Fusion energy is created by fusing two atomic nuclei, in the process converting mass to energy, which appears as heat. The heat, as in conventional nuclear fission reactors, turns water into steam, which drives turbines to generate electricity, or is used to produce fuels for transportation or other uses.The editorial goes on to say that other developed nations are moving toward further research while we twiddle our thumbs. I know, this is still rather unlikely, and the writer is engaged in said research, but it seems like setting aside the same amount of money over 20 years that we spend every three months blowing up Iraq and Afghanistan would be a worthwhile investment. I would even venture to say that spending, say, 4 times that amount would likely be a good investment. But Republicans don't seem to like basic science, they like corporate welfare and tax cuts for the super wealthy.
Fusion energy generates zero greenhouse gases. It offers no chance of a catastrophic accident. It can be available to all nations, relying only on the Earth’s oceans. When commercialized, it will transform the world’s energy supply.
There’s a catch. The development of fusion energy is one of the most difficult science and engineering challenges ever undertaken. Among other challenges, it requires production and confinement of a hot gas — a plasma — with a temperature around 100 million degrees Celsius.
But potential solutions to these daunting technical challenges are emerging. In one approach, known as magnetic fusion, hot plasma is confined by powerful magnets. A second approach uses large, intense lasers to bombard a frozen pellet of fusion fuel (deuterium and tritium nuclei) to heat the pellet and cause fusion to occur in a billionth of a second. Whereas magnetic fusion holds a hot plasma indefinitely, like a sun, the second approach resembles an internal combustion engine, with multiple mini-explosions (about five per second).
Once a poorly understood area of research, plasma physics has become highly developed. Scientists not only produce 100 million-degree plasmas routinely, but they control and manipulate such “small suns” with remarkable finesse. Since 1970 the power produced by magnetic fusion in the lab has grown from one-tenth of a watt, produced for a fraction of a second, to 16 million watts produced for one second — a billionfold increase in fusion energy.
Monday, July 11, 2011
While Republicans Look To Cut Basic Science Research....
....and Obama goes along with them, there's this (Via Mark Thoma):
Labels:
Global warming,
Science and stuff
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment