Rickover on duty

January 29, 2012

in Geek stuff,Politics

U.S. Admiral Hyman Rickover, father of the nuclear navy, wrote a good plain-language description of what is basically Immanuel Kan’t categorical imperative:

I believe it is the duty of each of us to act as if the fate of the world depended on him. Admittedly, one man by himself cannot do the job. However, one man can make a difference… We must live for the future of the human race, and not for our own comfort or success.

It’s an interesting perspective in the context of his own life. He dedicated much of it to building a nuclear-powered navy for the United States, despite his apparent view that such a navy was, at best, a necessary evil.

As a side note, many of today’s commercial nuclear power stations use reactor designs that have evolved from the shipborne reactors designed by Rickover and his staff.

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As usual, Bill McKibben is saying sensible things and calling for appropriate actions. He is a non-Canadian who is concerned about the ethics of digging up and burning the oil sands, in a world where the climate is changing at a frightening pace.

He is asking Canadians to sign a petition:

“As a Canadian, I stand with people all over the world who are opposed to burning the oil sands, and demand that our leaders stop their campaign to discredit the movement to stop the pipeline.”

Please consider signing. He is hoping to get 10,000 signatures before he visits Vancouver in March.

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Ossington

January 26, 2012

in Photo of the day

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One of the big reasons for opposing the Enbridge Northern Gateway pipeline is because of how 200 oil tankers a year would threaten the coast of British Columbia.

I think everyone who has seen that coastline understands its beauty and ecological importance. At the same time, I suspect the idea can be made more salient for people by showing them photos and video of the areas that could be affected if the pipeline goes through.

It’s not clear what the most effective approach would be for reminding people about what is at stake. Really there is a spectrum of possibility, ranging from fantastic shots taken by talented photographers on top-notch gear and shown in magazines and galleries to amateur shots taken by visitors and ordinary British Columbians and uploaded to Facebook or Flickr.

In all likelihood, many approaches will be tried simultaneously. For my own part, I have been thinking about a potential photo show that would incorporate photos of the B.C. coast as well as photos from the successful protests against the Keystone XL pipeline, which took place in Washington D.C.. Toronto may not be the most appropriate venue for that, since people here don’t have much of a personal emotional stake in the integrity of west coast ecosystems.

Perhaps I should try and find the time to set up yet another website, where people could contribute photos from B.C. and explain why they oppose the Northern Gateway pipeline…

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XKCD is right, this is worth a look today:

List of common misconceptions
From Wikipedia, the free encyclopedia

Note:

  • Nero didn’t fiddle while Rome burned.
  • The ancient Greeks knew that the Earth was spherical, and how large it was.
  • Napoleon was not short. He was slightly taller than the average Frenchman.
  • The Emancipation Proclamation didn’t free slaves in the northern states.
  • The Great Wall of China cannot be seen from space using the naked eye.
  • People did not evolve from chimpanzees.

Etc, etc, etc.

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Flowers on bricks

January 24, 2012

in Photo of the day

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On BuryCoal: should younger people be given more votes, because they will survive to experience more of the future?

As I have mentioned to a few people before, my ultimate dream of domesticity is a place where I can unpack all of my books, and perhaps where I have an espresso machine. That day, if it ever comes, is a long way off. All indications are that the next few years will continue to involve a fair bit of moving about.

Since I was an undergraduate, I have been making coffee using a French press. I have either purchased pre-ground beans, with the pieces at the appropriate size for this brewing method, or tried to approximate the proper grind using a cheap blade grinder. Neither of these approaches is ideal, since pre-ground coffee gets exposed too thoroughly to air and blade grinders produce bean fragments of very inconsistent sizes. Also, the French press itself has some limitations. It produces a relatively bitter and sediment-laden sort of coffee.

The AeroPress

Based on enthusiastic reviews online, I am trying the AeroPress coffee maker. It is sometimes described as a way of making espresso, but I don’t think that’s entirely justifiable. It doesn’t use steam or a great deal of pressure. What it does do is produce good coffee in small volumes. It’s a bit complicated and not especially quick, but the ritual of it is part of the appeal.

In order to work well, the AeroPress requires beans that have been consistently ground to the right size. To do that in an inexpensive and portable way, I bought a Hario Skerton hand-driven conical burr grinder (similar). You put a small handful of coffee beans in the top, turn the handle for a few minutes, and end up with enough ground coffee to operate the AeroPress. You could more easily produce bean fragments of the right sizes using an electric conical burr grinder, though they are more expensive and one purchased for use in one country may not necessarily work in another.

The AeroPress is basically a plastic syringe. When used in the most effective way (not the way in the instructions), you place it on a countertop with the plunger already inserted and the receptacle for the filter cap facing upward. You add ground coffee and boiling water, stir, and wait a few seconds. You then put the end cap on, with a paper filter in place. To get the coffee oil, you then want to carefully press the plunger in until the first small quantity of liquid comes through the filter. Then, invert the whole device above a mug and press out the remaining coffee. This requires some force, so either use a mug that has reasonable strength or be prepared for the possibility that it will break.

After completing this process, you end up with a small cup of coffee and a puck-shaped mass of depleted coffee grounds. The AeroPress is easy to clean. You just discard the filter and the ‘puck’ and rinse the rest of the device off.

I enjoy the coffee the AeroPress produces, though I am still experimenting with the precise ratio of coffee grounds to hot water. It is much denser and richer than ordinary French press coffee, though not quite as much so as real espresso. It isn’t bitter, and doesn’t contain any bean sludge. The whole process of making AeroPress coffee is better suited to a quiet Saturday morning than to a hurried weekday departure, especially if you use a hand-driven grinder.

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Gun control salmon

January 23, 2012

in Photo of the day

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