Category: Art

POV-Ray: 3d rendering

Giles Tran’s amazing rendering of glasses on the counter inspired me to check through my own POV-Ray generated library. Nothing nearly as good, but some of it is still might be useful.

Demonstrating the axial tilt of the Earth, this image shows the Earth at the northern hemisphere's summer solstice.
Rotating Earth at the northern hemisphere's winter solstice.

You build 3d models in POV-Ray and then export 2d images from whichever point of view you want, so once you have the model set up you can easily change the perspective or even move objects to create animations.

POV-Ray does not have any useful sort of user interface; you’re usually creating your models with computer code. It can therefore be challenging to use, and, as with any 3d programming language, a bit of geometry, trigonometry and algebra are needed.

However, the final results can be impressive. I’m continually amazed each year by the quality of the work added to their Hall of Fame.

For much easier, quicker and not so sophisticated 3d results, I use VPython, which is also a great way to learn programming that outputs 3d images.

Genetic testing: What it can do, and where we are.

“On average we found that each of us carries two or three mutations that could cause one of these severe childhood diseases.”
–Stephen Kingsmore, physician, Children’s Mercy Hospital in Greenfieldboyce (2010), New Genetic Test Screens Would-Be Parents.

NPR’s All Things Considered had two related articles on last night that deal with the specific topics we’re covering this week: genetic disease and recessive alleles.

The first one is about the latest in genetic screening technology, for determining if potential parents have recessive alleles that could combine to produce children with genetic diseases. Recent research has made this much easier.

The second touches on the ethical consequences of genetic screening. It could lead to an increase in abortion rates and leads us along the slippery slope of eugenics.

Beggars in Spain, by Nancy Kress
What if we engineered for intelligence?

This second story would make an interesting basis for a Socratic dialogue. As would, I think, the movie Gattica, which deals with the consequences of genetic screening and genetic customizations. I see it’s PG-13 so we may be able to screen it. Similarly, I may recommend Brian Stableford’s War Games to my eight graders who might like a military science fiction book that deals with genetic optimization. Alternatively, Nancy Kress’ Beggars in Spain might offer another interesting perspective on this issue.

Still life

Image by Gilles Tran.

What makes art? Frank Wilson points out that:

art … never simply transcribes what is “out there,” but selects certain details and arranges them into a harmony that transfigures them.
— Frank Wilson (2010) in “Still life and the alchemy of art“.

We might see arrangements like the stuff sitting on the counter every day, but the image/photography/painting becomes art when the collection is view from a specific perspective that transforms them and highlights details.

Aside from its obvious beauty, what really intrigues me about this picture is where it was taken: In the living room of the Menchers’ apartment, just a few feet from where I was standing. I would never have guessed.

When Eric told me that, I turned and looked, and could see where the vase and the other objects had been placed. But the setting was altogether different from the picture. The living room is a perfectly nice and neat space, and I had just been sitting there, but when I looked at it again there was absolutely nothing about it that would have brought to mind that photo.

Such is the alchemy of art.
— Frank Wilson (2010) in “Still life and the alchemy of art“.

Note: The image at the top of this post is computer generated Gilles Tran, using the free, open-source, 3D rendering program POV-Ray. I’ve played around with POV-Ray and it can be a bit tricky, but you can do interesting things.

Nuclear Fallout: Chernobyl pictures

Just in time for us to start reading The Chrysalids, David Schindler has a frightening gallery from the abandoned surroundings of Chernobyl, twenty-five years after the accident with the nuclear reactor.

The YouTube video below shows the same images as the gallery.

Dinner and a Show

At the end of each year, the Middle School puts on Dinner and a Show. As has become traditional, the students performed a play for the Show, and, for dinner, this year they did a Mediterranean themed meal: lasagna, baklava and some sort of cherry drink. The overwhelming feedback from the not necessarily impartial audience, of family members and faculty, seems to be that food and performance were quite a success. And, I have to say, the same applies from my point of view as well. The students did a great job putting everything together and pulling off the performance.

We usually work on Dinner and a Show for the entire second cycle. The first five weeks revolve around choosing the play, learning lines, and planning the meal. Our director, for the second year running, Ms. Jessica Parker, did a wonderful job with the adaptation, staging and working with the kids.

I was extremely lucky this year that I had two students who were really interested in the project. One, an eight grader, had been planning on taking charge since last year. The other, a seventh grader, really wanted to do the food. What was really nice was that, most of the time, they were the ones pushing me to get stuff done.

I’d ask questions like, “Have you started on the playbill yet?”

“Yes,” they’d reply, with exaggerated patience, “We’re still waiting for you to help with the images.”

The sixth week of the cycle, our immersion week, was dedicated entirely to the event; lots of practicing and food preparation. That’s when the students really shone. We had some help making the baklava (thanks Dr. Jen), but the next day, which was spent assembling two (and eventually three) types of lasagna, I only had a couple queries about what to use to boil water for the pasta (an electrical skillet works fairly well).

Everyone had a part in the play, but were also involved in setting things up. Apart from the cooks, there were separate crews for lighting and the backdrops. Once the crews got going, I spent most of my time staying out of the way. While I’d so like to jump in and help with everything, this is the way I think the middle school should work. I count this week as a really good one.