Just a reminder: The USC Science Film Competition Showcase and Awards are tonight (March 7th) at 6:00pm. I’ve been tallying up all the judges’ input and have the results in special envelopes to give out tonight. Very exciting. Come along (event information here), and enjoy celebrating all the students’ hard work. There will be twelve films on display!
-cvj Click to continue reading this post
I don’t know. That’s a bit of a desperate title. But in exchange, a rather nice cloud formation, don’t you think?
This was from the sky over Los Angeles yesterday evening (a shot of the sky in the other direction is to the right – click for larger), and my first thought was “what’s the physics behind these beautiful structures?” There’s enough regularity here to expect there to be a mechanism, but I do not know what it is. Some combination of atmospheric conditions like wind speed, temperature, perhaps some layering of different bodies of air, and so forth, resulted in this and I’d love to know more. What factors set the roughly regular size of the structures, their pretty uniform distance apart, etc? (These are typical physicist’s questions, in case you’re [...] Click to continue reading this post
I’ve just returned from a rather wonderful two rainy days in Santa Barbara celebrating the work of Joe Polchinski. (See my previous post for more about this, including a few reflections.) It was a combination of high school reunion, group hug (with Joe in the center), and serious reflection about physics, now, back then, and to come. Now the great news is that pretty much everything was recorded on video, and so you can take part in it by settling down in front of your computer (or other device – those of you in the further (but pre-singularity) future can just instruct the appropriate plug-in from [
Cyberdine systems ] [ Tyrell Corporation] Google to stream directly to the vision centres of your brain) and view the various excellent talks and panel discussions here.
I had the honour of chairing (and contributing to) one of the panel discussions reflecting on D-branes (as I promised last post). The title was “D-Branes: Tools of the Revolution” and it went very well thanks to my three excellent panelists (Greg Moore, Andreas Karch and Samir Mathur) and many members of the gathered audience who contributed to the free-form discussion in the 15 minutes at the end. Have a look at that right along side the really interesting and lively discussion that Steve Shenker chaired at the end of the conference (which sadly I had to miss because I had to get back to LA through the rainstorm for another engagement). The idea there was to speculate a bit about the future of physics and thereby “Planning for Joe’s 90th Birthday“.
-cvj Click to continue reading this post
Early evening. Cocktail (made with Hendricks gin, muddled tangerine, and basil…). Roast pork on the way. Old haunt.
Where am I? At Roy’s, in Santa Barbara. I’m here for a two day celebration of the work of Joe Polchinski, one of the giants of my field. It all begins tomorrow, and I am taking the opportunity to have a quiet bit of time in an old haunt. I was a postdoc of Joe’s back in the mid 1990s, just when the world of theoretical physics was waking up to the awesome power of D-branes. D-branes are a special type of dynamical extended object in physics, and Joe had discovered their importance for string theory just around that time. Roy’s opened around that time too, if I recall, and a group of us became regulars, helping it along in those early days when it was smaller than it is now. (That small group included my friend and fellow postdoc Andrew Chamblin, who passed away some years ago.)
So I am here to help celebrate Joe’s work on the occasion of his 60th (hard to believe that number, frankly), and it will be good to see all the people who show up, and of course it’ll be excellent to see Joe. Part of my help in the celebrations is to organize and run a panel about D-branes, which will be on at 11:00 tomorrow. I’ll be reflecting a bit on the good old days when D-branes really broke, and turned out to be the key tool of the Revolution that took place in the field. In lectures and writings from that time and long after I used to refer to them as the Heroes of the Revolution, and in honor of that and of Joe I have named this session D-Branes, Tools of the Revolutionary, or something like that. Joe helped bring about the revolution, and his tools were D-branes, you see.
I was lucky to be here as a postdoc at that time, and happily I had the good sense to be quite sure that it was going to be important to quickly spread the [...] Click to continue reading this post
Apparently it was Introduce a Girl to Engineering Day yesterday, so some might say I missed it. But as you know, I think that every day should be Introduce a Girl to Engineering Day, so it is not too late! Have a look a website for it I found (here). What can you do? You don’t have to organise a huge event (although feel free to). It can all start small. Maybe for that next gift, consider (if you don’t already) buying your little girl (or someone else’s) a set of LEGO or an electronics kit (or other hands on building toys) instead of the (fill-in-the-blank-standard-girl-toy) everyone else is getting her. Go ahead and make it a pink kit, if you want, since that’s what society seems to want. Who cares what colour it is? Apart from buying, even just chatting a bit with a child about engineering in our lives, and all the people who can (and do) contribute to it would be a great thing to do.
Here’s a short film from our own Viterbi school of engineering:
[...] Click to continue reading this post
Good News Everyone!
The deadline for the USC Science Film Competition (now in its third year) passed, over the weekend. The good news is that I now have 12 films in the vault (a 50% increase on the two previous years), waiting for the next stage of the competition. They are on a wide range of topics, in a variety of narrative styles, and I’m super-excited to find a block of time and have a look at them. The next stage is judging, and I’ll be assembling the panel over the next day or two and letting them start looking at them and casting their votes.
So keep an eye out for more news soon. The showcase and awards ceremony is on the 7th of March, and I’ll be opening envelopes and giving away prizes with delight, I’m sure. I’ll also be posting films here on the blog for you to look at, once that date has passed.
-cvj Click to continue reading this post
I was about to do a little post about where we are in the General Relativity class. We’re about to start studying our first full non-trivial solution of Einstein’s equations. Then I had this feeling I’d done it before, so I looked, and indeed the very post I thought I’d do was first posted Feb. 13th 2008. So why not re-post it for your reading pleasure?
(First posted 13th Feb. 2008)
Well, only four weeks and change behind us in this course, and… the class (see here and here) is ready to understand this wonderful equation:
and all that it implies. What is it? It encodes the shape of spacetime around a spherical blob of mass of total mass M. No, don’t worry too much about the details, since this is not a lecture about General Relativity….. it is just nice (I hope) every now and again to get a look at the sorts of things we use in our day to day work. This “warped” spacetime encodes what we interpret as the gravitational field (in the old Newtonian language) due to a spherical (or, to a good approximation, almost spherical) mass. Like the sun, or the earth, or that tennis ball in the corner there*. It is an exact solution [...] Click to continue reading this post
So here’s a slightly weird thing. So there’s been all this excitement over the web about the old old “shocker” that the sum of the positive integers is -1/12. You know, not even an integer, and not even positive. Apparently there have been articles in the New York Times and Slate and goodness knows where else… and I’ve been ignoring it all since I’m tired of what it often leads to: People wilfully using it as a device to manipulate people’s ignorance about subtleties with infinite processes to make the tired point that string theory is somehow wrong since it is based on “funny math”. I called Lawrence Krauss (who should have known better) out about it some years ago when he did that at an event I happened to attend. It’s a bit tedious, not the least because it is actually part of a wonderful field of mathematics that can get misrepresented, and of course because it has nothing to do with string theory.
So I ignored it all. Then some students in my class asked me about it. And I explained why it is interesting and so forth… Then I carried on ignoring it all.
Then a day or two ago a mathematician colleague emailed me to ask what [...] Click to continue reading this post
In class tomorrow I’ll introduce one of my favourite equations:
… Wait – Where did everyone go?!
Come back! I’m not expecting you to know what it means, I just wanted to talk a bit with it sort of … nearby. If you consider yourself a bit intimidated by mathematics, be assured that it won’t bite. (No more than a piece of sheet music lying nearby will harm someone who has not learned to read music.)
It turns out that it is pretty geometry! In the equation, we’ve the object
called the “Christoffel symbols”. The set of objects (the “metric”) actually encode the properties of the space you wish to study (like the plane, or the sphere), and the equation at the top tells you what are the “straight lines” in that space. Well, in the plane (like your desktop) they are straight lines, while in other spaces they are the analogue of straight lines – if you want to go from one point to another point somewhere else in the space and desire to travel along the shortest path to do so, you want to follow such a line. It is called a “geodesic”. The equation is commonly called the geodesic equation.
You know such lines, intuitively, in a non-trivial example. Next time you look at a globe (wait, does anyone but me look at maps and globes any more? I love them!), you’ll probably see examples of those lines drawn in. They are the “great circles”, the lines of longitude, and the equator. (Image used with permission.)
I just made a class worksheet that guides one through a bit of playing with this equation to get the class excited about [...] Click to continue reading this post
On the one hand it is good to get members of the general public excited about scientific research, and so having some new excitement about something Stephen Hawking said, driven by gushingly written articles in the press and online, can be good. On the other hand, it is annoying that the thrust of the articles are largely that he’s stunned the world again with a brilliant and unlooked-for idea. People just lap this stuff up, unquestioningly. It is actually an old idea (and in fact one that is being mis-reported – see below). One’s instinct is to just say “Welcome, Stephen, we’ve been waiting for you to join us”, or “Come on in, the water’s lovely”, and just move on, but it seems so unfair. The thing that’s most puzzling in all of this is Hawking’s own paper (which is all of two pages of words – a transcript of a talk he gave in August), which makes no reference at all to (for example) Samir Mathur’s work, which has been explicitly saying essentially the same thing for well over a decade, with a very definite proposal for how it might work. That work has hardly been buried in obscurity. Samir and many other people who have liked his idea have been working out the consequences of the proposal in numerous papers for over a decade and reporting on their results at all the main conferences, and even talking to him about it (I note that Samir was in the audience during the August talk and even politely asked the speaker to compare and contrast the similar-sounding proposals). So it is puzzling that you get no hint from the paper’s citations that this is a well-considered and ongoing idea, even if (perhaps) in detail it may pan out differently from other suggestions.
What’s the idea?, you ask. Well, it is not, as you might get from most of the articles (somewhat confusingly), that black holes do not exist. It is that the black hole’s event horizon, thought of as a sharp “point of no return” boundary, may not exist. Instead, it is approximation or shorthand for the complicated physics (of both matter and spacetime) that happens in the vicinity of the black hole. Simply put, the horizon arises in classical solutions to classical (i.e. non-quantum) equations (such as in General Relativity) of gravity. (See an earlier post I did about them here, from which came the illustration [...] Click to continue reading this post
After a long weekend of a two-day meeting of an American Physical Society committee (hosted in LA this time, so I did not have to travel far), I decided last night to go and do a drop-in-and-draw session at an art studio, to clear my mind.
The model was excellent, with a smashing hairdo and good body-awareness that made for interesting poses. I was in the mood to disappear and listen to Hendrix for three hours while focusing on the simple task of representing what was in front of me. So I did.
I’m horribly slow again. Lack of regular practice (on full figures), of course. The good news is that I have been able to hold on to some of the more important foundations that allow me to lay things out, and see forms and shapes. But it does mean that I don’t get to get to some of the finishing processes that I intuitively prepare for in the earlier parts of the drawing.
As you know from many posts of mine on the subject (see e.g. here and here) I actually like incomplete drawings where you can see a lot of the process [...] Click to continue reading this post
Don’t forget that on the USC campus on Friday at 4:00pm, we’ll be kicking off the Collecting the Cosmos event! It will be in the Doheny library, and there’ll be a presentation and discussion first, and then a special opening reception for the exhibition. Be sure to get yourself on the waiting list since there’s some chance that you’ll get in even if you have not RSVPed yet. (The image is from the Visions and Voices event site, and includes parts of the artworks – by artists Victor Raphael and Clayton Spada – to be included in the exhibition, so come along and see.) The event description says, in part: [...] Click to continue reading this post
The new semester is underway and it’s off to a good start. I’m teaching the upper division class that I designed some years ago on General Relativity and got put on the course catalog here at USC. My thought back then was that since we are graduating streadily increasing numbers of talented physics students, many of whom are now going to the top graduate schools around the country, we really should have an opportunity for them to learn in depth about general relativity before they graduate. My thinking was also that it affords them the opportunity to not only learn about one of the most beautiful and important discoveries (almost 100 years old now) about our Universe, but also to learn skills and ways of thinking about physics and calculational techniques that they do not necessarily see in other classes. For many students it will be one of the last classes they take in physics as an undergraduate, and so they leave on a mind-expanding high note, off into the world to do wonderful things with their knowledge. For others who may take it the year before they graduate (or possibly even a year earlier) it may inspire them in their growing love and appreciation for all of physics in their remaining undergraduate years, maybe even help them decide to go to graduate school. More about all this here.
So anyway here we are. I’m happy to say that once again the group of [...] Click to continue reading this post
Holiday time is upon us, and in this part of it, it is coming up on Christmas time. Really fast, it seems. The semester sort of petered out mid-week for me with the submission of the final grades for my graduate electromagnetism class (everybody did really well… fantastic group of students this year), and one last two hour committee meeting for another of those committees I can’t tell you about. I’ve found some time to think about some physics, and work on a new page for the book, among other things. There’s a panel [...] Click to continue reading this post
…by lightning or anything. Yay.
It was fun! (See previous post for what I’m talking about.) The audience seemed to like it. I got to explain that being curious and doing experiments and forming hypotheses is somehow preferable (to some) to sitting back and saying “God did it”, and that there are a lot of nice side effects of that curiosity. (You know, increased food supply, improved medicine, better communications, travel, overall quality of life, and so forth…) We even got to talk a tiny bit about physics (somehow I got on to neutrinos…. not sure why, but then… why not?). [...] Click to continue reading this post
Well it is 6:30pm. It was my plan to take a nap this late afternoon (maybe early evening) but I’m not going to do that anymore. Why? Well turns out I’m appearing in a show this evening. It starts at midnight so I’m a little afraid that I might just sleep all the way through, wake up tomorrow morning and so miss my spot. So while the sleep would do me some good in order to be up so late, and functioning, I think I’ll skip it.
What’s the show? Well it’s a show on stage put on by some of the Upright Citizens Brigade. They asked me to appear as a guest – not as a character, but actually as myself, a scientist. It’ll be in front of a live audience, although they will be taping it later possible broadcast. You know how it goes with me – I especially like an opportunity to put some science out there here it is not expected so this is right up my alley. My understanding is that it’s a comedy [...] Click to continue reading this post
Finished the inks and threw some (digital) paints over the lunch group. I think it’s time to move on to another part of The Project. I’ve spent far too long fiddling with the light in this.
-cvj Click to continue reading this post
Actually, this new tool is pretty old school, and I love it! There are times when I want to have a change of venue while doing rather detailed work for The Project… perhaps go sit in a cafe for a change, instead of at the drawing desk. But when not at the drawing desk, I could not use the lovely large illuminated magnifying glass […] Click to continue reading this post
….In which Crystal and many of the crew chill out on the sofa after a long hard season of shows and express some of their gut feelings about the whole business. Well done on an excellent series of shows, Crystal, Patrick, James, and all the other behind the scenes people! (Warning: – This episode may not be for the squeamish!)
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Well, since yesterday was all about eating here in the USA (Thanksgiving, in case you missed that), I thought I’d share a partially inked panel from The Project, of a meal in progress. I got a bit of quiet time to work on it this evening, while listening to Jimi Hendrix and then Freddie Hubbard. They helped a lot. It is at times like this I wonder what insanity has come over me […] Click to continue reading this post
This episode of Fail Lab gets down to the bone of the matter: Failure. The whole point of this excellently conceived series was to look at the fail videos all over the web (as everyone does) and instead of just laughing at the people in them (as most people do), take a different path and try to see the positive in the failure. Sometimes with humour, and/or with tongue in cheek, but with an eye on looking at things a bit differently. Now this special episode turns and looks the issue directly in the eye. I have the honor of being a co-presenter of this one again, again with the excellent Crystal Dilworth, and this time we break the pattern and have yet a third person as a co-presenter – Adam Steltzner from JPL, the chief engineer of the landing stage of the Mars Curiosity mission, you might recall. Crystal and Adam are on the left. (You might also recall that we teamed up for an event earlier this year at the Natural History Museum…)
Together, we talk in the episode about the whole idea of failure, making mistakes, and of course, experimentation. We highlight how it underpins all innovation, scientific, technological, artistic… all corners of human […] Click to continue reading this post
Over on the USC Science Film Competition blog, I give some tips to the 35 (or so) teams registered for the competition. I hope they really pay attention… This could be a great year for the competition if they stay the course…
-cvj Click to continue reading this post
Fail Lab Episode 10 is available on Discovery’s Test Tube Channel, or on YouTube. It focuses on responses to dangerous situations. Crystal Dilworth and Heather Watts do a great presenting job once again, and as a bonus, the brain-dog makes an appearance this time!
Embed below: [...] Click to continue reading this post
I’m preparing some notes for my graduate Electromagnetism class, and I’ve finally arrived at the section on Special Relativity. We will end up discovering the fully covariant formalism of the equations of electromagnetism in a few lectures, and a number of mysterious things we’ve seen over the course of the semester will be more natural in this setting, showing how marvellously Maxwell’s equations from the 19th Century, unifying Electricity and Magnetism, actually herald (actually should out loudly for!) Einstein’s 20th Century physics – Special Relativity.
But first I must review Special Relativity, going back to the basic thought experiments I like to talk about that lead you to discover it. Traditionally this means lots of scenarios involving flashes of light, and long extended objects being boosted at speed in various directions and so forth… All very fun.
Well, over the years I’ve changed the characters in the scenarios a couple of times, and now I’ve firmly (as of 2012) left Harry, his broom, Hermione, and [...] Click to continue reading this post
Ever wonder what it is like to science consult for the entertainment industry? Read on. You may recall me mentioning in passing that I had an interesting time a while back on a sofa being interviewed by a cat, an owl, and a robot. Possibly you missed that remark, or tried to forget it!!! Well, the interview is now online, and you can enjoy it at your convenience. Embed below. The entirely spontaneous piece ended up being a humorous conversation that closely resembles a lot of serious conversations I’ve had with people trying to creatively mix science and a dramatic story (and in some depressing cases, documentary…) I try to help where I can, if I get the call in time! (Actually, to be fair, sometimes even the most bizarre creative free flow can end up being useful!)
The show is called Love Me Cat, and was created by Eric Kaplan, who does the voice of the cat, in collaboration with My Damn Channel. You’ll certainly know Eric’s work from things like Futurama and Big Bang Theory, for starters. I had a lot of fun on the show, and it was great to meet Eric, and all the
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So I’ve been a bit quiet as I’ve had a lot going on. This includes preparing ten interesting slides to use as props for a talk I gave this evening to the USC Philosophy Club. It was entitled “Ten Things YOU Should Know About Black Holes”. It started with the original idea by Michell in 1783 (yes, really, that early!) and ended with topics of current research (what is the fate of the singularity? What really happens at a horizon? Etc., etc…) I spoke for a while and then fielded tons of questions, and am now (I am writing a draft of this on the subway train home – uploading later) suffering from a rather broken voice due to too much talking and projection…. Gosh. But it was fun. A really […] Click to continue reading this post
Fail Lab, the web series on Discovery’s TestTube channel that I’ve been telling you about, is growing in popularity. People are hearing about its unusual charms as an edgy, funny, quirky, smart vehicle for some food for thought and are going to see. That’s great. There was a review on VideoInk today that seems to “get” series creator Patrick Scott’s “Zoochosis” point of view that informs his particular style of filmmaking, and that was good to see (although I don’t agree that the hard science can get lost sometimes – this is the online world where the viewer can take charge – if you miss an idea, just scroll back and watch it again. That creates opportunity for density in making intelligent programs, and hopefully steers us away from shallow, lowest-common-denominator programming).
Anyway, episode seven is now up, and fueled by a remarkable video it delves into ideas about how we relate to each other, within and without social groups. Here’s the embed: [...] Click to continue reading this post
You’ll recall that I was in New York a short while ago to film some promotional material for a new TV series. It is called Big History, and it will be on History Channel’s H2 channel (and eventually on various international channels, but I’ve no idea which – similar ones to where you find the other show I’ve mentioned a bit, The Universe, I expect).
Rather than be primarily about astronomical and cosmological things, the show will focus each week on one of a list specific items that have affected our history, and take the long view about that item. How long a view? The longest known possible! So take something like Salt, and examine its role in civilization and culture, bringing in historians, anthropologists, etc… and physical scientists to trace that object back to its roots in the early universe… (the big bang, the cores of stars, etc.) Update: For you Breaking Bad fans, note that it’ll be narrated by Bryan Cranston, by the way.
Here’s one of the promo videos:
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Managed to find a little time over the last few days to lay out, draw, and ink a page in The Project. It has been insanely busy for me, so this is a little bit of a triumph in stealing some time back. It’s actually the same seminar that you saw in earlier posts (here and here). Now it is over. It remains a tradition in our field to give a little round of applause after a talk, which I find rather nice and quaint. It was a pleasure to depict that.
It is a wider view of the room, which meant (aaaargh!) drawing even more faces and bodies than before. Then there’s the challenge of doing them in different states of attention, applauding, with different faces, bodies, states of dress, etc. When I come to paint it I’ll be wanting to pick colors that together communicate the right mood for the panel and for the whole page it is part of, and so forth. It can be daunting to do all those faces, bodies, shirts, feet, and […] Click to continue reading this post
I just spotted (a bit late) that Steven Weinberg (one of the giants of my field) has written a piece in the New York Review ofBooks entitled “Physics: What We Do and Don’t Know”. I recommend it. He talks about astronomy, cosmology, particle physics, and by casting his eye over the arc of their recent (intertwined) histories of ideas, experiments and discoveries, tries to put the Standard Models of particle physics and of cosmology into perspective.
The article is […] Click to continue reading this post
Fail Lab Episode 6 has a lot of things blowing up, so that’s good, right? We actually had a lot of fun mixing in a little bit of comedy with the science. (See an earlier post I did after shooting this episode.) I hope you have fun watching it! As a bonus, everybody’s favourite, petal the brain dog, makes an appearance again. Well done once again, director/writer/producer Patrick and his team for their work on making it such a visual treat – and James, it was fun to write with you and Crystal!
Embed below: [...] Click to continue reading this post
Friday’s meeting was rather nice. There was a really good turnout (especially from UCLA) and so in the end we had the perfect combination of an attentive and receptive audience and four really good speakers. As per design of the whole thing, plenty of time was allowed for discussion and pedagogy, and so I got the feeling that people felt really comfortable raising points during the talks and also chatting further during the breaks and lunch and dinner. It was really good to catch up with friends and colleagues from groups in the area, [...] Click to continue reading this post
Oh! I forgot to mention that the next Southern California Strings Seminar is today! It is being hosted for the first time by the group at UC San Diego. (Thanks Ken!) There’s a webpage with the talk schedule here.
Now, better head there….
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Creating a structure for benefit of the students (for no reason other than it seems like something that can do some good) – a structure in which they can participate entirely voluntarily, and after almost two months of advertising it, and showing up in all sorts of classes to tell people about it, doing interviews about it, and so forth, and not knowing if anyone really will be bothered to get involved… getting lots (still counting) of teams of students registering. With lots of enthusiasm in various emails! Thanks everyone! It’s going to be great to see your projects develop. I hope you enjoy collaborating on making films about science – it will stay with you throughout your careers as a hugely valuable and fun thing to have done. Thanks to those faculty and staff who helped me spread the word by circulating emails, letting me show up to your classes, suggesting ideas, etc!
Dealing with faculty and staff who, despite the jobs they hold, really don’t have much interest in a new structure put in place for the benefit of the students especially if it means even slightly going out of their way to help out… some would rather come up with mountains of reasons and/or rules why they can’t or won’t help, or why I’m making their life hell for asking them if they might. They helped make this all far more stressful and difficult than it really should have been. Ugh… is all I can say. UGH!
Meeting with a student today who is a freshman in physics. New to the city, new to the country, and new to this level of education. Enthusiastic about the subject and [...] Click to continue reading this post
I realized just now that since I set a midterm exam on Monday for the graduate electromagnetism class, and since there’s only one midterm for the class, it really is… midterm. The semester is sort of half over already. And indeed, a glance at my calendar shows this to be more or less true. I’ve mixed feelings about this since on the one hand it is a busy and tiring semester and I’m glad to have it go by, but on the other hand… slow down life! What’s the rush!? Yes, I definitely keep wanting to make sure I stop to smell the flowers, or what’s the point?
The midterm itself (Monday, in class) was fun. Or at least, I found it fun to put together on the weekend. There were no complaints from the students, so I hope that means I got the balance about right. We shall see during class tomorrow, when [...] Click to continue reading this post
Last night’s event was wonderful. The actors had such passion, and it was all done with great pacing and flow. This was a most marvellous play reading – the cast’s performances felt so fully inhabited by the text of the play that it hardly felt like a reading at all.
They (Nike Doukas as Margrethe Bohr, Arye Gross as Neils Bohr, and Leo Marks as Werner Heisenberg) and director Jack Rowe, should be very proud. They did very little rehearsal for this, which is makes it all the more impressive.
I gave an opening address* (and also introduced the evening**, as usual forgetting to introduce myself…) and the text of my address follows:
Good evening and welcome!
Yesterday, the Nobel Prize in Physics was announced. You might recall that it was for the discovery of the mechanism that gives all elementary particles their masses. A profound mystery about the universe was solved. While that’s a wonderful thing, and many people acknowledge that, many people don’t connect anything about that quest to understand the universe to themselves.
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I’ve been thinking about the early 20th Century recently, and the development of quantum mechanics, as a result of re-reading Michael Frayn’s play Copenhagen. There’s going to be a staged reading of it tonight at USC, put on by the School of Dramatic Arts, and I’ll be giving an opening address. I sat in a bar late last night over a fine oatmeal stout, thinking a little bit about what I might say in the address, and I expect I’ll put the finishing touches on the brief sketch of ideas while sitting on the subway to work this morning. We shall see. I’ll try to remember to post the text of it here if it turns out to be not entirely dreadful.
I’ve very clear memories of this play, and my first encounter with it. I was lucky to get to go to a special pre-opening performance of it when it debuted in New York (in the year 2000) I and got to meet and talk to Michael Frayn (and if I recall correctly, Claire Tomalin) about the writing of the play at the after-party at Sardi’s – a very interesting conversation it was too. I also (by a happy coincidence) got to sit next to Freeman Dyson during the performance, and was able to glance over occasionally to see the delight on his face at seeing old acquaintances of his brought back to life. (Well, I learned afterwards that this was the reason for the delight…)
(Image from Playbill.com) Click to continue reading this post
This morning the 2013 Nobel Prize in Physics was announced, and it was given to Francois Englert and Peter Higgs for the 1964 theory of what’s now often called the Higgs mechanism, recently directly confirmed experimentally by the Large Hadron Collider at CERN (as you might recall) by the finding of the Higgs particle. You might recall that the mechanism, also associated with the term “symmetry breaking”, is responsible for the masses of the elementary particles, as has been discussed here and elsewhere a lot. (And recall, that it has little to do with the mass of everyday objects, as people sometimes say. That’s a different matter… everyday objects’ mass is dominated by their binding energy… coming from the forces that hold them together… not the Higgs mechanism.)
The first thing to say is “Congratulations!” to the winners. It is sad that Robert Brout (Englert’s co-author) passed away before he could get the prize as well. A nice thing you can do is take a look at the actual papers that are central to the citation in Physical Review Letters right here, as the APS have made them specially available. It’s good to take a look at what the actual papers look like, to get a sense for how our field works, so go ahead. I also recommend the lovely book of Frank Close, “The Infinity Puzzle” for a very good presentation of much of the ideas and history of this and related chapters in the field of particle physics.
My own thoughts on all of this are mostly of delight, but there’s something else there as well. Without a doubt, it is great to see particle physics and the pursuit of [...] Click to continue reading this post
(Riffing on two earlier posts.) So I’ve been doing a bit of metalwork. I decided to make some adjustments to the frame of one of my several bags that fit onto the Brompton’s front bag attachement, to use it as support for a small bag. The metalwork involved me simply sawing off the side extended aluminium bars and leaving only the central part of the support frame. You can just see it in the enlarged version (click). There are times when I do not want to have a large bag on the bike, or even medium sized. Usually, then I have the small bag on my shoulder across the chest, and that works well, but nothing beats riding with nothing on your back or shoulder. So this is my solution, and one of my leather handbags fits quite well (with the aid of a strap I made from parts bought in a hardware store, and two tiny bungees with hooks, that you can’t see) on to the neatly detachable frame. Happens to match the seat/saddle nicely, all complementing the British racing green colour.
A very elegant solution, also allowing me to keep the bag on the bike all the time, still easily doing the quick fold, and to stably tow it when fully folded too (using the [...] Click to continue reading this post
I did an interview last week Tuesday with the channel CU@USC. It is a chat show, and so I did the sitting on the couch thing and so forth. All very amusing…
…And hopefully useful. I am spending many hours each day building awareness for this year’s USC Science Film Competition, an annual project you might remember me starting back in 2011, and stressing over a lot. And then again in 2012. It continues to survive for another year. This is year three, and although it has given me many grey hairs, I fight on, because I think it is of value to get students from all fields, whether scientist or engineer, writer or filmmaker, journalist or artist, to learn to collaborate in the art of telling a story that has science content. (Actually, learning to collaborate to tell a story about any issue of even moderate nuance is an important skill, science or not.) Anyway, the interview material is now up online and so you can have a look here. (The site uses flash, so might not work on some devices.)
I speak about the competition and also my own take on bringing science to film both fact and fiction (which for the latter especially is probably different from many others in that I don’t think it is always productive for a scientist in a film project to be [...] Click to continue reading this post