How to Join
Symmetry...the Broken Looking Glass
Part 1 of a 2 part crystallography series
by Bill Mikuska
Friday, March 18, 2011
7:30 PM: Presentation
Symmetry can be defined as a similarity of form, that is, correspondence of opposite parts
with respect to shape, size and orientation. In addition, there are various orders of
symmetry. This talk will introduce point and space group symmetries, symmetry elements
and operations and some of their implications to the study of the arts and sciences.
Knowledge of symmetry aspects of a real or fictitious object allows us to look for or
predict properties of that object. For molecular species such properties may be specific
rotation, net electric and magnetic dipole moments, and the number and kinds of
electromagnetic interactions. Crystalline and other solid materials also exhibit
orientation dependent properties. Topics include chirality, crystals and microscopy.
| A B – B A | ≠ 0 or:
Going from A to B is not always the same as going from B to A.
Bill C. Mikuska received his BS and MS in chemistry from the Illinois Institute
of Technology with emphasis in physical chemistry and chemical physics. Research
studies included gas-surface interactions by molecular beams and X-ray induced defects
in alkali halide crystals. A 30 year teaching career at Triton College followed where
he engaged students to use polarized light microscopy in independent study projects.
He was president of the State Microscopical Society of Illinois for 9.5 years and has
received the Emile Chamot award. Bill is also a fellow of the Royal Microscopical
Society. He taught classes in polarized light microscopy to high school students,
high school and middle school teachers, and engineers at Fermi National Accelerator
Laboratory and at the Argonne National Laboratory. Most recently he became a member
of the Rowfant Club, a bibliophilic society founded in Cleveland in 1892. His interests
range from classical music (organ performance and practice), Venetian and French glass,
antique bronzes, art, meteoritics, mineralogy, and botany.
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