Category Archives: science

Tense Moments

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I’ve tried not to be worrying about it, but nevertheless there was a bit of concern today as I logged into the account and looked to see if any films had arrived. I did this a few times between other things like teaching and working on issues to do with another film project, and each time there was nothing. I was confident that there were some films on their way, since various students from the teams who entered the film competition had emailed me about various clarification issues (duration, what does midnight mean exactly, etc.) and so I know that not all of the 19 teams who submitted their application to enter the competition in October were going to be no-shows… but how many would “not all” end up being? This is the issue you get when you set something up, advertise as much as you can, and then sit back and hope that people come. You never know until they do. The same thing happened with the pre-registration phase. I’d been running around doing as much as I could to build awareness since the end of August, but until the very end I did not know if I would get a single entrant. In the end 19 teams (around 90 students) got involved!

So here I am again. There’s no turning back… the splendid theatre is booked for the showcase, the judges have been selected, the upload space is sitting waiting, the […] Click to continue reading this post →

Science Comics and Branded Content

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People often point to certain “science comics” as examples when I explain to them what The Project is about. In turn, I explain that while both things have science in them, and both things use sequential art, they’re not really the same. Not everyone gets it, but that’s ok. (If it helps, ask yourself if you would assume that I was writing a bodice-ripper for Mills and Boon or Harlequin if I said I were writing a novel in which there are elements of love, relationships, romance, etc., in it*.) There’s room for more than the “hey kids! science is awesome!” model, as fine a model as it is.

Since the confusion with that genre is so easily made I confess that I find myself reluctant to discuss it much here, lest I compound the confusion. That might be silly. Anyway, as an exception, I thought I’d point to a little collection of comic covers (and an extract from an interior) that the Washington Post has on its Innovations site as a piece about the movement in the fifties to get kids interested in science, through the big popular culture medium of the time – comics!

I wonder how much it worked, as compared to other efforts at the time. Is it even measurable? (For example, I think that the stuff I do in science outreach helps the cause of strengthening science (and its understanding) in […] Click to continue reading this post →

Scribbling about Quantum Gravity

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So I mentioned that I was doing some more material for the Nova people, via their website. (See here for some earlier material about Multiverses.) They’ve a blog called The Nature of Reality with contributions from many interesting people. Well, now they’re featuring those pencasts I think I told you about in an earlier post.

The pencasts are all about Quantum Gravity, a major research topic in physics. I talk about what it is and why we care about it. I speak and write, scribble and draw and […] Click to continue reading this post →

Tune In!

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Later today, there’ll be a joint seminar by physicists from ATLAS and CMS, the two experimental halls at the Large Hadron Collider (LHC) looking for evidence of the Higgs boson. This will be the first official announcement of the physics seen (or not seen) by the combined results from both independent searches. Neither search has enough data to announce a discovery of anything (as far as I’ve heard) and the combined results would not constitute one either, but people are hoping for at least some nice hints of something suggestive that support each other. We shall see! this is an exciting time, as you’ve read me say before, and so I recommend looking out for what will be announced. Even a negative result (e.g., “we’ve found nothing yet”) […] Click to continue reading this post →

Lunar Eclipse!

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For those out here in the West of the continent, there’ll be a lovely lunar eclipse tomorrow morning (I should have mentioned it before but it somehow missed my attention). It will be at its peak about dawn (about 6:00am), and so if you are an early riser, it should be a nice sight to greet you – especially since it is expected to be somewhat red in hue. Of course, look for the moon in the West, near to setting. Since it will be close to the horizon, it will look quite large as well.

The eclipse will actually be visible right across the Pacific too, and into Asia and Eastern Europe, but check local details for the specifics.

There are more details here*. I plan to get up and have a look… maybe we’ll all be watching it together!

Enjoy!

-cvj

*Thanks Shelley! Click to continue reading this post →

Goldilocks Final

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So it is the final exam for my quantum field theory class tomorrow, and today I need to write it and typeset it. I’d given them a choice of exam. They seemed to want a take-home exam, but I warned them that a take-home is probably going to be way more challenging. I’d be thinking up newer, harder material that you can’t just google the results for. An in-class exam has a time limit, which seems to freak people out, but on the other hand (assuming the examiner (me) is a reasonable person – and I think I’ve given them every reason to believe that) it is likely to be written to be solvable in the assigned couple of hours. So there is a much stricter limit to the length or depth of what they’re going to be asked to do. If they’ve really been following along in the class and doing the homework, they should be able to get most of the exam done without breaking a sweat in 3/4 of the time allowed… maybe the last 1/4 of it might need a bit of furrowing of the brow, squinting the right way, scribbling hurriedly here and there, but in the spirit of a challenge, not torture. Even if they don’t get every last part solved, a well-designed exam will give them several opportunities to show off what they’ve learned.

I like setting take-home exams too, but I’ve a soft spot for in-class exams, I’ll admit. As you may have guessed, I loved in-class exams when I was a student. Yeah, I’m weird. This does not mean that I always scored super-well on them, but I enjoyed the […] Click to continue reading this post →

Whale Song – Your Help Needed

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I heard on NPR this morning that there’s a shout out to everyone to help with an interesting scientific project. It is crowd-sourcing in order to achieve certain objectives in science, which is an excellent idea. I wish I could do certain research projects I’m working on in this way – would be fun and quite novel indeed… Crowd-sourcing crowds of processors is maybe the closest I’d get to that. Anyway, it is all about identifying different types of whale song, and as a citizen scientist you’ll […] Click to continue reading this post →

Almost at an End

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I’ve had a fun time over the last few lectures with some more mature topics, pointing the students to things that they will see more (I hope) in the advanced class next semester. We covered the large N Gross-Neveu model in some detail, giving me the opportunity to give a glimpse of several important topics and techniques… at large N the 2 dimensional model’s solution is exact, and it shows important phenomena such as spontaneous chiral symmetry breaking, dynamical mass generation for the fermions and dimensional transmutation. These are all important phenomena shared by (the more difficult to study) quantum chromodynamics, the theory of the strong nuclear interactions. (See an earlier post about some of these properties and what they are… there’s also a mention of a new general level book that goes into some detail on the physics and the history.)

The other thing I took some time to explore was the diagrammatics of the model, and the interesting patterns that emerge […] Click to continue reading this post →

Tales from the Industry XXXVIII – Improvising

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For the second half of today I was involved in film-making again, but this time not the usual science documentary material, but something else. What, exactly, I am not at liberty to tell you since I don’t really know, if the truth be told. It is going to be a rather beautiful-looking piece of work, with an interesting narrative arc, and… well that’s all I know. I was cast in it a while back following an interesting story in and of itself. I’d made friends with a really engagingly interesting bartender at a bar downtown that specializes in rum, a while back…(a year? more?) We had a great time chatting about ideas in science, the arts, and beyond, and did that “let’s stay in touch” thing that people do a lot, which may or may not really happen…

Some months later, the same fellow came to see me in my office to tell me about this film he was making, and that he’d like me to come and be in it. At the end of the conversation, somehow I still knew nothing about the film and what I was to be doing in it. I was just going to be in a splendid house somewhere, talking to people, and… […] Click to continue reading this post →

Rough Pages

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Well, it’s a time-consuming process (continuing the new work on The Project mentioned in a recent post), especially when you put in more detail than really needed on what is supposed to be a rough layout. Sigh… Anyway, I’m several pages along in layouts for a story I wrote a while back, and I’m flipping ahead from time to time and wondering how long this beast is going to end up being! In any case, it’s a fun topic (or topics) being explored in this one. I’m wondering if I should try to find a way of splitting it into two stories or perhaps […] Click to continue reading this post →

Infinity Coincidence

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So here’s an interesting sequence of events. On Tuesday in the QFT class I finished the lecture on Renormalization Group Flow, and the idea of a “beta function”, unpacking the results we’d accumulated from QED and quartic scalar field theory to use as illustration. The key result, for those of you about to scroll away (or the few of you who have not, but are hovering over the scroll bar), is as follows. Never mind what a beta function is right now. The issue at hand concerns whether it is positive or negative for a force of interaction being studied. A positive beta function tells you that the strength of the interaction between constituent things (particles, etc) gets weaker as you work at lower energies… This is an important result in understanding how Nature behaves in a variety of situations… one way of seeing variety is to look at different energy scales, and sometimes what seems familiar takes on different character. The converse is true… that positive beta function tells you that the interaction gets stronger at higher energies… Energy is also rather like the inverse of distance scale too, so high energy is akin to shorter distance scales (higher resolution), and low energy like longer distance scales (grainier resolution). In other words, looking at stuff in really tiny detail means using higher energy… and the nature of that stuff can change when you look at that sort of resolution since the way things interact changes… For electromagnetism, for example, we see that it gets stronger the closer we look, digging more deeply into the structure of the atom, say, probing the charged constituents of the nucleus once we’ve understood electrons. The result is that you see the electromagnetic interaction changes, ultimately turning into something else… (it merges with one of the nuclear forces, in fact…but that’s a story for another day)

So anyway one of the things I ended the class with was the idea that if you had a negative beta […] Click to continue reading this post →

A Mighty Pen

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Wow, Friday already! It has been a busy week, but with some good stuff here and there, I’d say. “Good Busy”, as I sometimes say. I’d like to dig into some work this early morning before the day gets into my head (although I’ve already been emailing with the East Coast) and so I’ll be brief.

One of the things I’ve been doing is experimenting with Pencasts, for PBS. What are those? Well, after I agreed to do one, the main instrument needed arrived in the post. An Echo smartpen, by Livescribe. It is a pen that records (when you write on the right paper) every penstroke you make digitally and you can play back that page elsewhere…It also has a microphone built in, and so what you can do is play back the writings/scribblings/drawings, along with the sounds that were playing at the time you were drawing. You can play them back right from the pen’s little speaker, or upload the whole thing to your computer or to the web and have the whole thing playback there. It is an excellent and powerful tool. The people who make this are heavily advertising it to students as a tool for studying, which I don’t have a problem with, but a lot of the sense of the marketing (and discussions I’ve seen on the web) seem to hint that it is somehow a magical substitute for actually learning how to take notes, since you are recording the lecturer’s voice… That I do have a problem with. Making good notes is an important skill and the act of paraphrasing and distilling what is being said is vital to learning… it is arguably the most important stage now, given that students seem to have less and less time to re-work and supplement the lecture’s material in their own non-class time… These pens should supplement that process, not substitute it… Like all tools, they need to be used properly for best results.

But anyway… Where was I? Yes, so the pen arrived, and I experimented with it a bit […] Click to continue reading this post →

Boxes

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Some more Feynman diagrams from quantum electrodynamics (QED), with squiggly lines representing photons and straight lines representing electrons or positrons (their anti-particle), depending upon which way you read the arrows. The process represents an entirely quantum process, with no classical counterpart, of light scattering off light. You can read the diagrams any way you like, running time in your chosen direction, and you’ll get a sensible story. For example two photons approach […] Click to continue reading this post →

Premiering…

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Well, it is a week full of premieres, it seems, all with a little personal flavour for me, but possibly of wider interest. I’m talking about two TV shows and a movie.

The movie is going to be out in theatres at the end of the week, and it is called “Being Elmo”, co-directed by Phillip Shane and co-written by Phillip Shane and Justin Weinstein, two friends of mine who are flying into LA for the premiere. It is about Kevin Clash, the guy who operates the Elmo muppet. In short, it is a film that people seem to be really enjoying (it won the special jury prize at Sundance, and was a finalist for the Humanitas prize), and I can’t wait to see it! I worked with Phil on a two hour Einstein special that aired on the History Channel a while back (see Equation Wrangler), and so I know his working style a bit, and the results are great – so I think this’ll be really good!

The new Nova mini-series based on Brian Greene’s second book “The Fabric of the Cosmos” begins this week. They do a very good job, working closely with Brian to produce a show of rather high quality. I hope they do a good job (as you can see from the picture, they’ve got Brian to reveal his superpowers on screen – we’re not supposed to do that Brian!). It should be interesting to see, I think. I can’t recall if I mentioned, but I filmed some contributions for it last year, and some of that will be in the first episode (and I think the fourth). (You may recall that they extracted some of my interview […] Click to continue reading this post →