Asymptotia

Ack! It is September already. Somehow the last few days got away from me and I prepped a number of posts, but then they did not make it to the blog. One of them was another followup to the Friday iPad post (see also here). I wanted to show you one of the things I did in class on Wednesday. Recall that I am experimenting with using the iPad with Note Taker HD in class to simply sit with the students and work through solving problems with them on “paper”… a sort of fireside chat, if you will. The first experiment was on Wednesday, and I did it a little slowly at first, but I think it’ll be just great. Bear in mind I’m just scribbling with my finger here… I think I’ll try using the stylus I got the other day for variety. Click for larger versions.

Continue reading ‘Scribblings’

Well, there was a lot of interest in the iPad discussion I started on Friday, with hundreds of people viewing the post, and several interesting comments either put after the post or sent to me in email. Note taking to the device via handwriting seemed to be a major thing that people are keen on, and I admit that it is also something that, as I said in the Friday post, made me see the device firmly as a primary work tool here on out. But some are unsure, perhaps unconvinced. So, I decided to reply to many of the comments by writing a letter, including a diagram of sorts. I did it on screen, while riding the bus home, using the excellent program Note Taker HD that I told you about in the post, mostly in “edit 2″ mode, allowing for compact and relatively neat writing with just my finger. Here it is (just click on an image of a page for a larger view, and be warned that a few full stops (periods) at the end of sentences did not show up so well in the images):

Continue reading ‘A Letter For You…’

So I had a big payoff.

The War has dragged on for a long chunk of the Summer, with attacks on three fronts, air (Flitty), ground (Slinky), and, most annoyingly, tree (Fluffy). While I do counterattack, including pointless and potentially embarrassing bouts of fury that see me rush outside early in the morning, sometimes in various states of undress, waving a broom, towel, pan, cup of tea, machete, or whatever I can lay my hands on, most gain is made by thinking through useful purely defensive countermeasures (perhaps in another post I will share with you a rogue’s gallery of the results of other countermeasures - see e.g. here). These were first laid on in July, while the figs were still far from interesting to the enemy, and also while they Continue reading ‘The Rewards of Countermeasures’

One of the things I’ve been meaning to tell you about is my recent explorations of the capabilities of the iPad. I’m extremely impressed with it, and want to tell you a bit about how I use it in case it might work for you. There is a lot that is being said out there, and lots of yelling and whining about what it is not, and so a lot of people are a bit confused, it seems. I’ve a nice chunk of time here on the bus, heading home from my first day back on campus, just after the end of my first class of semester, where in fact I used the device a lot, and so this is a good time to begin to tell you a bit about it.

Bottom line? The small bag I carry that you can see in the picture to the left contains everything I need for a huge number of day to day work tasks, for the research, teaching, and administrative tasks that are part of the standard Professor gig, and a whole lot more. It is all I carry, even on a longer business/work trip.

The main complaint that a lot of people had was based on dashed expectations. Lots of us, and I include myself in this camp, wanted Apple to produce something like a tablet computer. A “real” computer. One that you can program and so forth like you might do your laptop or desktop, or at least run a lot of applications that are considered the business of serious computers these days, even if not writing machine code or C++ or FORTRAN…(You know, the stuff of Real Programmers.)

So typically, when the iPad is discussed, people give a list of queries about what they want it to do, and if it does not do those things, it is dismissed as a toy, essentially. End of discussion. You can find lots of shouty discussions about the iPad on the web, with lots of accusations about how Apple let people down, and the phrase “dealbreaker” being tossed around as though its some discussion about dating criteria. Ok, so the iPad might not work for you, but make sure it is really for the right reasons.

The bottom line, I realized after having my own list of disappointments, is that the more useful approach might be to figure out what sort of things it does well, and to not think of it as a failed laptop or tablet, but an opportunity to learn a new workflow Continue reading ‘My Office in My Handbag: The iPad as a Serious Work Tool’

I just noticed that last week’s episode of The Universe on Time Travel, which I told you about here and here, is available online on their website. Click here to learn more about the ins and outs of it, and I show you how to make one too! Kind of.

It is a difficult subject to explain, and one that must be tempting to Continue reading ‘Time Travel a Click Away’

One of the things I am very happy with from my recent explorations in Vienna was my proper discovery of Egon Schiele. Somehow he’d not been on my radar before, and while I enjoyed looking at lots of rock-star famous excellent work by Gustav Klimt, it was Schiele who, out of the two, really captivated me on this trip. (More on another artist later.) So as to not startle you while eating your morning wheaties, I’ll spare you one or two of my favourite drawings/paintings of his that spring most immediately to mind, and instead show you the one on the right, which is very striking (Kneeling female in orange-red dress, 1910). He seems to have had a thing for orange/red, I’ve noticed. Or maybe it is I who notice it a lot in his work. I mostly love that many of his paintings are very much like line drawings with colour added, and since his line drawing work is Continue reading ‘Schiele Surprise’

It all happened so fast, I did not even get to take a picture for you. Yesterday morning, I woke up with the thought that I should clear some space in the, er, batcave/lab/hideout in order to make room for a lot of stuff that is currently in my campus office that is taking up vital room. I’ve a tiny office, so from time to time I have a space crisis. (I need to bring myself to discard tons of the old preprints (pre-publication papers) from the 80s and 90s that I keep mostly out of sentimental value, and then I’d be on top of things more easily, I expect. Lots of them are tied up with old notes on various projects, and so I sort of want to make time to archive those notes, separate them out from the preprints, and then discard the latter.)

I found that I could generate a huge amount of space down there by getting rid of a ton of old electronic devices. (Let’s just say I dismantled one of my doomsday devices and had lots of spare parts left over.) I looked up the one recycling centre I knew about for sure (remember me filming there last year, illustrating supernovae? See here, and here, for example) and found that one could only deliver things there if one was a Burbank resident, which I am not. So I did a wider search and found that there are various electronics recycling collection events arranged periodically in the region, and one of them was happening that very morning over in Sierra Madre! Inspired, I spent the next half an hour loading up the car, and after a quick breakfast was on the road at about 9:00am, carving a nice slice of road up the 2 toward the spectacular view of the mountains one gets, especially that time of day (it is something about the morning sun, I think, along with the rush of zipping up the pleasant slope of the traffic-less 2).

I anticipated an interesting scene, with lots of stations of different sorts for various types of items (computers there, VCRs there, doomsday device components there, Continue reading ‘So Fast…!’

Some of you will recognize the blue box in the picture on the left that I took recently while travelling. I have two things to mention in connection with it, but first let me mention that it is indeed what you think it is, but not really. In other words, it is in London (Earl’s Court), and it is a classic Police box (well, a modern relaunch), but it is not (as far as I am aware) also a disguised remarkable time machine owned by a somewhat eccentric renegade Time Lord. Ok?

Ok, thing number one. I don’t get the BBC America channel, but they kindly were dumping on to On Demand the episodes of the new season of Dr. Who, with the new writer and the new actor, so one day I thought I’d have a look. Just to get myself annoyed, because (sorry fans of its recent years) over the years I usually get ridiculously annoyed at how utterly stupid the show is, with lots of pointless running, and overacting, and cheap, crappy, silly plots and sets and so forth, and get even more annoyed when I remember it is mostly deliberate - we are supposed to enjoy the hokeyness in the spirit of nostalgia for the time many decades ago when it was on a super low budget but was ahead of its time. And I get more annoyed when I think that people abroad are watching this and thinking it is a prime example of great British television. Then I turn it off and ignore it for a year or two, and then do it all again. So anyway, I did that this time, back in the Spring. And guess what?
Continue reading ‘I Gotta Get Me One O’ These!’

This rather hot day sees me in more of a reflective mood, which is a rather good thing. I’ve been chipping away at the Project a bit, solving some issues concerning its final form, and looking around me and soaking up the Summer. I did some of that at Intelligentsia cafe before lunch, listening as I worked for a while to four filmmakers at the next table loudly plan a shoot, until I decided to switch to listening to music when it turned out that it was a porn film and they were exchanging ideas about what underwear the teenage star of the scene would be wearing and in what sequence it would come off. Don’t get me wrong, I’m not a prude, and certainly am not averse to underwear being removed in the right sequence and in the right circumstances, but it was distracting. And obnoxious. It is the price one pays for having coffee there instead of at Casbah, where the non-shiny people like me sit, mostly, but it is just too hot in the latter for me these days.

This is a very different day from yesterday, which saw me up at 5:30am, and then e-mail bouncing drafts of a paper back and forth with my collaborator Tameem all day until about 10:30pm, when we decided we’d done enough and submitted it to the arXiv. I focused on little else that day and did not leave my lair at all, so today is sort of an antidote to that.

Going on in background is a bit of preparation for the start of classes on Monday, the beginning of the new academic year at USC. I’ve been looking at a draft of a syllabus for the big class I’ll be teaching on introductory physics (for Engineering and Science majors). My class will have 100 students and the parallel one, taught by a colleague following the same syllabus, will be of similar size. So decisions about homework, grading policies, midterm dates, and so forth all need to be finalized by tomorrow Continue reading ‘Entangled’

Nope, I have not disappeared off the face of the earth. Sorry about the long gap between posts, but I got buried in several things such as contributing to the writing of a grant renewal proposal, settling back into Los Angeles (checking that some of my favorite things that you hear about from time to time on his blog, like the downtown art walk, the cafe at Bottega Louie, various other cafes, the Edison, etc, were all present and accounted for), and…. The Project.

Yes, the Project that I mentioned from time to time and, probably annoyingly, declined each time to tell you what it is. Recall from a post I did back in February that I essentially devoted my sabbatical semester, and the Summer that followed, to developing the Project, researching it, investigating the idea, seeing Continue reading ‘Prototyping’

The Perseid meteors are reported to be really good viewing this year.

As I said a few years ago in anticipation of a similar nice Perseid meteor shower:

Concerned that you don’t know enough astronomy? No idea in any amount of detail where these constellations are? Don’t worry! Basically, all you really have to do is find a place where the sky is reasonably dark, look [North] East, and wait. As your eyes acclimatise to the dark, and with a bit of luck, you’ll see some, and zero in on where to look.

There’s more at the NASA news site, from which I borrowed the image above. The peak is around these few nights (12th August or so) and there’s no moon, so if you’ve got some dark (ish) skies and a bit of patience, you should see some. Yes, this includes viewers in cities. Don’t be pessimistic. You might be able to find patches of dark enough sky, especially if you can go near to an edge of the city, or a park, and look away from the bulk of the lights. It does not have to be perfect viewing Continue reading ‘Perseids Galore!’

One of last year’s crazy Big Projects was filmmaking, you may remember. I just noticed that a little over a year has gone by since I premiered the first of the short science films I wrote, directed, co-produced… etc. Doesn’t hurt to look at it again. If you have a good connection, go to YouTube and select the option to watch it in HD and blow it up to full screen, and crank up the volume for the fun music!

Here’s Shine a Light:

It was brought to you by the NSF and USC’s iOpenShell Center. Visit the latter to learn more!

Don’t forget to share it! (Lots of people have viewed it (over 16,800 to date) shared it, and used it in their teaching, etc. It has been translated into a number of other languages, etc.)

Now, back to working on this year’s Project….

-cvj

Back in Los Angeles, things at home started on a rather pleasant note. I went out into the garden and picked four nice ripe figs off one of the trees, still warm from the sunlight. (Hmmmm… My nemesis, Fluffy, must be napping. Or planning something very subtle.) You can see three of them in my hand to the left. A fourth did not survive the wait period while I got my camera out of my luggage.

Sunday in Vienna was as interesting as Saturday, with more outdoor components than indoors since it was a lovely day, weather-wise. I wandered the city streets a lot, and spent a fair amount of time getting a feel for them, occasionally hopping on the subway (U-bahn) or a tram to nip over large distances, or to rest my feet. Other rest stops involved cafes for a beer, or a cup of tea, and a bit of people watching, reading, or other pleasant sitting activity.

Like Saturday, I saw a lot of art on Sunday, focusing again on Austrian artists primarily, and learning about the Secession movement in particular, and several of the characters associated with it. Fascinating.

I’ll do a post or two more on Vienna later on, I hope.

I left the city in the evening, heading for a brief stop in London before setting my sights on Los Angeles on Monday. Found myself in the amusing position of watching Continue reading ‘New Bounty, and Homeward Bound’

I gave my seminar at the workshop yesterday and said goodbye to friends old and new, colleagues, staff, and so on. Today is a hello to tourist mode, with me exploring aspects of Vienna. It is raining today, so it is a good thing that I’d planned to spend a lot of time looking at art indoors.

I’m resting in the cafe at MUMOK (Museum Moderner Kunst), between bouts of exploration of the exhibits. There’s a modern art and modern science (together, and of course modern means early 20th Century) exhibit on the upper floors. They have the usual chatter Continue reading ‘Outshine’

I just noticed, via this article at the Guardian, that not only has Edward Witten been awarded the Institute for Physics’ Isaac Newton medal, but his lecture at the ceremony has been posted online for all to see! See the link below. It is not often that you get an opportunity to see Witten, one of today’s giants in theoretical physics, on the public stage, to the extent that most people outside the field have not heard of him at all. The public view of who is driving forward and massively contributing to the field is rather skewed as a result of the number of appearances and grand pronouncements (often on subjects they’d be better shutting the hell up about!) from certain other renown theoretical physicists. So here’s an opportunity to hear from one of the true masters of the field.

When you speak to sensible people in the subject, whatever their own work is about and whether they like some of the things he works on or not (such as string theory), they will quite readily concur that he has done a huge amount for the field, driving forth many powerful ideas, sharpening the way we think about certain kinds of problems, conceiving of new ideas, and overall strongly influencing much of the basic manner in which practitioners think about the physics they are doing. Often, even if he is not the originator of a particular Continue reading ‘Witten at Your Fingertips’

Vienna. (Yes, the 80s song’s refrain did ring in my head as I arrived. No, I still have no clue what the lyrics mean.)

I am at the Erwin Schrodinger Institute (named after one of the co-discoverers of the modern Quantum theory upon which so much of our science and technology depends, in case you were wondering - he with the cat) for a while. There is a workshop here on the study of aspects of nuclear physics using holographic methods from string theory, a topic I’ve told you quite a bit about before. This is week one, and there are some longer survey talks that have been put on to set the scene and get everyone on the same page. It is an excellent way to start a workshop. As a bonus, present are some of my old friends from my postdoc days who I last saw in Madrid earlier this year, Karl Landsteiner (one of the organizers) and Esperanza Lopez, (you may recall me chatting a bit about those days in an earlier post), and, as icing on the cake, to my surprise Rob Myers, a friend and collaborator from even further back, is here too.

It is not just about old friends and colleagues, but new ones too. I’ve met and re-met Continue reading ‘Oh Vienna!’

Perhaps ironically, since I tune into BBC Radio 4 every day when in Los Angeles, I’ve not been listening to it or any other UK radio or news source while here in London at all. So imagine my pleasant surprise on Thursday when I came across what clearly looked like a docking station for bikes (as opposed to super-fancy bike racks, which I thought it was at first)! Sure enough, once I got closer I confirmed it - a bike sharing scheme was starting in London. By the next day I saw some more stations on my walks, and a truck driving along full of the bikes, presumably going to load up the stations. As it turned out, I learned later that the scheme started that very next day, and today I saw several people out riding on them!

I am a little disappointed about one thing. I wanted to try them out and be out there seeing the streets of the city from one of these bikes instead of on foot (as I have been doing a lot in the last several days), but guess what? Continue reading ‘Come On LA!’

These stairs have a lot of significance for me. They are at Dartmouth House, just North of Piccadilly, in London’s Mayfair district. There you will find the home of the English-Speaking Union. The ESU is a charity that has an interesting history, all based on promoting friendship, communion and understanding amongst the English-Speaking nations and people of the world. This might seem an odd thing to build an organization on, but it might make more sense if you read the history. In any case, there are so many organizations of all sorts doing things, and in the scheme of things this is as good a reason as any to bring people together. The ESU administers a number of grants, fellowships, and scholarships, among other things, and one of them is the Lindemann fellowship. It is a one year postdoctoral stipend that you can get fresh out of your PhD, and it is designed to give young people a taste of America. It is highly competitive (only a couple are given out each year), and the final decision is made on the basis of an interview. You come up these stairs, all nervous and under stress since it is probably the first major interview upon which your career might depend, and the surrounding fancy parts of London may have helped make it all weigh a bit on your mind. You wait at the top of the stairs near the piano and listen for your name to be called and then you are ushered into the room and put in front of the interview panel.

I know this since I was here in 1992, being interviewed. I had set my sights on Continue reading ‘The Scary Stairs’

As part of a report on a study (or several studies) I was writing last week (because evidently I can’t find enough things to keep me from making progress on the Project), I was including some data on the geographic distribution of members of the National Academy of Sciences within the US. The focus was on Physics, Astronomy, and Applied Physical Sciences. It was rather interesting, binned by state, especially if you grab the columns and tell Numbers to throw up a graph of it all. The concentrations are striking. I wondered whether the concentrations were simply following population, at least roughly, and so I went elsewhere and grabbed the population numbers for each state and ran that into a chart as well. I’ll leave you to draw your own conclusions as to the results. I find them interesting. Look at California, Texas, and Florida, for example.

You can look at the membership data (and slice them to your liking) here.

-cvj

I find myself in the odd situation of being in a pub in London well before 9:00am, having breakfast. No, things have not got so bad that I’m resorting to alcohol so early in the day, you’ll be relieved (I hope) to hear. (Things are good, on balance. Thanks for asking.) It is just that I took a rather strangely timed flight over from Los Angeles that meant that I was flying during peak waking hours in my body’s internal clock, and then arriving at 6:30am London time. This meant that I did not do my usual trick of getting at least some sleep on the flight…. So I find myself in London bright and early - way too early to check into my hotel. I’m groggy and hungry. Happily I found a pub Continue reading ‘Pub Breakfast’

So I mentioned recently that we’d been filming for the fifth season of The History Channel’s The Universe, earlier this month and during some of the previous two. Well, I learned the other day to my surprise that the new season starts airing next week!

On Thursday 29th July at 9:00pm (8:00pm central, but check local listings) the first episode will air. It’s a survey of some of the wonderful things in our solar system. You can find a synopsis here.

Now do you remember that I did a post at some point about being filmed in 3D, and Continue reading ‘The Universe Returns - In 3D!’

Well, I got some. I recall blogging about seeing these some time back, and am impressed with them now that I’ve been trying them out for a week. Let me say however a couple of things. I’m not going to spout all the stuff being said about how this is all so much more “natural” than shoes, and so on and so forth. There’s a lot of that being said and I find myself generally deeply suspicious of the way the word “natural” is used to sell products, especially to a certain type of crowd who falls for this stuff. What does “natural” even mean, anyway?

I like these because they are like being barefoot without the pain and discomfort that often comes with it (stubbing toes, icky or sharp things underfoot, etc). I do not think these “five-finger” shoes (as they are called) will replace shoes for me in most circumstances. Apparently people are running in them, hiking, even mountain climbing. Good for them. I want much more support on my feet when I’m doing those things and that is why shoes were invented. Marvellous invention, shoes. Not clear to me shoes are any less “natural” than these are. They’re just different. Like cycling is not “natural”, but is a rather splendid thing humans came up with that I see nothing wrong with on the “natural” vs “non-natural” front.

See also shirts, pants, skirts, etc. Same thing.

But, in short - these are great. I was told by the fellow in the shop that they are becoming hugely popular now, although I am not sure I believe that since I’ve only ever seen one person out there wearing them, and that was a while back. (It is in shoe-sellers’ interest to make these claims.) I got them because I’ve a bit of a heel Continue reading ‘Ten’

Phil Plait of Bad Astronomy has announced what his super secret project has been. It’s a new science TV show for the Discovery Channel! It is called “Phil Plait’s Bad Universe”, and I imagine it’ll be a lot of fun and quite informative. There’s a trailer and some of his thoughts about the show here. I could not work out when it is going to air, so keep your eyes peeled*.

Enjoy!

-cvj

Continue reading ‘Bad Universe’

After spending more than half the day writing a report, fiddling with data gathering for the report, and dealing with various annoying issues in background over email, it is nice sometimes to be able to walk outside into the garden, pause to take a deep breath in the warm sunlight, and harvest some lovely tasty things.

Aaaahh…

I really need this sometimes. It is good.

Continue reading ‘A Vial of Calm’

In case you were wondering, things are moving steadily along in the search for the Higgs boson, and in the general ramping up to study entirely new frontiers of particle physics. I noticed a couple of interesting articles today that give you a nice sample. The first, by Dick Ahlstrom in the Irish Times, and is about the announced “rediscovery” of the W and Z bosons at the Large Hadron Collider, by a team working at the LHCb experiment. (I personally think that the term “rediscovery” is somewhat misleading since it makes it seem like the community forgot where they (the key signatures of the unity of the electromagnetic and weak nuclear forces at high energy) were since their discovery in the early 80s, but let me not quibble too much.) The point is that experimental teams are refining their searching techniques while sifting through all the new data being produced in the collisions at the LHC, and one thing you need to do before you begin to look for new things (like the Higgs) is to make sure you can find and recognize old things. Especially very important old things. Continue reading ‘Happy Higgs Hunting’

The experiment seems to have been a success.

Some of our best people were on site working on diagnostics. Here’s one of them engrossed in their work. (Photo on the left. Click to enlarge.)

In short, they vanished like, er,… Hot cakes.

-cvj

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Well, this morning I did an experiment. It began with zesting some lemons from the garden, and rapidly got into the business of mixing cupcake batter (recipe here - big on the lemon zest this time, and some of the juice), to make cupcakes… then melting chocolate (7 oz), pouring it over whipped butter (1 cup!), folding in some confectioner’s sugar (three cups or so), and a few drops of vanilla essence…. to make a chocolate frosting. More photos below, which you can click for larger views.

This (and my dutiful munching on tester cakes that ensued this morning) was all in aid of a nice test of a lemon cake plus chocolate question raised earlier. You will recall from an earlier post that author Aimee Bender’s reading at Skylight of her new Continue reading ‘Lemon and Chocolate for Breakfast’

Ah. Well, I was reserving the title of this post for a followup post to an earlier post about physics research. But, the film I went to last night at the wonderful Vista theatre was so engaging, and so excellently done - on the themes of dreams and memory - that I thought I’d use it.

Christopher Nolan has done it again! Inception (both written and directed by him) is yet another (remember my discussion of the Dark Knight two years back) example that shows that it is possible to make a big budget Summer Blockbuster that does not treat the audience as idiots. It tells you from the opening frames that you’re going to have to pay attention and think during the film, and that interesting ideas and themes are going to be explored, and it certainly lives up to that promise right through to the end. It is thrilling on all sort of levels, and for those who don’t care about ideas, there’s plenty of stuff blowing up and crashing into stuff to keep them happy.

I am going to say absolutely nothing more about it (more or less) since one of the Continue reading ‘But is it Real? (Part Two)’

Ah. Now I feel the Summer. We’ve been having a streak (starting Monday, or that’s when I noticed anyway) of quite hot days here in LA and, as usually happens above a certain temperature, I’ve begun to be in danger of shutting down. I tend to get perpetually sleepy in such conditions, and wake up quite early in the morning (which is good for avoiding the heat with an early start), and so get to sleep relatively early. During the day I’m going at half speed if I don’t manage my temperature properly. I’m not a big fan of just switching on and blasting the air conditioning the whole day, so you can say it is entirely my choice to have these issues. Instead, I try to manage good airflow at times of day when it is possible, and shield interiors from heating up under the influence of the sun. It works pretty well, but there’s a point in the middle to late afternoon where things Continue reading ‘I’m Melting, I’m Melting!’

No, I am not going mad. Well, no more so than normal, perhaps. The Green Zebra tomatoes are here, and they are lovely. (Click for larger view.)

Continue reading ‘The Zebras are Here!’

In the New York Times this week there’s an article* by Dennis Overbye on Erik Verlinde and his paper on the idea that gravity is not a force at all, but a consequence of thermodynamics. You can think of it as an extreme take on one of the directions a lot of the research (that I’ve mentioned a number of times has been going on in string theory) has been pointing, although I think it is safe to say that there’s a lot to be done on making the statement a concrete one that you can do physics with. I think it contains the germs of the right thing we’re all reaching for, but does not quite get there yet. We’re now quite routinely formulating some of the key physics of gravity entirely as physics of a completely non-gravitational dual theory - this is the content of what we call holography - and in particular the quantum physics of black holes in those settings get holographically mapped to the thermodynamics of the non-gravitational physics. This is the basis of the tools that we’ve been applying to studying aspects of phenomena showing up in various experimental systems in nuclear physics and cold atomic physics (and studies of phenomena relevant to various condensed matter systems are also being done). I’ve told you about a lot of this in various posts. (Some of them are listed below.) Running this the other way, the model non-gravitational systems (certain gauge theories at strong coupling and with large rank gauge groups) can be thought of as examples of how gravity (and space-time itself) is really an emergent phenomenon, appearing simply as Continue reading ‘Emerging Gravity’

Here are some clocks I saw at the House of Eleven Courtyards (Casa de los Once Patios) in the historic town called Pátzcuaro (at the aforementioned lake of the same name). It was a convent, and is now a place to go and see lots of arts and crafts in action, as well as buy some. The clocks, housed in copper, mark the entrance to an entire room of copper workmanship in various forms.

The clocks have reminded me to give you an update on something else. Through some of May and June, I did a lot of work for the show The Universe, which airs on the History Channel (as you probably already know from reading here over the years. See here.). There will be, as usual, several topics covered over the upcoming season, and it will be interesting to see how the various filmmakers put together their episodes. It is worth noting that the History Channel have done something remarkable here. This is now the longest run that any cable channel has had for a science show. They built an audience with a solid show, and kept producing good episodes and gathering more (and it is worth saying, an admirably diverse set of) viewers over the years.

In fact, the show has been so successful that they are going to, I predict, pay an Continue reading ‘Tales From The Industry XXXII: A Matter of Time’

Another shot of one of the Yácatas at Tzintzuntzan. (See the previous post for background information.)

Bizarrely, my Summer is all of a sudden threatening to transform from one of withdrawal into hiding to work on my Project to a much more travelled mode than I intended. The Morelia trip was intended to be my only exception (I agreed to it back in the Fall of last year and have said no to nearly everything else that came up), but in the last week or two (and the last few days in particular) several things have come up (involving travel) that I can’t easily turn away from. One of them would take me to Aspen (even though I decided not to go and Continue reading ‘Yácatas while Brooding’

(Top prize for the best name on last month’s trip.) This is the name of an existing town as well as the nearby archeological site, the subject of this post. On the Sunday I referred to in a previous post, several of the School went off on a bus to do some sightseeing West of Morelia. This is one of the places to which we went. I learned a bit about the pre-Columbian mesoamerican civilization, the P’urhépecha (or Purépecha), whose capital was Tzintzuntzan (place of the hummingbirds). The structures in my photos (click for larger view) are called Yácatas, which are on a plateau overlooking the lake Pátzcuaro. Continue reading ‘Tzintzuntzan’

Morelia is a beautiful city. One of the things that strikes you is the high concentration of architectural features that are either churches or related to churches (convents, chapels, etc) in the core of the city. The queen of these is the cathedral, which was across the street from my hotel (and gave it its name). Here it is during the day. The photograph was taken quite early in the morning to take advantage of the pleasant light (click for larger view):

It has fountains and gardens on both sides of it, and so acts as an all important Continue reading ‘Morelia Cathedral’

On Sunday in Morelia, Mexico, I was walking along the main street near my hotel and it seemed that something unusual was going on. The street was empty of cars, and some sort of event was going on. I saw a few cyclists here and there in the distance, but not the sort that look all hardcore and determined to go fast and determinedly on their way, but instead the more leisurely stop-and-smell-the-flowers sort. I wondered almost immediately if I had run into a local ciclovía, and a few minutes later, a sign confirmed this. Wonderful!

I’ve been waiting for such a thing to come to LA for a while now, since I heard of it last year when I part (and presented) in a public discussion downtown at the Artwalk about bike issues in the city, and had heard that it was becoming more widespread (it started in South America - Colombia) but it was an unexpected treat to find one right outside my hotel room! Here are three more picture. Click for larger view.

It was great to see lots of people out and about just using the streets with no cars Continue reading ‘Street Invasion!’

Well, here’s the first batch of the season (not counting the onesies and twosies I’ve nibbled over the last few weeks as I go by), representing four different varieties… By the way, my compost played a role in all this, so it is quite satisfying.

If the War goes well, I ought to get more of these soon. Several plants are producing tomatoes.

News from the Front? Fluffy has started the above ground Continue reading ‘Produce’

Well, my work at the Quantum Gravity school over (see previous posts here, here and here), I hopped on a plane yesterday, in order to return to Los Angeles. It was an excellent time. I enjoyed being in Mexico again, and seeing a new part of it (see posts to come), and the school was well organized and very enjoyable. The students were very receptive overall, and I spent a huge amount of time chatting with them about physics between sessions, over lunch, and on the bus back and forth between the campus and the city (and on the excursion on Sunday for a while). A number of students seemed very interested in some of the quantum gravity phenomena that are possible to describe using string theory - surprised in most cases (since the background independence issue that keeps being waved about by some as a naive (in my view) and bluntly used principle seems to have served as a block to many) - and it was a pleasure to be able to open them up to new physical ideas. It worked pretty well because I gave them three lectures on the basics of string theory, and so could build on that material in the one to one discussions to explain more detail.

Dynamical changes of spacetime dimension is one thing that captured a lot of interest, as well as string theory’s various ways of showing in model examples how spacetime is an emergent, classical approximation to an underlying quantum description that does not have manifest spacetime geometry. The latter is something that all approaches to quantum gravity hope to realize in one way or another (since those sorts of ideas and fantasies about what quantum gravity should be appeared in the mid 20th Century), and exactly how it emerges in string theory is a beautiful story. Who knows, perhaps they will take these hints from string theory about how quantum gravity can work and develop them Continue reading ‘Scenes from School’

In other news…

It’s a long story. You should refer to last year’s start of The Troubles, starting with the Great Tomato Atrocity. This year it began with the lovely tomato on the right… (click for a larger view).

At first I thought it was an early attack by Fluffy (in the 3.x series, presumably - I did battle with series 1 and 2 last Summer - especially since I’d deployed the first level of countermeasures already this season, the shields around the main tomato area of the garden.) Had Fluffy found a way past those? Would I have to fortify them? I was very annoyed since I wanted to make a gift of that tomato and had been admiring it every day since it began to ripen, waiting for the moment to pick it. Evidently mine were not the only admiring eyes. And my paws were not the first to get to it. So I decided to launch more level one of the offensive countermeasures, to test the possibility that something other than Fluffy was a work here. Perhaps one of Fluffy’s allies. The Fluffy series with less good PR: Slinky. I might need to be fighting a war on two fronts.

Seems I was right. Slinky is involved, and I caught one of its agents a day later. Peanut butter is a great bait… A picture of the result is after the fold. Don’t go there if squeamish!!

Continue reading ‘Victory!(?)’

This is a quick update on the school. I’ve been trying to give the students some of the core concepts they need to help them understand what string theory is, how it works, and what you can do with it. Here’s the really odd thing about all this (and an explanation of the post title): While this is a school on Quantum Gravity, after talking with the students for a while one learns that in most cases the little they’ve heard about string theory is often essentially over 20 years out of date and almost always totally skewed to the negative, to the extent that many of them are under the impression that string theory has nothing to do with quantum gravity at all! It is totally bizarre, and I suspect it is largely a result of things that are said and passed around within their research community.. So there are a few students here and there who have some familiarity with strings, huddling together at times for warmth in a sea of miscommunication, misinformation, and strange preconceptions. Let me be the first to point out that the string community also tends to pass on its prejudices about other Quantum Gravity approaches to its students. But my goodness it does seems extreme to me that an approach that has so many clear benchmarks of success (at achieving goals that at least used to be key objectives) in quantum gravity is treated as an irrelevant backwater by the community that thinks of itself as the main practitioners of quantum gravity. Odd. Anyway, my main message is to try to clearly show that the basics are quite easy to grasp if a student has a decent education in Continue reading ‘Minority Report’