ISSN:0031-9228    

DOI:10.1063/1.2387062

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2387063

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2387066

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2387070

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2387075

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

About once a century, in our galaxy as in others, a white dwarf accretes enough matter to trigger the fusion of carbon somewhere in its core. A deflagration wave spreads through the stellar interior and releases so much nuclear energy in its wake that the entire star vaporizes. The ferocious explosion is a type Ia supernova.

ISSN:0031-9228    

DOI:10.1063/1.2387077

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

Even the most tin‐earedof listeners would hardly confuse a Johann Sebastian Bach piano prelude with a Keith Jarrett jazz improvisation. But despite the 300 years of stylistic evolutions that separate the two masters, they and other great composers share an important musical trait: They move from chord to chord in what feels like a smooth‐sounding, economical way.

ISSN:0031-9228    

DOI:10.1063/1.2387078

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

The reduction of pressurein the mantle is a central reason behind Earth's volcanism. Mantle rock that rises adiabatically to a low enough pressure melts without any added heat source. The ascent may be actively driven by convection, as in mantle plumes, where hot, buoyant jets from the deep interior are thought to provide a rich source of material to fuel the volcanism. Or it may be passive, as at mid‐ocean ridges, where magma forms from the upwelling of rock into the gaps left by the spreading of tectonic plates. Deglaciation can also trigger volcanic pulses, as it did in Iceland at the end of the last ice age when the elastic plate rebounded from the melting of the ice cap. Meteorite impacts that excavate large craters at Earth's surface are yet another cause of pressure release.

ISSN:0031-9228    

DOI:10.1063/1.2387079

出版商:AIP    

年代:1906

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2387080

出版商:AIP    

年代:1906

数据来源: AIP

摘要:

Sherwood Boehlertisn't subtle about his interests. Step into his office in the Rayburn House Office Building on Capitol Hill, and you see two white cabinet doors covered with signatures—one from astronauts who have flown in space and the other from major‐league baseball players who have made it into the Hall of Fame.

ISSN:0031-9228    

DOI:10.1063/1.2387081

出版商:AIP    

年代:1906

数据来源: AIP