Author Archives: Clifford

Bringing Science to Schools

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Here’s a nice article (by Ambrosia Brody) about some of the work the Joint Educational Project (JEP), Women in Science and Engineering (WiSE) and the Dornsife College of Letters, Arts, and Sciences (all here at USC) have been doing to get school students excited about science. It looks like a fun and valuable program, and it is always great to see the look of wonder on the faces of the students as they explore (see film below). (Photo is by Nick Pittarides for USC News.)

A nice aspect of it that caught my eye is that one of the films that got made for the […] Click to continue reading this post →

Six Legs

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The other day I had a quick last minute task I needed to do. I realized that if I was going to get a sixth birthday card to my nephew in time, it needed to be posted that day, and by the 3:30 post. It was 2:00. I’d not made a card yet. Nor designed one. Pictures of roses were probably not going to cut it. No doubt somewhere on my hard drive is a picture of something I took, maybe even with a card for him in mind, that would make sense to use…. but it would take me longer to look for it than to simply think of something afresh.

So I stared at the wall for a while. Six…. six….. I wanted an image that somehow says […] Click to continue reading this post →

Revisiting Old Haunts

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Since you asked, here’s an update on The Project. I was a bit quiet on it the last two weeks with the end of semester duties taking up lots of time (setting finals, grading them, extra homeworks and so forth – see several recent posts). Just before that however, I did a bit of a push to finish some pages that I wanted to include in my presentation to the Los Angeles Institute for the Humanities (I mentioned that to you before – see here. It went very well by the way, with lots of enthusiasm from lots of those who were kind enough to attend.)

Over the four or five days I’ve started on a new aspect of the project that has led me in an interesting direction – revisiting some of the original pages I did, two years ago. I decided then that the best thing to do to learn what I needed to learn about production of a graphic novel is just to… produce one. So I set upon a prototype, learning lots of techniques along the way, making lots of twists and turns in developing the methods that worked best for me, and so forth. I’ve refined the route I take from pencil to final product over the time (I’ve described it to you a number of times here on the blog), and in addition, my basic drawing skills have moved along a lot too… Anyway, looking back, I see that the first few pages especially are quite dreadful, a combination of bad drawing and also the struggle with digital inking techniques that I decided to abandon in favour of old school nib pens and ink. (It is actually satisfying to see just how far I’ve come in a short time… fixing various things took a relatively short time compared to how long I’d have agonized over them back then…)

So since I want to show this prototype to people, I’ve decided to re-draw and […] Click to continue reading this post →

Heaven’s Parameters

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Oh… I forgot to get around to letting you know the result of designing the universe required in a previous post. The result is that it is a radiation (“light”) filled universe with positive cosmological constant [tex]\Lambda[/tex](and so space wants to expand due to negative pressure – much like ours seems to be doing). The radiation density wants the thing to collapse. There’s a balance between the two, and it turns out that it is when the two densities (radiation, and vacuum energy) are equal. This is only possible when there is positive curvature for the universe (so, not like ours), as you can see from the Friedman equation if you were that way inclined. So the universe is a 3-sphere, and if you work it out, the radius of this 3-sphere turns out to be [tex]a=\left(\frac{3}{2\Lambda}\right)^{1/2}[/tex]. The temperature of the radiation is then computed using the usual Stefan-Boltzmann relation.

The equality of densities turns out to result from the fact that the effective potential of the equation is at a maximum, and so this universe turns out to be unstable… It is a radiation-filled version of Einstein’s matter-filled static universe, which is also unstable. It is larger than Einstein’s by a factor of [tex]\sqrt{3/2}[/tex].

Einstein was said to have arrived at his static universe on the grounds of what he thought was observationally clear – the universe was unchanging (on large scales). […]
The equality of densities turns out to result from the fact that the effective potential of the equation is at a maximum, and so this universe turns out to be unstable… It is a radiation-filled version of Einstein’s matter-filled static universe, which is also unstable. It is larger than Einstein’s by a factor of [tex]\sqrt{3/2}[/tex].

Einstein was said to have arrived at his static universe on the grounds of what he thought was observationally clear – the universe was unchanging (on large scales). Hubble […] Click to continue reading this post →

Project Heaven

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This is an extra homework that some students of the General Relativity class did to make up for one that did not count earlier in the semester. While writing it, I realized that this universe is in fact, Heaven! You know, we become beings of light, and live forever, etc…

I thought it would be fun to share its final form:

“You work in the design section of the company that manufactures universes. (This is […] Click to continue reading this post →

Fractal in Progress…

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So last week we had a visit from Kelly Stelle (he’s part of the high energy theory group at Imperial College) who gave us an excellent talk about aspects of supergravity. His work connects to the fascinating ongoing story about finiteness, and the new techniques being used to do the multiloop computations (see a recent Scientific American cover story about some of that – it is misleadingly packaged by the magazine, as usual (preview here) , but the article itself, focusing on the computational issues, is nice).

After his talk, I gave him a tour of the campus, and as we passed through the Doheny Library to view the lovely interior, we stopped by the ongoing construction of the Mosely Snowflake Sponge fractal that I told you about here.

They’re making a lot of progress.

We spent a few minutes folding some business cards to contribute some component cubes to the construction, and I took a snap (see photo on left) of Kelly at work. We made two or three cubes each…

Here’s a shot of one of the completed modules […] Click to continue reading this post →

All My Loving…

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On the Red Line on Saturday (on my way to test out the Expo line – see earlier post) there was an unusual spectacle in one of the carriages. This woman had some headphones halfway on, and was singing Beatles songs at the top of her voice! She was at the start of “All My Loving” when I got on (I’ve written some of the lyrics down to remind me of the moment). After their initial surprise, people were doing that typical “I don’t see anything unusual” look, trying not to notice her by looking everywhere but in her direction.

I imagine they thought she was crazy. Perhaps she was, or perhaps she was just having an odd day, but for sure she was also just enjoying herself immensely, not […] Click to continue reading this post →

Now Arriving…!

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The new line rocks! I went down there with my Brompton on the earlier side of things, this morning. I took the Red Line and changed seamlessly to the Expo Line at Metro/7th, and it was an excellent ride. I really do think (as I said in the previous post) that this is part of a major transformation for the city. This is a transformation with regards things like energy usage, congestion, community, air quality and all those wonderful things public transport helps with.

Of course, at the outset there is something truly right, to my mind, about being able to easily connect from downtown to Exposition Park and the Science and Natural History Museums, the African American Museum, and of course USC – All major Los Angeles institutions clustered together and now connected back to the newly beating heart of it all. From USC, I can now easily connect to the music center, LA Live, MOCA, any number of my favourite restaurants, bars, cafes, and other places I love downtown, and then float on home on the Red Line, or off to Pasadena or Boyle Heights on the Gold Line. This is so exciting to see come to pass. I’ve been dreaming of trains running along Exposition Boulevard between USC and the Museums and the Rose Garden for many years now, and it is now a reality. Stepping off the train today at the Expo Park/USC stop was just magical.

I recorded some footage of my travels on it today for you and edited it all together into a ten minute film. You can see it in the embed below. Consider it an invitation to […] Click to continue reading this post →

Only Ten Hours…

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expo line trainOnly ten hours until the Big Transformation! The Expo line will open to the public at 5:00am tomorrow (Saturday). I think that this first major thrust to the West, connecting downtown to USC, Exposition Park and the Museums, and points West to Culver City, should be truly transformational for not just the locations involved, but the city at large.

I hope it will change minds about what is possible for public transport in Los Angeles in a huge way (the old “it doesn’t go anywhere” complaint will be heard a bit less maybe?), and connect and enrich all the neighborhoods involved. (And yes, on the personal side of things I hope it ends up, in combination with the Red Line, being better than just sitting on the bus all the way. We shall see.)

There’ll be a special schedule for this opening weekend, with the line (free to travel on for the two days) stopping at 7:00pm. I was a bit scared by this for a moment, […] Click to continue reading this post →

CicLAVia April 2012

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It was a perfect day for cycling, back on April 15th when the 4th CicLAVia took place. (Sorry it took me a while to report on it.) A lot of people turned out, and it was as good as it has ever been! We set of from the HelMel area again and went to Bolye Heights and back, breaking for an excellent lunch at Guisados again. Just like last time. The photo below featuring the 4th Street bridge over the LA River is my favourite single photo of the event this time:

Of course, there’s not just the one photo for you. I took hundreds of other great ones […] Click to continue reading this post →

Sidewalk Colours

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You see such lovely things along the side of the street if there’s time to notice. (Click for a larger view.)

This is one of the many reasons I often walk each day to and from the bus stop or subway station. You miss this stuff in a car (or sometimes even when on a bike).

By the way, I’ve updated my earlier post with photos from the LA Times Festival of Books, as promised.

-cvj

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