First Watson, Now Holmes

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As a headline, it’s a cheap link, I know, but it was irresistible. The point is that the comet Holmes suddenly got much brighter and is now beginning to do a naked eye display. How much brighter? It went from magnitude 17 to magnitude 2.8 over the course of a few hours. David Morrison (at NASA) who writes a newsletter about near earth objects (NEO) gives an analogy: “This is equivalent to the planet Saturn suddenly becoming as bright as the full moon.”

Before you go wild, based on this, know that


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Tales From The Industry XIII – Magnetic Moments

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magnetism shoot

The strange object pictured above is a rather nice demonstration of the “field lines” around a bar magnet. It is not a great photo (all my fault), but the demo is great. The designers suspended the tiny bits of iron in oil, inside a sealed chamber, forming a block. There’s a little cylindrical hole through the centre of the block (but still outside the chamber) that allows you to put a bar magnet in. This makes for a demo far more exciting than any shake-it-up snow scene: You shake block and the iron filings are all over the oil in three dimensions, randomly arranged. You then insert the magnet. They slowly but determinedly arrange themselves into the familiar pattern, in three dimensions. It’s great. (Why didn’t they have these when I was growing up?! I might have gone into science… Oh, wait…)

I was looking around one of our demo labs last week for things to use to demonstrate some of the principal effects of magnetism. The above demonstration was one of the Click to continue reading this post →

Weather Vs Climate

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My Correlations colleague Michael Tobis has a nice, simple post about the difference between weather and climate that’s worth a look. He starts out:

We climate scientists often hear the case made “If you can’t predict the weather next week, how could you predict the climate in a hundred years?” The answer to the question is hidden in the question. The weather and the climate are not exactly the same thing, and so what you can say about the one and what you can say about the other are also different.

Enjoy!

-cvj

Under the Sea

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jellyfish from AP story

There’s something ever so romantic (not in the hand-holding-under-the-moon sense) about deep sea exploration. It occupies the roughly same part of one’s emotional landscape as space exploration, I think, but it’s maybe even more exciting in some ways, because there’s something about the utterly weird and unknown being just under the surface of the familiar, while space seems so far away (actually, in one sense it isn’t, if you go straight up, but in terms of logistics, it seems and is far…). It also very much has the feel of a 19th Century adventure, with explorers going off and bagging the weird and wonderful specimens to bring back for museums and entertainment. This was seldom good for the specimens involved, of course, and we Click to continue reading this post →

Orionids!

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Don’t forget the Orionids over the next night or two (peaking late tonight, the wee hours of Sunday morning). As the name implies, look for them coming from Orion, although even if you don’t know exactly where that is, you’ll see them almost anywhere you look in the sky if you’ve enough dark. Recall that Orion has those three bright equally spaced stars in a line, making up his belt. I spoke about this, and gave more directions about the Orionids in a post last year.

There’s a Space.com piece by Joe Rao with more discussion. About sightings, it says:

Expect to see few, if any Orionids before midnight – especially this year, with a bright waxing gibbous Moon glaring high in the western sky.

But moonset is around 1:30 a.m. local daylight time on Sunday, and that’s a good time to begin preparing for your meteor vigil. At its best several hours later, at around 5:00 a.m. when Orion is highest in the sky toward the south, Orionids typically produce around 20 to 25 meteors per hour under a clear, dark sky.

Today’s StarDate (as usual, read on NPR by the wonderful Sandy Wood) has a piece on it too. Here’s an extract from the transcript (written by Damond Benningfield):

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Massive!

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Messier 33 GalaxyThere’s been a recent discovery* of an unusual black hole. It is about sixteen times the mass of our sun. While this might not seem as dramatic as the black holes that are millions of times the mass of our sun that live at the cores of galaxies, such large black holes that result from the collapse of ordinary stars have hitherto been unknown. This presents an important and exciting puzzle about the processes by which black holes form from the collapse of stars. There’s evidently more going on than previously thought, possibly as a result of complicated interactions with its companion star during formation.

(Image: A Harvard-Smithsonian Center image of the galaxy Messier 33, in which the new black hole was found.)

I talk a bit more about this on Correlations, and you can read more about the recent Click to continue reading this post →

Talk Talk

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dbranesTwo Thursdays ago I went up to Santa Barbara to give a seminar. I had a great time, and it reminded me why it can be so much fun to go somewhere and visit for even a short time and do that. I got to catch up with several old friends, including Santa Barbara itself, where I lived for a number of years in the 90’s when I was a postdoc. I spent time chatting with the various people there before (at lunch) and after (individually) the seminar, learning about some of the research they’re doing, and also talking about other matters physics-wise and gossip-wise. I wish I’d had more time to talk since I did not get to talk to everyone I wanted to talk to, and not at as much length as I would have liked. (This was partly due to the fact that I spent the morning in my hotel room writing some of the slides for my talk. – I had a presentation the day before to focus on, along with a departmental visitor to host, and the day before I was also occupied. Don’t ask about any earlier than that – I never prepare new material that much in advance. Not because I don’t want to, but it just never happens… if I have more than a day or two, I will find that there’s other stuff I have to do.)

Anyway, a good time was had by all (I think). I can even post a picture of some of us at dinner in the evening after the talk. (Will update later with that, since it was downloaded to computer that’s not here.) We went to an old haunt of mine in downtown Santa Barbara – Roy’s. I’m pleased and surprised that it is still there and going strong, since it is the sort of highly individual restaurant that – since it is also reasonably priced – you’d expect to vanish from such a high value spot in town.

What was I talking about? Well, with three students (Tameem Albash, Veselin Filev, and Arnab Kundu), I’ve been involved in some fun work on some of the physics concerning Click to continue reading this post →

Dyeing for a Solution?

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My first reaction was one of dismay mixed with amusement:

griffith park treatment

(Taken from the Griffith Park Observatory. Click for larger view.)

Surely the solution to the brown 800-plus acre scar in the landscape that was once a lot of greenery in Griffith Park visible from all over the city, after much debate about what to do to re-seed vegetation after the devastating fire, was not to … paint the park green!!??? (A spectacularly unreal shade of green too.) It would be just too “Hollywood” a solution to paint the very mountain called Mount Hollywood (peak to the left just out of view).

So I am assuming that there is some valuable and botanically relevant content to this green stuff that I saw being dumped by the helicopters on a Sunday Morning hike. If anyone knows, let us know. I’ve been too preoccupied with work matters today to do a search of the blogs to find out what’s up. I’ve faith in the good sense of the many thinking about the park to trust that there’s much more to this than the colour green. I’ll update this post when I learn more.

Don’t hesitate to share anything you know about this…

[Update: Apparently it’s “hydromulch”. Erosion control, they hope. I remember seeing some of this weird green stuff on mud patches in Aspen earlier this year. Very odd that they couldn’t find a better green.]

[Update #2: Happily, the weird green seems to fade after about a week to a green that is… less weird.]

[Update #3: Mention of some more information can now be found at the Griffith Park Recovery blog here.]

-cvj

…And He Got Einstein’s Office!

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From the Nobel Prize site, the final one of the year:

The Royal Swedish Academy of Sciences has decided to award The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2007 jointly to Leonid Hurwicz (University of Minnesota, MN, USA), Eric S. Maskin (Institute for Advanced Study, Princeton, NJ, USA), and Roger B. Myerson (University of Chicago, IL, USA), for having laid the foundations of mechanism design theory”.

No, I did not really know what mechanism design theory was either. Some of it sounds rather interesting, in fact. The website has a breakdown of the key contributions and ideas here. Once again, I found that NPR had a really nice radio chat about the prize. You can hear that here. In that audio file, you can learn the origin of this post’s title…. if you cannot already guess.

-cvj

Yellow in Green

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We had rain again! Quite a big deal here. Well, this meant that some rose bushes that I’d been letting grow well out of control were bent over with the weight of the water. So lots of pruning yesterday. Here’s one of the sweetly scented blooms I harvested along the way:

yellow rose in vase

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A Peace Prize for Science

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This is just great!

From the Norwegian Nobel Committee (remember, this prize does not come from the Swedish Academy):

The Norwegian Nobel Committee has decided that the Nobel Peace Prize for 2007 is to be shared, in two equal parts, between the Intergovernmental Panel on Climate Change (IPCC) and Albert Arnold (Al) Gore Jr. for their efforts to build up and disseminate greater knowledge about man-made climate change, and to lay the foundations for the measures that are needed to counteract such change.

This is simply fantastic, since I see it as a major step that a peace prize has been given for work on a scientific issue that affects our lives so profoundly. The IPCC was tasked with sifting through all the science on the matter, and present a thoughtful set of reports to guide governments, other organisations and individuals on the issue. This is a huge and important task that has been deservedly recognised by the committee. (My Correlations colleague Michael Tobis has more thoughts here.)

It could not stop there though. We live in a society where it is not enough to make a scientific case, since there are people and organizations that will try to confuse the issue for their own personal gains, and -most dismayingly- the vast majority of people are not going to be swayed by scientific arguments that they will never read, or take the time to understand, or consider as not personally relevant to their lives. This is where Al Gore (and others) comes in. You can read some of my recent thoughts about Al Gore’s role in all this in an earlier post entitled The Man of Tomorrow?, and so I won’t repeat all of that here, but here are some extracts:

[…] I’ve been very heartened by the pace of change that has happened in a short time with regards to people talking about the environment, and (some) people beginning to do something about it. Not become activists of the sack-cloth wearing sort, but merely thinking about the small things that individuals can do here and there that correspond to large changes when you add up the effort of millions. To begin thinking about changes to lifestyle and business practices that might make a real difference.

[…] So what is responsible for this pleasant change, this marked increase in awareness in the populace? At least in the USA (the environment’s worst offender – although it is being challenged for this dubious position by China), whether you like it or not we must point to Al Gore as being one of the principal messengers who has got the debate going on the street and in people’s households. It would be nice to think that it was all (or mostly) about people -under their own steam- stopping and weighing the arguments from scientists and other thinkers that were already out there for many years, but that’s largely a fantasy. A lot of it has to do Click to continue reading this post →

Even More for my Reading List

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Aha. I’ve been meaning to get around to some Doris Lessing for a long time. The Academy is trying to tell me something:

The Nobel Prize in Literature for 2007 is awarded to the English writer Doris Lessing “that epicist of the female experience, who with scepticism, fire and visionary power has subjected a divided civilisation to scrutiny”.

Do you have any favourites of hers you recommend?

Here are some passages from her biography on the Nobel site, talking about some of the works that really got her a great deal of wider recognition, emphasizing her important intersection with other genres such as feminism and science fiction (to pick Click to continue reading this post →

Coffee Thoughts

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Well, it’s almost the end of the morning, I’ve just finished one set of tasks and about to move on to another and I thought I’d sit down and chat with a cup of coffee. This morning has largely been about three different outreach-type tasks. I hope to spend the entire afternoon on Physics research. I’m an optimist.

Here’s the shape of this morning:

At 7:00am I checked my email and found that an editor at a magazine was looking for something different from what I initially wrote in response to a question of hers about art and science. I’d spent some of the evening before writing something and sent it along, adding a couple of sentences at the end as a sort of final thought. Of course, she liked the last two sentences and not the rest so much (it was not getting directly at what she wanted me to speak to). So, a bit crestfallen, I tried again. In fact, I had indeed spoken to the issue, but had sort of buried it a bit. So I spent some time scraping away the unnecessary and bending and reshaping the text. Amazing how long that takes when you’ve got a word limit. I sent it along eventually. I’m not sure it is actually as good as what I wrote last night in terms of literature, but it is more to the point of what their feature is about, and so in that sense it is better. From the response I got back, it seems to be more like what they’re looking for now. I’ll tell you more about it when it appears… it’s all about a personal take on the interaction between art and science as far as inspiration goes, with a single piece to illustrate it. It’s the picking of a single piece that was the true difficulty. Took me days to decide. In the end, I had to make some hard choices indeed. I actually enjoyed thinking about the issue though. Sort of re-invigorating. I’d be happy to hear your thoughts about the matter in the comments. I’ll come back to this once the piece appears – if it does.

At 10:00am I called a television production company to talk about a new TV show for Click to continue reading this post →