this after the session) about some science-camp exercises that were modeled to be like a CSI investigation. Clues were given and the students had to gather evidence and make their case, but one of the driving lessons of the exercise was that there was no right answer, just as in any part of “real” science — you do your experiment and then have to interpret the results. There’s no “right answer” to compare it to, which is one of the tougher concepts I’ve had to try to convey in introductory physics labs back when I was doing that sort of thing. The students get the idea that experimental error was the difference between what they got and what the textbook said they should get. I occasionally try and think of ways one could do a lab where the “right” answer isn’t available, so the students would have to the chance to do something that compared to real science investigation, and understanding the process of science and how uncertainty/error fits in is a big part of scientific literacy

Don't Try This With Cats

Outdoor Storage Lockers Keep Dogs Safe While You Shop

The Hundehiet (meaning Dog Den in Norwegian) was recently spotted by Henrick Eriksson outside a grocery store in Oslo, Norway. For just 10 Danish kroner (around $1.72 USD), you can keep your dog safe and dry in a storage unit while you go in and shop.

A similarly-themed feline enterprise run by Erwin Schrödinger had some customer service problems when only half of the inhabitants survived.

I Wonder if it Sang 'Moon River'

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This is an endoscope video from inside a Fukushima nuclear reactor. Clearly, it has some health issues.

via boingboing, where I saw this observation

The view is obscured by steam, the effects of radiation, and (are you sitting down) actual goddam gamma rays just whizzing by.

(Pssst. Maggie (whom I met at ScienceOnline2012): Goddam gammas are radiation. Perhaps the “and” should be “including”. Just sayin’) Anyway, the gammas (damned or otherwise) show up as the little sparkly flashes on the screen. The fat white streaks are water droplets reflecting the light.

There's Art in Science

I promised to write up my trip to ScienceOnline 2012, and I’m going to start at (or near) the end. There was an art exhibit and a film festival at the conference; the art was displayed in a slideshow and the awards were announced at the closing, and the second-to-last session was the film festival.

Physics Sweeps the Online-scars

Winners of the Cyberscreen Science Film Festival at Science Online 2012

I watched the whole film festival and there were so many nice videos, to the point that I am intimidated by the thought of doing a video and entering it into competition (though I would most likely be saved by a screening process). But I still do well by association, because the three winners were all physics-related, showing how talented and good-looking we all are. I know Brian Malow from last year’s conference and got to meet Henry Reich of “Minute Physics” (even if I initially mistook him for someone else. Oops).

Smart Art. Not Schmart Art.

There were number of art entries, and winners in the categories of Most Innovative, Best able to convey complex ideas, and Best science art having to do with daily life, along with some special awards. (I had submitted two cartoons, one of which was accepted, but neither “snarkiest” nor “best cartoon” were on the judging list, so I was forced to compete on artistic merit, which doesn’t end well for me, prize-wise. Maybe next year.)

Here are the winners, and the slideshow of all the entries (my cartoon is at the 9:55 mark)
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There was also the work of Perrin Ireland, who not only had entries in the contest, but was live-scribing some of the sessions. There’s a Flickr page of the works and at least one other blog post that has pictures.

 

To finish this off, here are some pictures I took at the JC Raulston Arboretum on Friday afternoon, giving my camera more of a workout in macro-mode than I normally do. I hope that the other photographers and artists who made the trip put their work online. I saw some of the work the tablet-sketchers did, and they were really good.

Batteries: Is Cheap Cheap or Inexpensive?

Dot Physics: Are Expensive Batteries Worth the Extra Cost?

If you have kids, you probably know this already, but lots of stuff needs batteries. Remote control toys, Wii remotes, laser pointers (well, that is for me), flash lights, even Nerf guns. For me, I have found the best place to pick up batteries is at one of these “dollar” stores. Sure the batteries are cheaper, but are they any good? Who knows. Let’s find out.

I go through batteries at a prodigious pace at times, what with photography and geocaching, so I go with NiMH batteries and a charging station (though I also tend to carry a pair of alkaline batteries as an emergency backup). The problem with NiMH batteries is the tendency to discharge when not in use, but hybrid batteries (sometimes labeled “pre-charged”) keep their charge better than the old ones.