THE BOSTON AREA PHYSICS CALENDAR
        Week of February 18-February 24, 1996

The Boston Area Physics Calendar is published weekly during 
the academic year by the Department of Physics and Astronomy 
at Tufts University.  You may send your announcements by 
e-mail (bapc@tuhepa.phy.tufts.edu) or FAX:(617-627-3878).  
We cannot accept announcements by telephone.  Entries should 
reach us no later than 11:00am on the Monday preceding the week 
of the event. ENTRIES RECEIVED AFTER THE DEADLINE WILL NOT 
BE PUBLISHED.           
                
_____________________________________________________________                
				Monday, February 19, 1996
				
               		President's Day
_____________________________________________________________
Monday, February 19, 1996, 3:00 p.m.

Clark University
Physics Department Colloquium
Sackler Science Center, Room N-104
``Phase diagrams of eye lens protein solutions''
DR. GEORGE THURSTON
Massachusetts Institute of Technology
_____________________________________________________________
Monday, February 19, 1996, 4:00 p.m.
 
Worcester Polytechnic Institute
Colloquium
Olin Hall, Room 107
``Generalizing the Poynting Vector''
DR. DONALD F. NELSON
Worcester Polytechnic Institute
Coffee will be served in Olin 118 at 3:45 p.m.

_____________________________________________________________
Tuesday, February 20, 1996 
_____________________________________________________________

Tuesday, February 20, 1996, 12:00 noon
 
Massachusetts Institute of Technology
Rowland Institute for Science
Seminar on Modern Optics and Spectroscopy 
Ronald E. McNair Building
Marlar Lounge (37-252)
``New Measurements on Laser Cooling: Bragging about
optical lattices''
WILLIAM D. PHILLIPS
N.I.S.T. 
Refreshments will be served following the Seminar.
_____________________________________________________________
Tuesday, February 20, 1996, 2:00 p.m.
 
Massachusetts Institute of Technology
Special Seminar
Building 6, Third Floor
Center for Theoretical Physics Seminar Room
``Some Properties of Open-String Theories''
PROFESSOR AUGUSTO SAGNOTTI
University of Rome, Tor Vergata
_____________________________________________________________
Tuesday, February 20, 1996, 2:30 p.m.
 
Massachusetts Institute of Technology
Joint Tufts-CFA-M.I.T. Cosmology Seminar
Center for Theoretical Physics Seminar Room
Building 6, Third Floor
``The Power of Velocities''
TSAFRIR KOLATT
Harvard-Smithsonian Center for Astrophysics
_____________________________________________________________
Tuesday, February 20, 1996, 4:15 p.m.
 
Boston University
Center for Computational Science Seminar
Stone B-50 (675 Commonwealth Avenue)
``Cellular Automata Machines: Exploring the Ultimate
Physical Limits of Computation''
NORMAN MARGOLUS
Center for Computational Science
 
Abstract:
 
 The ultimate scale, speed and efficiency of computers are limited
   by fundamental properties of physical dynamics: by the speed of
   light, by thermodynamics, and by quantum mechanics.  Reversible
   cellular automata (CA) computations are adapted to deal with
   these constraints.  Current CA machines make it possible to begin
   to harness the power of fine-grained spatially-organized computation
   today, and to explore algorithms that will run on the high-efficiency
   CA hardware of the future.  In this talk, we will discuss the CA
   machines that we have developed, some of the work being done with
   them, and their future evolution.  The talk will include a live
   demonstration of our CAM-8 CA machine. 
_____________________________________________________________
Tuesday, February 20, 1996, 4:15 p.m.
 
Massachusetts Institute of Technology
Astrophysics Colloquium
Marlar Lounge, Room 37-252
``Superluminal Sources: When Have We Seen Them All''
DR. RENE VERMEULEN
Caltech
Refreshments will be served at 3:45 p.m.
_____________________________________________________________
Tuesday, February 20, 1996, 4:15 p.m.
 
Massachusetts Institute of Technology
LNS Colloquium
Kolker Room, 26-414
``LISS, the latest SPIN from Indiana''
DR. JOHN CAMERON
University of Indiana
Refreshments will be served in Kolker Room, 26-414 at 3:45 p.m.
_____________________________________________________________
Tuesday, February 20, 1996, 4:30 p.m.
 
Harvard University
Harvard-M.I.T. Mathematical Physics Seminar
Science Center 507
``Knot Invariants from Wilson Loops in BF Theories''
ALBERTO CATTANEO
Harvard University

_____________________________________________________________
Wednesday, February 21, 1996 
_____________________________________________________________ 

Wednesday, February 21, 1996, 3:00 p.m.
 
Massachusetts Institute of Technology
Joint Lattice Seminar
Center for Theoretical Physics Seminar Room
Building 6, Third Floor
``Elimination of spurious lattice fermion solutions with the
lattice-continuum functions''
DR. H. C. REN
Rockefeller University
_____________________________________________________________
Wednesday, February 21, 1996, 4:15 p.m.
 
Boston College
Physics Department Colloquium
Higgins Hall, Room 354
``Laboratory Solar Physics: Effect of an Electric
Field on the Dielectronic Recombination of $C3+$''
DAN REISENFIELD
Harvard University, Department of Astronomy
Tea will be served in Higgins Hall, Room 354 at 3:30 p.m.
_____________________________________________________________
Wednesday, February 21, 1996, 4:30 p.m.
 
Massachusetts Institute of Technology
Joint Theory Seminar
Center for Theoretical Physics Seminar Room
Building 6, Third Floor
``Duality and 4d String Dynamics''
SHAMIT KACHRU
Harvard University
Refreshments will be served at 4:00 p.m.

_____________________________________________________________
Thursday, February 22, 1996 
Washington's Birthday
_____________________________________________________________

Thursday, February 22, 1996, 12:00 noon
 
Harvard University
Condensed Matter Theory Seminar
Pierce 100F
``Ridges in Crumpled Elastic Membranes: From Car Crashes
to Mountain Range Formation to Cell Membranes''
ALEX LOBKOVSKY
University of Chicago
_____________________________________________________________
Thursday, February 22, 1996, 1:30 p.m.
 
Harvard University
Materials Science Seminars 
Gordon McKay Laboratory
David Turnbull Room (402)
``Nanometer-Scale Studies of the Dynamic Evolution of 
Defects and Degradation Modes in Semiconductor Materials and Devices''
PROFESSOR ROBERT HULL
 Department of Materials Science and Engineering
University of Virginia 
 
Abstract:
 
		I will describe novel applications of focused electron and ion
beams to (i) Nanometer-scale analysis of defects, stresses and doping
distrbutions in semiconductor materials and devices, and (ii) Studies of
the stability of these microstructural features to the extreme mechanical,
thermal, electrical, and optical stresses which can exist during
(opto)electronic device fabrication and operation.  The goal is to develop
complete nanostructural descriptions of semiconductor heterostructures and
devices, and to correlate structural and defect properties with electronic
properties, optical properitis, and degradation modes.  We are also
extending these studies into the time domain, developing real-time, in-situ
techniques for nanometer-scale imaging of the evolution of defects and
degradation modes in semiconductor materials and devices.  Examples will be
given of real-time imaging during application of mechanical, thermal,
electrical, and optical stresses. 
_____________________________________________________________
Thursday, February 22, 1996, 2:30 p.m.
 
Brown University
Theoretical Seminar
Barus \char38 \enskip Holley, Room 555
``How Good is Newton's Law of Gravity?''
PROFESSOR P. MANNHEIM
University of Connecticut
_____________________________________________________________
Thursday, February 22, 1996, 4:00 p.m.
 
Harvard-Smithsonian Center for Astrophysics
Scientific Colloquium
60 Garden Street (Phillips Auditorium)
``Distances and Ages In and Beyond our Galaxy''
DR. DIMITAR SASSELOV
Harvard-Smithsonian Center for Astrophysics
 
Abstract:
 
The primary distance indicators are established in our Galaxy and
its companions. The question of distances is often inter-related to the
questions of ages and chemical composition. To follow these connections
we first examine the current situation with our overall knowledge of
distances to the nearby galaxies. The agreement of four basic methods is
good within large uncertainties. In view of improving the situation we
examine in detail the most precise primary distance scales - those of
the Cepheid and RR Lyrae variable stars, and come to interesting 
implications of the current understanding of the distances and 
ages in the Universe. 
 
Tea will be served at 3:30 p.m.
_____________________________________________________________
Thursday, February 22, 1996, 4:05 p.m.
 
Northeastern University
Condensed Matter Seminar
114 Dana
``Dielectric Noise Spectroscopy of Glasses and Other Complex
Systems''
PROFESSOR NATHAN ISRAELOFF
Northeastern University
Refreshments will be served at 3:50 p.m.
_____________________________________________________________
Thursday, February 22, 1996, 4:15 p.m.
 
Massachusetts Institute of Technology
Colloquium
Room 10-250
``Disorder and the Superfluid Transition''
MOSES H. W. CHAN
Pennsylvania State University
Refreshments will be served in Room 26-110 at 3:45 p.m.
_____________________________________________________________
Thursday, February 22, 1996, 4:30 p.m.
 
Brown University
Condensed Matter Seminar
Barus & Holley, Room 751
``Zeros of Partition Function at Asymmetric 
First Order Transitions''
PROFESSOR KOO CHUL LEE
Brown University

_____________________________________________________________
Friday, February 23, 1996 
_____________________________________________________________

No Scheduled Events. 




_____________________________________________________________

A Friendly Reminder:
 
The Deadline for the Feb. 25 - Mar. 2, 1996 Issue is:

TUESDAY, February 20, 1996 at 11:00 a.m.



End of Document.