scientific american - 1996 04 - smart rooms

... 24 JOHN BIGELOW TAYLOR Art Resource 26 Scientific American April 1996 SA Copyright 1996 Scientific American, Inc. News and Analysis28 Scientific American April 1996 FIELD NOTES Interview with a Parrot F or ... design plan, software de- News and Analysis Scientific American April 1996 35 Copyright 1996 Scientific American, Inc. APRIL 1996 $4.95 NANOTECHNOLOGY • F...

Ngày tải lên: 12/05/2014, 15:07

... (212) 35 5-0 408. Index of articles since 1948 available in electronic format. Write SciDex™, SCI- ENTIFIC AMERICAN, 415 Madison Ave- nue, New York, N.Y. 1001 7-1 111, or fax (212) 35 5-0 408. Photocopying ... as patchy as the calico cat herself. ÑJohn Rennie 30 SCIENTIFIC AMERICAN April 1993 Copyright 1993 Scientific American, Inc. 32 SCIENTIFIC AMERICAN April 1993 I f atom...

Ngày tải lên: 12/05/2014, 14:49

... charge-density wave or a spin-antiparallel (or “singlet”) superconducting state results. CHARGE-DENSITY WAVE SPIN-DENSITY WAVE SPIN-UP ELECTRON HOLE SPIN-DOWN ELECTRON Copyright 1994 Scientific American, ... in re- SCIENTIFIC AMERICAN April 1994 53 CHARGE AND SPIN DENSITIES of electrons are shown in nor- mal metals, charge-density waves and spin-density waves. The spin-up (orange ) and...

Ngày tải lên: 12/05/2014, 14:54

... ÑSasha Nemecek 26 SCIENTIFIC AMERICAN April 1995 U ntil recently, many medical in- vestigators believed the AIDS vi- rus remains more or less dor- mant in asymptomatic persons, step- ping up its ... But from the moment I walk into the direc- torÕs modest oÛce, it is appar- ent that its newest inhabitant, Arati Prabhakar (pronounced AR-ah-thee Pra-BOCK-er), does not Þt the archetype for th...

Ngày tải lên: 12/05/2014, 15:00

... two weeks ago, we know.Ó ÑCorey S. Powell SCIENTIFIC AMERICAN January 1996 23 Copyright 1995 Scientific American, Inc. 24 SCIENTIFIC AMERICAN January 1996 C hecking water quality was once a simple ... OGDEN Copyright 1995 Scientific American, Inc. SCIENTIFIC AMERICAN January 1996 31 easily destroyed. Moreover, some theo- rists raised certain technical objec- tions, nam...

Ngày tải lên: 12/05/2014, 15:04

... while there ex- ists an acute need for health care by so many Americans, remains diÛcult to swallow. ÑDavid Schneider SCIENTIFIC AMERICAN February 1996 21 Copyright 1996 Scientific American, Inc. S chizophrenia ... 35 5-0 408. Index of articles since 1948 available in electronic format. Write SciDex  , Scien- tiÞc American, 415 Madison Avenue, New York, NY 1001 7-1 111, fax (...

Ngày tải lên: 12/05/2014, 15:04

... INSTITUTE Copyright 1996 Scientific American, Inc. 36 SCIENTIFIC AMERICAN March 1996 A new cryptanalytic attack has shaken conÞdence in the securi- ty of some very popular encryp- tion schemesÑand ... 18 SCIENTIFIC AMERICAN March 1996 tion under way in the rem- nant of supernova 1006, this process probably oc- curs in other young super- nova remnants,Ó notes Rob- ert Petre o...

Ngày tải lên: 12/05/2014, 15:06

... Copyright 1996 Scientific American, Inc. News and Analysis22 Scientific American May 1996 A Peek at Pluto The Hubble Space Telescope has cap- tured pictures of Pluto’s frosty sur- face—66 years ... solution,” Strassmann testified in a Senate hear- ing, “has resulted in thousands of unin- tegrated, hard-to-maintain, impossible- to-manage, contractor-dependent is- lands of automati...

Ngày tải lên: 12/05/2014, 15:08

... objective: or- ange-throated males beat out blue- throats, blue-throats overpower yel- low-striped throats and yellow-striped throats checkmate orange-throats. These relations have generated a six- year ... even moves NEUROSCIENCE Copyright 1996 Scientific American, Inc. News and Analysis Scientific American June 1996 35 sciences Institute, sits in front of a floor- to-ceiling rack...

Ngày tải lên: 12/05/2014, 15:08

... 77 7-0 444. Scientific American- branded products avail- able. For free catalogue, write Scientific American Selections, P.O. Box 11314, Des Moines, IA 5034 0-1 314, or call (800) 77 7- 044 4. E-mail: info@sciam.com Photocopying ... than the CD-R and CD-E (erasable) formats. Until now, optical recording systems have relied predominantly on magneto-optical tech- Next-Generation Compac...

Ngày tải lên: 12/05/2014, 15:10