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Here, superimposed
on the iris is a magnified, false-color image of a retina that was
taken through the subject’s own eye with an adaptive optics camera.
The arrangement of blue, green, and red cone photoreceptors—each
of which is just 4–5 mm across—can be clearly seen. To learn more
about how adaptive optics technology is being applied to retinal
microscopy and human vision, read Don Miller’s article, which begins
on page 31. (Image courtesy of Austin Roorda and David Williams,
University of Rochester.)
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Motile
Behavior of Bacteria
E. coli, a self-replicating object only a thousandth of a millimeter
in size, can swim 35 diameters a second, taste simple chemicals
in its environment, and decide whether life is getting better
or worse
--Howard C. Berg
Retinal
Imaging and Vision at the Frontiers of Adaptive Optics
By compensating for the minor, as well as the major, defects in
the eye’s optics, we can look through the lens to observe retinal
features the size of single cells--Donald T. Miller
Physics
and the Information Revolution
Quantum physics holds the key to the further advance of computing
in the postsilicon era--Joel Birnbaum and R. Stanley Williams
Physics
Update
From the
Editor
Reference
Frame
Mass without mass II: The medium is the mass-age --Frank Wilczek
Letters
Search
and Discovery
Mapping the interstellar cloud we live in...The
decreasing Arctic ice cover...What really gives a quantum computer
its power?...Experts dismiss doomsday scenarios for RHIC
Washington
Reports
DOE shuts Brookhaven lab’s HFBR in a triumph
of politics over science...Washington ins & outs: Wolff to
leave as NOAO head, Oertel departs AURA...Washington briefings:
One too many mishaps on voyages to Mars; NIF faulted for cost
and schedule overruns; Disappointing report card on K–12 education
Physics
Community
Stakes rise in row over siting UK synchrotron
light source, as fury persists over canceled French facility...UMinn
faculty teach each other science...Chiaverina and Hubisz join
AAPT presidential line...Sartwell is AVS president-elect for 2000...In
brief...
Web
Watch
Books
Making Physics: A Biography of Brookhaven National Laboratory,
1946–1972, R. P. Crease (reviewed by R. W. Seidel)...Active
Galactic Nuclei: From the Central Black Hole to the Galactic Environment,
J. H. Krolik (reviewed by R. A. Daly)...Properties of Materials,
M. A. White (reviewed by T. F. Rosenbaum)...Accelerator Physics,
S. Y. Lee (reviewed by D. Hartill...X-Ray Scattering from Soft-Matter
Thin Films: Materials Science and Basic Research, M. Tolan
(reviewed by M. D. Ward)
New
Products
Focus on data acquisition
We
Hear That
Obituaries
Edwin Thompson Jaynes...Gregory Eugene Stillman
Information
Exchange
©
1999 American Institute of Physics
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