Science


Pebbles to Hydrogen

China’s growth demands a lot of energy and they are aggressively pursuing nuclear options. On the one hand traditional reactors such as have not been built in the US since 1979 and which make many nervous. On the other hand they are working on pebble-bed reactors:

A reactor small enough to be assembled from mass-produced parts and cheap enough for customers without billion-dollar bank accounts. A reactor whose safety is a matter of physics, not operator skill or reinforced concrete. And, for a bona fide fairy-tale ending, the pot of gold at the end of the rainbow is labeled hydrogen.
Small currently is in the 200 Megawatt range and cheap means approximately $300 million. These small reactors can be combined in a modular fashion using common monitoring and control systems. This seems promising simply from the perspective of power generation but there is more.
Apparently this reactor techcnology has promise for hydrogen production:
To power a billion cars, there’s no practical alternative to hydrogen. But it will take huge quantities of energy to extract hydrogen from water and hydrocarbons, and the best ways scientists have found to do that require high temperatures, up to 1,000 degrees Celsius. In other words, there’s another way of looking at INET’s high-temperature reactor and its potential offspring: They’re hydrogen machines.
…Researchers at Sandia National Laboratories believe efficiency could top 60 percent – twice that of low-temperature methods. INET plans to begin researching hydrogen production by 2006.
In that way, China’s nuclear renaissance could feed the hydrogen revolution, enabling the country to leapfrog the fossil-fueled West into a new age of clean energy. Why worry about foreign fuel supplies when you can have safe nukes rolling off your own assembly lines? Why invoke costly international antipollution protocols when you can have motor vehicles that spout only water vapor from their tail pipes? Why debate least-bad alternatives when you have the political and economic muscle to engineer the dream?
Now this looks like a line of research I’d be putting a lot of money into if I were promising the citizens of my country a reduced reliance on foreign oil.
Update (9/9): An alert reader notes in the comments that the DOE has identified a similar reactor type as part of its technology evaluation roadmap. It is not, though, clear from the referenced document what level of funding the US has provided for this effort.


Home Learning ’60s-80s

Many of you probably learned a bit from the How and Why Wonder Book series:

These were produced in the US during the 1960’s and covered many subjects in science, technology, nature and history. They were large format books of 270x205mm, mostly softcover, but hardcover was also available. They are always 48 pages long, and mostly illustrated with simple painted artwork, though some photographs are used. The books are structured into chapters based on sub-topics of the title subject, and within these are questions that a child might ask, followed by a half page answer to the question.
Rob Storey has collected most of the covers.
Via Reflections in d minor.


You Have Kept Those Papers, Haven’t You?

Huh, what papers? Your archives, of course.
For some of you these may now be all electronic but for those just a bit older most will still be paper based: copies of letters written and received, journals, photos, school papers, etc.
This geologist who recently Looked back at buried treasure reminded of this and the fact that I am tempted daily by the boxes of papers and other archival materials scattered about the house:

The hidden gems of my portfolio were definitely the reflections. Reading these gave me a chuckle. It was nice to see that as I progressed through high school, the writing quality (and the handwriting) improved dramatically.
and
Everyone remembers disecting in high school, whether you enjoyed it or not. I definitely enjoyed it. The lab was fairly standard. It had diagrams with organs that the student had to identify, along with basic questions that involved looking inside the rat. In fact, when I sniffed the paper, I can still smell traces of the formaldehyde where the rats were stored at. Ah, the memories!
Yes, the memories and the history. Save your archives. If not for you then for that child, grandchild, nephew, or ?, who will be absolutely fascinated by the treasure.
Via Tangled Bank #8 and Pharyngula.


Cool Space

The California Institute of Technology provides a site that has some great tutorial material on infrared and multi-wavelength astronomy. Also, the many images and videos will make multiple visits worth your time even after you have learned all the basics!
The material also covers applications to biology, geology, oceanography and more.
Interestingly, the site warns readers when material is written for those older then 14 and refers the reader to their parents or guardians if the text is too difficult. I wonder just who the average adult is supposed to get help from.
Via The Internet Scout Report.


bush Science

It will be interesting, perhaps depressing, to see which US scientists are selected to advise the World Health Organization. Previously WHO had selected appropriate scientists for their needs. Now the administration will pick them based, I guess, on the administration’s needs:

Instead, Steiger’s Office of Global Health Affairs now will choose “an appropriate expert who can best serve both of our organizations,” he said. HHS experts made available also must advocate U.S. government policies, Steiger said.
Yep, I like that last key criteria. Apparently good science is not the main goal.
Via David Harris.