ISSN:0031-9228    

DOI:10.1063/1.2409983

出版商:AIP    

年代:1903

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1603051

出版商:AIP    

年代:1903

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1603052

出版商:AIP    

年代:1903

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1603062

出版商:AIP    

年代:1903

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.1603064

出版商:AIP    

年代:1903

数据来源: AIP

摘要:

A group at Sandia National Laboratories in Albuquerque, New Mexico, has announced the first yield of thermonuclear neutrons from an inertial‐confinement fusion scheme that does not involve lasers. At the April meeting of the American Physical Society in Philadelphia, Ramon Leeper reported that he and his colleagues had performed an experiment at Sandia's pulsed‐power “Z Machine” (see PHYSICSTODAY, June 1998, page 56) that produced some3×1010thermonuclear neutrons in the implosion of a small, spherical capsule of deuterium gas.

ISSN:0031-9228    

DOI:10.1063/1.1603065

出版商:AIP    

年代:1903

数据来源: AIP

摘要:

Measuring small magnetic fields plays an important role in many areas of physics. Mapping small variations in Earth's magnetic field, tracing the history of geodynamo reversals as recorded in ancient rocks, characterizing new superconductors and other materials, searching for deviations from the standard model of particle physics, mapping the fields and currents of heart or brain activity—all require precise measurements of magnetic fields that are orders of magnitude smaller than Earth's.

ISSN:0031-9228    

DOI:10.1063/1.1603066

出版商:AIP    

年代:1903

数据来源: AIP

摘要:

A metal's density barely falls on melting. One might guess, therefore, that metal atoms in the liquid phase pack together with almost the same efficiency and with almost the same order as in the solid phase. And—to continue this line of speculation—if one tried to cool a liquid metal below its equilibrium melting point, the few disorderly atoms would easily fall into line with the ordered majority and the liquid would promptly solidify.

ISSN:0031-9228    

DOI:10.1063/1.1603067

出版商:AIP    

年代:1903

数据来源: AIP

摘要:

“Sensitive skin” is the delicate name for a visionary technology: thin flexible large‐area sensor arrays. With sensitive skin, one could endow robots with the information‐gathering tools they need to work in unstructured environments; one could clothe heart patients with shirts that monitor arrhythmia; one could equip food handlers with gloves that detect spoiled meat. The applications of sensitive skin are many, varied, and—unfortunately—out of reach.

ISSN:0031-9228    

DOI:10.1063/1.1603068

出版商:AIP    

年代:1903

数据来源: AIP

摘要:

Rome, Zagreb, Kuala Lumpur, anyone? To make up for being short on science, the US State Department has begun sending government scientists to its embassies around the world.

ISSN:0031-9228    

DOI:10.1063/1.1603069

出版商:AIP    

年代:1903

数据来源: AIP