Author Archives: Clifford

A Short Cut to Mushrooms (Again)

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Yeah, I know I’ve used this post title before, but I do love it. So… sorry.

One of the things that really sets my week up nicely is my Sunday visit to the Hollywood Farmer’s Market. Today was an exceptionally nice day for it, but weatherwise and just the overall atmosphere of the market. The people making their food purchases and simply socializing, the vendors, the many musicians (even the corny ones sounded really good today), and of course – the food itself.

One of the highlights for me today was a new (ish) vendor, specializing entirely in mushrooms.

mushroom_stall_1

The variety was fascinating, and I stood there with a friend sniffing and sampling for a while (encouraged by the vendors, I hasten to add) before purchasing a lovely persimmon enoki (the ones in the middle of the first photo):
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Organized Skepticism

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(The title is an important way of thinking about what science is all about, at least in part. It is one of the things mentioned and discussed in the lectures discussed below.)

martin_reesThe annual Reith Lectures at the BBC over in the UK are under way. This year, they are given by a giant of astrophysics, Sir Martin Rees. I strongly – very strongly – recommend listening to these lectures. There are four of them. Of the senior superstars of science who I’ve come to know a little, Martin Rees comes across as one of the most gentle and quietly thoughtful I can think of while at the same time being sharp and insightful on all sorts of aspects of science (not just the confines of his field). I mention these characteristics since they are of great value to me – I tend to be repulsed by the practitioners of the more arrogant style that is also common in prominent (and not so prominent) scientists, no matter how good their science might be. He’s the President of the Royal Society, the Astronomer Royal, and the Master of Trinity College (Cambridge), among other distinctions, and so naturally is called upon to express views on a range of topics about science, including how it intersects with society.

Indeed, the intersection between science and policy issues and society is the subject of the first of his lectures. The whole series is called “Scientific Horizons”. The first […] Click to continue reading this post →

Formal Physicists

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Since (as high energy theorists working on foundational issues for most (but not all) of our effort) we can be called by some “formal” physicists, or physicists who are concerned with only “academic” issues, I thought our outfits in this picture from last month were quite appropriate*. (Now don’t you just want to hire this dream team to swoop in and solve all your problems? Click for larger view. )

faculty_and_students_at_graduation_phd_2010

Backstory: Some of the students in the group did a bit of pomp and ceremony to receive their Ph.Ds, and some of the faculty joined in.

Hilarity ensued.

-cvj

(*Of course for all you know, some of us were wearing sequinned bikinis under our gowns. That’s only formal wear in Vegas, I think…) Click to continue reading this post →

Summer Reading: Of Bookstores and Lemon Cake

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There’s something enduringly lovely about local independent bookstores. I love stopping by to visit them, try to give my local ones the first shot at supplying me with a book I’m looking for, but most of all I value them as community centres at the heart of the villages (real and virtual) that exist in our neighbourhoods, even in a vast city like Los Angeles. People gather and linger at them, bonding over the written word for the most part, but sometimes just for the sake of gathering and lingering. In that role they are a lot like public libraries, another favourite of mine. Much of what I said can apply to the large chain bookstores too, but somehow I find them less likely to have that community feel that independent stores have. I’m not sure why (location? focus? less of a personal touch in the organization of the material?), but this is the way it seems to me. (I’m speaking about the USA; the feel of bookstores is different to me in different countries.)

aimee_bender_reading_3Last night, after a quiet evening meal after a long day of working on the Project, I went for a nice long walk, heading to Skylight books in Los Feliz. (That’s the neighbourhood at the base of the hills of Griffith Park, in case you don’t know.) My friend and colleague Aimee Bender was launching her new (long awaited) novel “The Particular Sadness of Lemon Cake”, and I thought I’d go along to support the launch, hear about the book, and absorb a bit of the buzz. And buzz there was, since in addition to […] Click to continue reading this post →

CDF Says No

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Recall the excitement last week about the D0 result? I wrote a post called “An Exciting Asymmetry?”. Well, there’s a rule that says if you write a title as a yes/no question, the answer is often (usually?) “No”.

Sure enough. over at Resonances, Jester reports that the CDF experiment, also at the Tevatron, has looked for a confirmation of the CP violating result that D0 claimed to see, and did not find anything abnormal where it should have. Find further details (on the technical side for the experts) and links at that post, which, as is usual with material from that blog, is well-written and interesting.

This is one reason why we (the particle physics community) build multiple detector/experiments on the same accelerator machine, and this is a prime example […] Click to continue reading this post →

Alternative Synopses

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Will is annoyed by the Karate Kid (2010 version, not the 1984 version), not the least because with Jackie Chan involved, you’d be expecting… Kung Fu right? Weren’t we supposed to have stopped confusing the forms back in the 70s or so? People are up in arms about this all over the web it seems. I’ll lay off the whole thing since I’m not an expert in the etymology of the terms anyway, but more to the point I’m just tired of having my childhood memories cynically smacked around by pointless remakes, if the truth be told.

Anyway, to help himself vent, Will wrote some amusing synopses for other remakes Hollywood might do where the details are… modified. Here are a couple I liked: […] Click to continue reading this post →

The Runaway Black Hole

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In recent years there was all the nonsense about how scientists were going to accidentally make a black hole with the Large Hadron Collider that would runaway out of control…. we would not be able to stop it. We scientists would have tampered with the murky depths of Nature and awoken a monster we could not control. Naughty scientists that we are. The LHC has been colliding away at unprecedented energies, and last time I checked (you can too – click here) we’re ok.

gusher_oilI just realized something. Now we do have a runaway black hole! But it was created by naughty engineers, tampering with the murky depths of Nature and awakening a monster they cannot control. That gushing well 5000 feet below in the gulf of Mexico is a black hole […] Click to continue reading this post →

Nostalgia

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aollogoAOL is 25 years old today! Twenty Five! To help you understand that, those of you who where alive then click here for the list of number one songs in the charts at the time… Yes, Wham!, Tears for Fears, Huey Lewis and the News, Phil Collins, Jan Hammer, etc… Do you remember America Online? Dialing up to connect? (Perhaps some of you still dial up, to read this blog?) Ah yes, memories. I was never an AOL subscriber. I was, after all, not in America until the 90s, and only started connecting from home in that decade. By then several companies offered dialup service. Then I was of course, just like everyone else, familiar with the reassuring dialup noises to the point where by ear you could tell if the connection was going to work or not (huh, I just realized that sound is sort of from the same swatch of sounds as the TARDIS noise), and recall the sitting and waiting for files of just a few hundred kilobytes to download, and so on and so forth. (Amazingly, and wonderfully, we are now at the point where people are streaming movies and tv shows directly to their homes on their web connections.) The speed difference became a way of measuring the difference between work and home, in a way. At work, you had tons of storage space and perpetual connectivity, and once got home that went away. So waiting for data to squeeze through the telephone line using dialup was extra frustrating.

Truth be told, there’s a piece of me that does not mind that difference, at times. Being connected all the time at home – fast and conveniently – can bring down the […] Click to continue reading this post →

Another Hole in Pandora’s Box?

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05classic05lNo doubt you’ve heard it all over the news. Craig Venter and his teams have created another press storm, this time about “synthetic life”, although I wonder a bit about the meaning of the term. I’ve no particularly insightful things to say about it all, other than to do like everyone else and watch and wonder where it’s all going to lead (probably not exactly where people currently think… is one thing we can say for sure). There’s coverage everywhere so I don’t need to point, but for future reference, here’s a Guardian link to a video of the man himself talking about it in some detail, and a link to a story by Ian Sample in the same paper. There you can find links to the research paper too. (Image at right is of a pithos, the kind of vessel Pandora opened in the Greek myth. The image is from the online component of the Michael C. Carlos museum at Emory university. Click image to jump there.)

Truly fascinating stuff to say the least.

-cvj Click to continue reading this post →

An Exciting Asymmetry?

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A big mystery in physics is why there is more matter than anti-matter. (Of course, which we call the matter and which we call the “anti-matter” is a… matter of convention. Take your pick.) It is hoped that there is some mechanism in the laws of physics (at a very basic level concerning particle interactions) that will become apparent that explains it. It’s also hoped that the mechanism itself might have some understandable origin too. The mechanism would operate in the first tiny fractions of a second of the universe’s life when the primordial soup of particles and antiparticles (created from, roughly speaking, the energy of the big bang) began to cool down as the universe expanded. Rather than them annihilating all back into energy again, the mechanism would create an imbalance between the two, giving rise to a matter-filled universe, from which we emerged. So what could be the mechanism, can we isolate it in our theories and in our experiments? Build a good model of it? Explain it?

This is all very first and foremost in people’s minds when there’s a new experiment switched on that is probing the unknown – the Large Hadron Collider. Well, actually, it has been recently announced that a suitable mechanism (or, more precisely, its […] Click to continue reading this post →

Greetings!

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passion_flower_pairGreetings of the birthday sort to my younger nephew.

I made a card for him out of these lovely passion flowers (click for larger view) from my garden, and I posted it, but apparently there are postal delays due to volcano ash and so forth, so it might not get there in time.

So this blog post is to serve as a card and wish him Happy Birthday.

Happy Birthday!

-cvj Click to continue reading this post →

Venus at Midday!

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[Update: That really hurt. Hard on the neck. And could not even find the moon… I think there’s left over moisture haze high up. 🙁 ]

I just learned from Phil’s Bad Astronomy blog that apparently there’s a great opportunity to see Venus right in the middle of the day, and today is rather optimum for it. I’m going to try and see if it works. At about 1:00pm (sorry those of you for whom the sun has already gone way past that), look for the sun and then the thin crescent moon will be about three fist-widths to the left of that (if in the Northern hemisphere – right otherwise). Venus will be visible just to the right of that crescent. Phil has a diagram up on his site, here. This is all supposed to be possible with the naked eye, and I imagine you can help things a lot by holding your palm up against the sun to stop the brightness from that direction, and then waiting a bit for your eyes to relax into the viewing of the area of the sky I mentioned. Phil also mentioned binoculars. I’d seriously suggest trying without them, if you can, since accidentally looking at the sun with them is something I want to strongly urge you to avoid. (If you must use them, put something like a building or a large tree trunk in front of the sun and don’t change your footing…)

Good luck! I’m going to try in a couple of hours. Let me know how it works out for you, if you like!

-cvj Click to continue reading this post →

New Beginnings

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It has been a wonderful Spring for me so far, I must say. On many fronts. For example, work is trundling along steadily, with small but regular landmarks in my project being set and met, and the garden is planted with lots of new vegetable plants that carry promise for tasty treats in the months to come. In the mornings the garden has a cacophony of sounds from all sorts of birds, all determinedly busy with whatever it is they think needs to get done that morning. It is good to start that day hearing all that activity. mourning_doves_2(Fully half of that sound comes from a remarkably energetic Northern Mockingbird that manages to run through several distinct birdsong choruses at high volume while flying from tree to tree in the neighbourhood. It is almost as though it is trying to create the illusion that there are several mockingbirds in residence…) In the photo you can see a pair of mourning doves (the same pair I think I spoke about earlier), surveying the activity in the air and on the ground below.

There’s a feeling of promise, hope, and growth all around at this time of year. It’s everywhere. A nice surprise waited for me early last week. I was filling the kettle at the sink for my first cup of tea of the day one morning and noticed something green […] Click to continue reading this post →

But is it Real? (Part One)

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After my colloquium at UC Riverside some weeks back, I was asked an important question I’ve been asked before, and no doubt will be asked again. The same question may have occurred to you given things I’ve written here about the subject of my research concerning applications of string theory (particularly, ideas from quantum gravity) to understanding (relatively) recent experimentally measured phenomena. (The technique of “gauge/gravity dualities”: See also the special Physics Today May issue with articles on all of this. I wrote about that here. It tells you some of what we can and can’t do with the computational technology, and prospects for improvement, etc.)

So the question is “Is it real?”. This is particularly referring to the black hole in the discussion. Recall, one computes properties of new novel liquid phases of matter (that seem to be closely related to what shows up in the lab) by using a toolbox that involves the equations of gravity, in a higher dimensional spacetime, and much of the thermal nature of the system is controlled by a black hole solution of those equations. So people want to know if that black hole is real. A version of the conversation is like this: (Imagine I’ve already introduced the technique, the higher dimensional spacetime, and the black hole…)

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