What's New Robert L. Park 24 Sep 2010
Robert Park <[email protected]> Sat, 25 Sep 2010 04:03:21 -0400
| Newsgroups | gmane.science.physics.whatsnew |
|---|---|
| Message-ID | <LISTSERV%[email protected]> |
WHAT=92S NEW Robert L. Park Friday, 24 Sep 2010 Washington, DC 1. DYSPROSIUM WAR: CHINA HALTS RARE EARTH EXPORTS TO JAPAN. Japan today announced that it is releasing the captain of a Chinese fishi= ng=20 boat arrested two weeks ago in disputed territorial waters of two=20 uninhabited islets you've never heard of in the East China Sea. China=20 quickly declared economic war, suspending shipment to Japan of dysprosium= ,=20 a rare earth metal of which you=92ve also never heard. Dysprosium is hig= hly=20 valued for its magnetic coercivity, a property of which you=92ve also=20 probably not heard. Dysprosium is important in the production of hybrid=20 cars, such as the Toyota Prius. So why do rare earths have to come from=20 China? They don't; rare earths (the lanthanide series plus scandium and=20 yttrium) are actually fairly abundant in the Earth's crust, but 20 years=20 ago China began marketing rare earths at well below production cost,=20 forcing mines outside China to shut down, creating a monopoly. For other= =20 nations, including Japan, to resume mining would involve consierable=20 delay. The word "dysprosium" is derived from Greek meaning, "difficult t= o=20 get at."=20 2. DEAR MR. PRESIDENT: I AM WRITING TO VOLUNTEER MY SERVICES.=20 Boeing announced that it=92s going into the space-tourism business with S= pace=20 Adventures to take astronauts, who seem to have little else to do, to the= =20 ISS along with tourists who have way too much disposable income. The stor= y=20 in the NYT last week said this would "bolster the Obama vision for NASA."= =20 That part of the story must be wrong Mr. President, your vision is grande= r=20 than that. Since the space race is long over, you may be worrying about=20 what to do with the astronaut corps, as well as that goofy pile of hardwa= re=20 we put in low-Earth orbit for reasons now forgotten. To help, I skipped=20 lunch today to make you a things-to-do list: 1) send DSCOVER to the L1=20 point, it's way past time; 2) drop the ISS in the Philippine trench befor= e=20 someone else gets hurt; 3) commit a number of large telescopes to=20 identifying potentially Earth-crossing objects and to refining their=20 trajectories; 4) forbid astronauts to go near Mars, although a robotic=20 sample-return mission would be nice; 5) install a sonar on Europa to look= =20 beneath its frozen ocean; 6) start putting together a giant segmented=20 telescope at the L2 point to study extrasolar planets; additional segment= s=20 can be added by future generations. Let me know when you've finished the= =20 list and I'll skip another lunch. 3. MEMO TO SCRUTON: AT LEAST HAWKING GOT THE RIGHT ANSWER. =20 An op-ed by Roger Scruton in The Wall Street Journal this morning was=20 titled, "Memo to Hawking: There=92s Still Room for God." An English=20 philosopher, Scruton is a visiting scholar at the ultraconservative=20 American Enterprise Institute in Washington, DC. "Almost no one," he=20 writes, "believes there is a rational scientific theory that tells us how= =20 the universe emerged from nothingness." No one, that is, except those th= at=20 might be expected to know, physicists, who labor to make such a theory=20 possible. In addition to Kant, Scruton invokes Newton and Einstein to ma= ke=20 his point, but unlike philosophy, physics is tightly bound to observation= . =20 THE UNIVERSITY OF MARYLAND. Opinions are the author's and not necessarily shared by the University of Maryland, but they should be. --- Archives of What's New can be found at http://www.bobpark.org What's New is moving to a different listserver and our subscription process has changed. To change your subscription status please visit this link: http://listserv.umd.edu/cgi-bin/wa?SUBED1=3Dbobparks-whatsnew&A=3D1