... forming a radial wave packet, we
created a state that exhibits strong
classical characteristics. Our goal,
however, was to form a classical atom.
In that regard, the radial wave packet
has a shortcoming. ... ßourished, Pampa de las Lla-
mas-Moxeke, located along the south-
ern branch of the Casma, was a bustling
66 SCIENTIFIC AMERICAN
June 1994
Early Andean Cities
Some 3,800 years ago Pampa de las Llamas-Moxeke ... York Advertising Man-
ager ; William Buchanan, Manager, Corporate
Advertising ; Randy James, Elizabeth Ryan. CHI-
CAGO: 333 N. Michigan Ave., Chicago, IL 60601;
Patrick Bachler, Advertising Manager....
... the EPAÕs Of-
fice of Radiation and Indoor Air, notes
that over a dozen more radon studies
are under way, and the EPA has asked
the National Academy of Sciences to do
a meta-analysis of available ... treatment, a physician will have
behaved honorably. As recently stated
in a national meeting on prostate can-
cer, the 70-year-old man dying of meta-
static disease was probably at age 50 a
man ... white dwarf stars and one
a star with an active corona
The fourth
was a cataclysmic variable star, a binary
system that occasionally brightens by a
factor of Þve to 100, named SS Cygni.
Because...
... on.
SCIENTIFIC AMERICAN August 1995 45
PHILIP MORRISON at Los Alamos Labo-
ratory in 1945.
LOS ALAMOS NATIONAL LABORATORY (INSET)UPI/BETTMANN
ATOMIC SCIENTISTS gather at a base
in the Marianas ... that rose and rotated in an updraft. The storm was a highly
organized Òsupercell,Ó an ideal tornado breeding ground. As William Gargan, a
graduate student at the University of Oklahoma, and I approached ... within larger masses of
rotating air known as mesocyclones. In
1953 a mesocyclone appeared on a ra-
dar screen at Urbana, Ill., as a hook-
shaped appendage on the southwest
side of a stormÕs radar...
... such
NOT IN MY
BACKYARD
Could ocean mud trap nuclear
waste from old Russian subs?
NUCLEAR WASTE
ABC AJANSI Gamma Liaison
JERRY ALEXANDER Tony Stone Images
Copyright 1997 Scientific American, Inc.
technology, ... libraries will be digital. Yet it will
probably take another decade beyond
that before half the libraries’ materials
will be available in digital formats.
Hazards in the Road Ahead
T
his transition ... markets not only for drugs that
might boost a failing memory but also
for pharmaceuticals that, administered
after a traumatic event, might prevent
News and Analysis32 ScientificAmerican March...
... University
Copyright 1998 Scientific American, Inc.
The Caiman Trade 70 ScientificAmerican March 1998
The Caiman Trade
by Peter Brazaitis, Myrna E. Watanabe
and George Amato
A
small, sleek handbag is prominently ... species are separated by scattered uplands and the
Brazilian shield from the Yacaré caiman, Caiman yacare. The
fourth member of the group, the broad-snouted caiman, or
Caiman latirostris, roams river ... environmental factors
such as ultraviolet light and moisture
can change the materials’ properties.
And as is the case for any material, an
excessive load can cause failure and
damage. “But how...
... have ground his works to powder just the same.
Three and a half million years ago a trio of furry bipeds walked across
an African savanna caked with damp volcanic ash. Maybe it was a happy
family ... MANUFACTURING MANAGER
Tanya Goetz, DIGITAL IMAGING MANAGER
Silvia Di Placido, PREPRESS AND QUALITY MANAGER
Madelyn Keyes, CUSTOM PUBLISHING MANAGER
Norma Jones, ASSISTANT PROJECT MANAGER
Carl ... TRUST
HADAR
OMO
OLDUVAI
GORGE
LAETOLI
LAKE
TURKANA
ETHIOPIA
EASTERN
RIFT VALLEY
KENYA
TANZANIA
N
LAETOLI AREA in northern Tanzania
lies in the eastern branch of the Great
Rift Valley, where many hominid...
... have
moderate or high levels.
—Rodger Doyle (rdoyle2@aol.com)
HONG KONG
SINGAPORE
ISRAEL
KUWAIT
QATAR
UNITED ARAB
EMIRATES
CUBA
HAITI
GUATEMALA
HONDURAS
EL SALVADOR
NICARAGUA
COSTA RICA
PANAMA
TURMOIL ... cichlids occurs
in Africa, in particular the
great East African lakes
of Victoria, Malawi and
Tanganyika.
Geologic data indicate
that Lake Victoria, shaped like a saucer the size
of Ireland, formed ... investigate models
providing more accurate estimates of risk.
Multifractals and the Market
A
n extensive mathematical basis already exists for fractals
and multifractals. Fractal patterns appear not...
... Vietnamese
(at50% for American and 5045% for Vietnamese).).
39
facial features and other subjects adorning ourselves can be seen as aspects of
physical appearance that produce potential messages.
...
“paralanguage”. Characteristics of the voice anddand its use, including the accent
with which we speackspeak a language, have a major impact on how verbal
messages are received. Some researchers ... gesturale language of the deaf, and thus “do not represent a
language in any normal sense of that term” (Richmond et al. 1991).
Vocal behavior: Vocal behavior has been variously known as “vocalics”...
... unchanging. Write
'constantly changing' only if you mean exactly that. Only write 'invariably' if you really
mean always; even better, write 'always'.'Varying', ... in a dictionary. Preliminary results and unpublished
findings are not yet data. Data is plural, as are media, agenda and phenomena.
'Parameter' is sometimes used wrongly. Variable ... Write
'vitamin-deficient and little-used diet' but &apos ;a rarely eaten food'; also 'X-ray-induced and
chemically induced mutations'. A hyphen can change a meaning: a large...