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<!--StartFragment--><p class="MsoTitle" style="margin-right:-.5in"><b style="mso-bidi-font-weight:
normal"><span style="font-family:"Times New Roman""><font class="Apple-style-span" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span>Seminar on<o:p></o:p></font></span></b></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4"><b style="mso-bidi-font-weight:
normal"><span style="letter-spacing: 1.5pt; ">Modern Optics and Spectroscopy</span></b><span style="font-family:Arial;
mso-bidi-font-family:"Times New Roman";letter-spacing:1.5pt"><o:p></o:p></span></font></p><p class="MsoNormal" align="center" style="text-align:center"><b style="mso-bidi-font-weight:
normal"><i style="mso-bidi-font-style:normal"><font class="Apple-style-span" size="4">Exotic
Molecules in the Laboratory </font></i></b><b style="mso-bidi-font-weight:
normal"><i style="mso-bidi-font-style:normal"><font class="Apple-style-span" size="4">and
in Space</font></i></b></p><div><br></div><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4"><b style="mso-bidi-font-weight:
normal">Michael
McCarthy</b><span style="letter-spacing: 1pt; ">,<o:p></o:p></span></font></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><font class="Apple-style-span" size="4">Harvard
University<o:p></o:p></font></span></p><p class="MsoNormal" align="center" style="text-align:center"><span class="Apple-style-span" style="letter-spacing: 1px; font-size: large; ">Tuesday,
November 8, 2011</span><span class="Apple-style-span" style="letter-spacing: 1px; font-size: large; "> </span></p><p class="MsoNormal" align="center" style="text-align:center"><span style="letter-spacing: 1pt; "><font class="Apple-style-span" size="4">12:00 –
1:00 p.m.</font></span></p><p class="MsoNormal" align="center" style="text-align:center;tab-stops:right 6.5in"><span class="Apple-style-span" style="font-size: large; ">Discoveries of new molecules in space help to provide a foundation
for understanding the role of the chemical bond and organic chemistry on a
cosmic scale and, by extension, an opportunity to begin to address the
interesting but far more complicated questions of biological and chemical
origins, and the issues that relate to them. Most of the organic
molecules so far detected in the interstellar gas -- the space between stars --
by radio telescopes are carbon chains, a configuration of linear carbon which
is unstable at high density, and therefore unfamiliar on Earth. For this
reason, laboratory detection until quite recently has lagged astronomical
discovery of many new carbon</span></p><p class="MsoNormal" style="text-align:justify;mso-pagination:none;mso-layout-grid-align:
none;text-autospace:none"><span style="font-family:Helvetica;mso-bidi-font-family:
Helvetica"><font class="Apple-style-span" size="4">molecules. The application of Fourier transform microwave
spectroscopy to supersonic molecular beams has now largely overcome this
obstacle, yielding in the past decade the laboratory detection of nearly two
hundred new species in our laboratory. These include long carbon chains,<span style="mso-spacerun:yes"> </span>planar rings, silicon- and sulfur-bearing
molecules, and both positively and negatively-charged ions; nearly 10% of these
have already been found in space with powerful radio facilities, including
negatively-charged ions for the first time. This talk will give a broad
overview of our laboratory and astronomical work, and describe new initiatives
now underway.</font></span></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4">Grier Room, MIT Bldg 34-401<o:p></o:p></font></p><p class="MsoNormal" align="center" style="text-align:center"><font class="Apple-style-span" size="4">Refreshments served after
the lecture</font><font class="Apple-style-span" size="6"><o:p></o:p></font></p>
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