Celebrate Mole Day
The Annual Fall Luncheon Student Event and Recognition of 50-Year Members
12 Noon,Saturday, October 23, 2010
Winter Hall for Science and Mathematics, Room 210
955 La Paz Road
Santa Barbara, CA
The Featured Speaker will be
Dr.Peter F. Rusch
Chair of the ACS Committee on Nomenclature, Terminology and Symbols
Redefining the Kilogram
Implications for Avogadro’s Number and the Mole
Several decades ago it was proposed that all of the SI Base Units be defined on “invariants of nature.”
The first of these redefinitions was the meter whose definition was based on the defined speed of light. Next came the second whose definition was based on the defined hyperfine splitting of the 133Cs atom.
Presently,the kilogram is defined as the mass of a century-old Pt-Ir alloy cylinder stored under vacuum in a vault near Paris. Periodic comparisons with secondary standards show that over time each of them is either gaining or losing mass. This talk will deal with current efforts to base the definition of the kilogram on some invariant of nature, eliminating the platinum artifact that serves as a mass standard. Implications for Avogadro’s number, and the definition of the mole will also be explored.
Dr. Rusch received his B.S. in 1965 from Southern Methodist University and his M.S. in 1966. He received the Ph.D. in 1971 from the University of Texas at Aus tin. He is currently an electronic information consultant and, from 1975 to 1995, he held various positions with DIALOG Information and Technical Services,Inc.From 1973 to 1975, he was with the Chemical Abstracts Service as an Information Scientist. Dr. Rusch has served in various committees and offices for the National ACS, the Division of Chemical Information, and the Santa Clara Valley Section. He currently serves as Chair for the ACS Nomenclature,Terminology and Symbols Committee.
Dr. Rusch, Dr. Hagen and Dr. Censullo
The cost for the event will be $15 per person, $5 for students.
Members of more than 50 years in ACS are invited to attend at a discounted rate of $5 per person.
A light luncheon of Sandwiches and Salads will be served
Return the form by Monday, October 18, 2010
Flyer can be found here.
For more informatione firstname.lastname@example.org or call James Pavlovich at 805-893-4252