ISSN:0031-9228    

DOI:10.1063/1.2405519

出版商:AIP    

年代:1900

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1341899

出版商:AIP    

年代:1900

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1341904

出版商:AIP    

年代:1900

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1341906

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

The Royal Swedish Academy of Sciences has awarded the 2000 Nobel Prize in Physics to Zhores Alferov, director of the Ioffe Physico‐Technical Institute in Saint Petersburg, Russia; Herbert Kroemer of the University of California, Santa Barbara; and Jack Kilby, now retired from Texas Instruments Inc (TI) in Dallas, Texas, “for basic work on information and communication technology.” Alferov and Kroemer will share half of the SKr 9 million (about $900 000) prize “for developing semiconductor heterostructures used in high‐speed and opto‐electronics.” Kilby is to receive the other half “for his part in the invention of the integrated circuit.”

ISSN:0031-9228    

DOI:10.1063/1.1341908

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

As we were going to press, the CERN directorate announced that the 2 November shutdown of LEP was indeed thee+e−collider's final termination. The 27‐km LEP tunnel will now be made ready for the Large Hadron Collider, which should be providing 14‐TeV proton‐proton collisions by 2005. LEP had already enjoyed a one‐month reprieve in response to recent tantalizing hints of a possible Higgs boson with a mass of about115 GeV/c2.But, after heated discussion, it was finally decided that the extra October run did not uncover sufficient confirmatory evidence to justify a costly further extension of LEP's 11‐year life.

ISSN:0031-9228    

DOI:10.1063/1.2405520

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

In 1976, a serendipitous chain of events brought together three individuals from different academic and geographical cultures to study a curious polymer: polyacetylene. The trio soon discovered that doping this polymer can change its behavior from insulating to metallic. For that work, the three—Alan Heeger, a physicist now at the University of California, Santa Barbara; Alan MacDiarmid, a chemist from the University of Pennsylvania then specializing in inorganic chemistry; and Hideki Shirakawa, a polymer chemist who has recently retired from Japan's Tsukuba University—have now earned the 2000 Nobel Prize in Chemistry “for the discovery and development of conductive polymers.”

ISSN:0031-9228    

DOI:10.1063/1.1341909

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

The flapping motion of insect wings is qualitatively different from fixed airplane wings or even the rotation of helicopter blades. It's perhaps not surprising, then, that the quasi‐steady‐state analysis that works so well for aircraft predict for insects an amount of lift that's insufficient to keep them in the air.

ISSN:0031-9228    

DOI:10.1063/1.1341910

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

Fundamental decisions affecting US national policy—be they about health, economics, or national security—are made by duly elected national leaders and are based predominantly, but not exclusively, on their political judgment. These leaders must also have access to solid scientific and technical information to help infrom their decisions. Gaining an understanding of physical and technical realities is crucial to distinguish goals that may be achieved from goals that are wishful thinking.

ISSN:0031-9228    

DOI:10.1063/1.1341911

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

In recent years, physics and other sciences have contributed extensively to an emerging national‐security goal that “for every desired battlefield outcome there should be a precise and well‐defined action.”

ISSN:0031-9228    

DOI:10.1063/1.1341912

出版商:AIP    

年代:1900

数据来源: AIP