THE BOSTON AREA PHYSICS CALENDAR
Week of March 24-March 30, 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 ENTRIES RECEIVED AFTER THE DEADLINE WILL NOT 
BE PUBLISHED.           
                
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Monday, March 25, 1996
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Monday, March 25, 1996, 11:45 a.m.
Harvard-Smithsonian Center for Astrophysics
Informal Seminar
Atomic and Molecular Physics Division 
Pratt Conference Room
``Theory of Intermolecular Interactions''
DR. KRZYSZTOF SZALEWICZ
University of Delaware

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Monday, March 25, 1996, 4:00 p.m.
Northeastern University
CIRCS Seminar 
Dana Building, Room 114
``Single and Collective Vortex Dynamics in josephson
Junction Arrays''
PROFESSOR J. VAN HIMBERGEN
Theoretical institute, University of Utrecht

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Monday, March 25, 1996, 4:00 p.m.
 Worcester Polytechnic Institute
Colloquium 
Olin Hall, Room 107
``The Boundary Element Method and Surface Plasmons''
DR. RAYMOND GOLOSKIE
Worcester Polytechnic Institute
Coffee will be served in Olin Hall, Room 118 at 3:45 p.m.

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Tuesday, March 26, 1996
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Tuesday, March 26, 1996, 2:30 p.m.
Tufts University
Joint Tufts-MIT-CfA Cosmology Seminar 
Anderson Hall, Room 211
``Gravitational - strength scalars and Cosmology''
PROFESSOR THIBAULT DAMOUR
IHES, FRANCE
 
Abstract:
 
String theory abounds with light scalar fields having 
gravitational-strength couplings (the dilaton and various moduli).  
These fields a priori create a host of observational problems in
low-energy gravitational physics and cosmology.  Mechanisms for solving
these problems, and their observable consequences, notably in
cosmology, will be discussed.  

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Tuesday, March 26, 1996, 4:00 p.m.
Brandeis University
Martin Weiner Lecture Series
Physics Colloquium
Physics Building, Abelson 131 
``Noise in Quantum Hall Liquids''
DR. DENISE FREED
Bunting Institute
Refreshments will be served in Room 333 at 3:30 p.m.

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Tuesday, March 26, 1996, 4:00 p.m.
Clark University
Colloquium
Co-sponsored by the Departments of Biology, Chemistry, 
Mathematics/Computer Science and Physics 
 
Sackler Science Center, Room N-104
``Out of this World Experiences: From Balloons
to the Space Station''
DR. CAROL JO CRANNELL
NASA Goddard Space Flight Center

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Tuesday, March 26, 1996, 4:00 p.m.
Northeastern University
CIRCS Seminar
Dana Building, Room 114
``From Chaos to Worms: Patterns in Nematic Liquid Crystals''
DR. M. DENNIN
Chemistry and Biochemistry Department
UCLA
Refreshments will be served at 3:45 p.m.

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Wednesday, March 27, 1996
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Wednesday, March 27, 1996, 11:45 a.m.
Northeastern University
 
***** Diamond Anniversary Lectures *****  
 
A series of ten pedigogical lectures
Lecture III
 
114 Dana (Physics Department)
``Exactly Solvable Models in Statistical Mechanics''
DR. RODNEY J. BAXTER
Australian National University

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Wednesday, March 27, 1996, 4:00 p.m.
University of Massachusetts at Lowell
Spring Colloquia 1996 
Olney Room 428
``Semiconductor Laser Diodes for Optical Fiber 
Communications''
DR. RICHARD SAHARA
Lasertron
Refreshments will be served at 3:30 p.m. 

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Wednesday, March 27, 1996, 4:15 p.m.
Boston College
Colloquium 
Higgins Hall, Room 354
``Teaching Feynman's Simple Quantum Mechanics''
PROFESSOR EDWIN F. TAYLOR
Boston University
Tea will be served at 3:30 p.m. 

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Wednesday, March 27, 1996, 4:30 p.m.
Boston University
Joint Theory Seminar 
Physics Research Building
(3 Cummington Street) Room 593
``Modelling Parent and Baby Universes by Strings''
PROFESSOR VALERY RUBAKOV
Institute for Nuclear Research
of the Russian Academy of Sciences
Refreshments will be served at 4:00 p.m. 
 
Please call (353-2600) one day in advance for parking.

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Wednesday, March 27, 1996, 5:00 p.m.
Harvard University/Center for Astrophysics
Joint Atomic Physics Seminar 
Jefferson Laboratory, Room 356
``S-Wave Atomic Scattering''
DR. KURT GIBBLE
Yale University
Tea will be served at 4:30 p.m. 

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Thursday, March 28, 1996
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Thursday, March 28, 1996, 12:30 p.m.
Boston University
Biophysics Seminar 
SCI, Room 352
``Supported membranes for biological atomic force 
microscopy in solution''
PROFESSOR JIE YANG
University of Vermont 
 
Abstract:
 
Atomic force microscopy has shown a great potential in
structural biology for its high spatial resolution and the capability of
operating in solution.  We have found that for high-resolution structural
studies of membranous specimens, supported bilayers are essential.  In
this talk, I will show examples of using supported bilayers as substrates
for high-resolution imaging of membrane-bound macromolecules, such as
cholera toxin and closely packed DNA, and will discuss related possible
mechanisms.  Supported membranes are also ideal model systems for studies
of 2-D structures, such as the ripple phase and various membrane
domains.  We also used mica chips as substrates to study the phase
behavior of supported bilayers with a DSC, and detected a new phase in
supported DPPC bilayers.  The new phase has a phase transition
temperature about 2 degrees above the main phase transition.  Physical
origin of the high-temperature phase will be discussed. 

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Thursday, March 28, 1996, 2:00 p.m.
 Boston College
Condensed Matter Seminar 
Higgins Hall, Room 354
``The Hubbard Model and the Fermi Surface in Two Dimensions''
DR. MIKLOS GULACSI
Institute of Advanced Studies
Australian National University 

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Thursday, March 28, 1996, 3:00 p.m.
 Harvard University
Special Seminar of the String Theory Group 
Room No. 256
``Orbifolds of M-Theory''
SUNIL MUKHI
Tata Institute of Fundamental Research, BOMBAY 

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Thursday, March 28, 1996, 4:00 p.m.
 Clark University
Colloquium 
Sackler Science Center, Room N-105
``Estimating Human Exposures to Gaseous Contaminants:
Experimental Techniques for Indoor and Outdoor Air''
DR. MARC FISCHER
Lawrence Berkeley Laboratory

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Thursday, March 28, 1996, 4:00 p.m.
  Harvard-Smithsonian Center for Astrophysics
Scientific Colloquium 
 60 Garden Street (Phillips Auditorium)
``Hot Dust in Galaxies''
DR. GARETH WYNN-WILLIAMS
Institute for Astronomy
University of Hawaii 
 
Abstract:
 
I shall present results from a spectroscopic survey of infrared galaxies
made with UKIRT in the wavelength range 8-13 mu-m.  Among the topics I
shall discuss are:

a)      Most  galaxies with luminosities in the range 10^11 - 10^12 
L\underbar { }sun have a starburst-like spectrum dominated by PAH emission 
features. Only a minority show silicate absorptions or flat spectra.\par
 
 b)      Spatially-resolved observations of the nearby starburst galaxy NGC 253
show no evidence of silicate absorption. The variations in the relative
strengths of the other 8-13 mm spectral features correspond to variations in
the physical conditions across the starburst region of the galaxy.\par

c)      We find a very deep silicate absorption feature in the galaxy
08572+3915. We argue that deep silicate features in this and other galaxies
such as NGC 4418 and Arp 220 cannot be caused interstellar extinction;  they
are probably produced by radiation transfer effects in a thick hot dust
shell that surrounds an obscured AGN.

Tea will be served at 3:30 p.m.

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Friday, March 29, 1996
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Friday, March 29, 1996, 12:30 p.m.
 Boston University
Condensed Matter Seminar 
590 Comonwealth Avenue, Room 352
``Topography of Rough Interfaces: From Vertex
Models to STM Image Analysis''
DR. J. KONDEV
Brown University 
Please call (353-2600) one day in advance for parking.

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Friday, March 29, 1996, 1:00 p.m.
 Tufts University
Lunchtime Cosmology Seminar 
Robinson Hall, Room 258
``Multiple Black Holes in (2+1) - dimensional Gravity''
PROFESSOR DIETER BRILL
University of Maryland 

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Friday, March 29, 1996, 2:30 p.m.
 Tufts University
***  Special Seminar  *** 
Anderson Hall, Room 206
``An appropriate role for physics education research:
multiple perspectives on student knowledge and reasoning''
PROFESSOR DAVID HAMMER
Department of Education
Tufts University 

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Friday, March 29, 1996, 4:30 p.m.
Brown University
Condensed Matter Seminar 
Barus & Holley Building, Room 751
``Effect of dilute impurities on the superfluid transition''
PROFESSOR MOSES CHAN
Pennsylvania State University 

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Friday, March 29, 1996, 4:30 p.m.
 Harvard University
Seminar on Probability, Analysis and Mathematical Physics
 
***  Please note the permanent time change  ***

Jefferson Laboratory, Room 356
``The Ground State Energy of the Polaron:
A Problem in Field Theory and Condensed Matter Physics''
PROFESSOR E. LIEB
Princeton University 

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 A Friendly Reminder: 
 
The Deadline for the Mar. 31\char123  April 6, 1996 Issue is: 
 
MONDAY, March 25, 1996 at 11:00 a.m. 

End of Document.