scientific american special edition - 1999 vol 10 no1 - the future of space exploration
scientific american special edition - 1999 vol 10 no1 - the future of space exploration
... study)(NASA) The Future of Space Exploration 19Key Space Explorations of the Next DecadeCopyright 1999 Scientific American, Inc.Spaceflight Today20 Scientific American Presents The International Space ... XueInstitute of Scientific and Technical Information of ChinaP.O. Box 2104 Chongqing, Sichuan PEOPLE’S REPUBLIC OF CHINAtel: +8 6-2 3 6-3 863170OTHER EDITIONS OF SCIENTIFIC AMERICAN The Future of Space ... The Future of Space Exploration 9Near Earth Asteroid Rendezvous (NEAR) is the first of NASA’sDiscovery series of spacecraft. Built inexpensively from off- the- shelf hardware, the probe...
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scientific american special edition - 2003 vol 13 no1 - the edge of physics
... the collision of twothree-branes.Thus, branes are no longer the uglyducklings of string theory. They have tak-en center stage as the microscopic con-stituents of M-theory, as the higher-di-mensional ... anytrouble recognizing the truth of the fun-damental unified theory. The test will bewhether the theory successfully accountsfor the measured values of the physicalconstants of the Standard Model, ... into the fabric of spacetime.www.sciam.com THE EDGE OF PHYSICS15COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC.drew together all the work on T-duality,S-duality and string-string duality underthe...
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scientific american special edition - 1999 vol 10 no2 - men
... after the insult.As the subject was walking down the narrow hallway, a six-foot, three-inch,250-pound accomplice of the experi-menter walked toward him down the middle of the corridor. Southernerswho ... MANAGER41 5-4 0 3-9 030 fax 41 5-4 0 3-9 033dsilver@sciam.comDALLAS THE GRIFFITH GROUP97 2-9 3 1-9 001 fax 97 2-9 3 1-9 074lowcpm@onramp.netCANADAFENN COMPANY, INC.90 5-8 3 3-6 200 fax 90 5-8 3 3-2 116dfenn@canadads.comEUROPERoy ... DESIGN MANAGER21 2-4 5 1-8 532nmongelli@sciam.comNEW YORK ADVERTISING OFFICES415MADISON AVENUE, NEW YORK, NY 100 1721 2-7 5 4-0 550 fax 21 2-7 5 4-1 138OTHER EDITIONS OF SCIENTIFIC AMERICAN Spektrum...
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scientific american special edition - 1999 vol 10 no3 - your bionic future
... make true “off -the- shelf” organs a reality.12 SCIENTIFIC AMERICAN PRESENTSCopyright 1999 Scientific American, Inc.YOUR NEW BODYYOUR BIONIC FUTURE 13tains a space for the formation of the tissue ... of the tale will include the transplantation of the humanbrain with all its complexity preserved. But the brain can’t func-tion properly without the plumbing of the body and the wiring of the ... represent-ed. Some normally derive from the outermost layer (the ecto-derm), others from the innermost or middle layers (the endo-derm or mesoderm). This variety offered further evidence of the cells’...
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scientific american special edition - 1999 vol 10 no4 - extreme engineering
... Once the STM probe comes close enough to one of the surface atoms—around a nano-meter (one billionth of a meter) away— the electron cloud of the atom on the end of the probe and that of the surface ... atoms in a circle on top of a copper sur-face. The ripples inside the ring are the result of the wavelike behavior of electrons in the system.24Copyright 1999 Scientific American, Inc.Requiredby ... rainsarrived in the summer of 1998. The re-sulting floodwaters caused severe dam-age along the middle and lower reaches of the river, but at the construction site the cofferdams easily handled the peakflow...
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scientific american special edition - 2002 vol 12 no1 - the hidden mind
... wouldbe the derivation of the three-dimensional representation of the world from the two-dimensional signals falling onto the retinas of our two eyes or even onto one of them.Visual theorists ... contours. Anotherand perhaps more striking case is the fill-ing in of the blind spot. The blind spot ineach eye is caused by the lack of photore-ceptors in the area of the retina where the optic ... completely anes-thetized. Clearly, an animal (or a human)is not conscious of all neural activity. The observation raises the question of whether awareness is the result of the ac-tivation of special...
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scientific american special edition - 1998 vol 09 no1 - magnificent cosmos
... including the pres-ence or absence of nearby radiation-emitting stars.On the other hand, astronomer David F. Gray of the Univer-sity of Western Ontario in Canada has challenged the existence of the ... geologic features of plan-ets around other stars would require an array of space tele-scopes the size of the U.S. But pictures of Earth do not reveal the presence of life unless they are taken ... colleague Jean-Marie Mariotti of the Paris Ob-servatory, as well as some 20 other scientists and engineers. The two of us at the University of Arizona studied the poten-tial of a new approach,...
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scientific american special edition - 2000 vol 11 no1 - weather
... from the weather service’s.“More cloudiness, high of 74,” saysAbrams in a voice-mail message. “It willbe 60 to 70 percent cloudy. A one- ortwo-out -of -1 0 chance for showers. A one-out -of -1 00 ... ground-based gauges and otherTOP -OF -THE- LINE EQUIPMENT: The Doppler radar tower (above) near Washington Dulles Air-port is one of the workhorses intended to increase the accuracy and timeliness of ... AWIPS. Often called the cen-tral nervous system of the weather serv-ice, this system connects all the of cesaround the country, allowing meteorolo-gists to display model maps and weatherobservations,...
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scientific american special edition - 1998 vol 09 no3 - the oceans
... nitrogen narcosisin the dark underneath the stern of the wreck of the fa-mous Japanese battleship Naga-to. The 216-meter-long flag-ship of the Imperial Navy dur-ing World War II rests upsidedown ... on the islands, up to 90 percent of their radi-ation exposure would come from the ce-sium in the local produce. Almost all the rest of their dosage would come from the cesium in the soil. On the ... would learnfor whom these bells tolled and why. In the middle of the night, a dead-ly combination of winds and tides had raised the level of the North Seato the brim of the Netherlands’s protective...
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scientific american special edition - 2000 vol 11 no2 - the quest to beat aging
... promised future bene-fits once the huge baby-boomer genera-tion retires. The basic cause of the shortfall resides in the awesome, glacialpressures of demographics. The pay-as-you-go concept ... called the U.S. Bur-den of Disease and Injury, by the Harvard School of Pub-lic Health, found a staggering 40-year gap between the longest-lived Americans—Asian -American women—and the shortest, ... Books, 1999. AND THE WINNER IS 114-year-old Eva Morris of Eng-land, who is currently the oldest person alive, accord-ing to the Guinness Book of Records. THE SENTINELCopyright 2000 Scientific American, ...
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