Dr. Jose L. Balduz, Jr. talked about
Additional Dimensions in Spacetime".
W 9/13/00, 4:45pm, WSC 109

This will be an informal discussion primarily based on two Scientific American articles, and references therein. The main article appeared in August 2000, pp.62-69: "The Universe's Unseen Dimensions." The second article appeared in February 1998, pp.64-69: "The Theory Formerly Known as Strings." Both have references to other interesting articles, and two websites. One is about table-top measurements of gravity: http://mist.npl.washington.edu/eotwash/ . The other is about superstrings: http://superstringtheory.com/ .The two articles are available online. They are listed below, with information you need to find them on the web through GALILEO. These are full-text versions only, so you won't see the figures. Of course, you can go to Jack Tarver Library and read these articles the old-fashioned way, on paper, including the figures.

Title: The Universe's UNSEEN DIMENSIONS.
Source: Scientific American, Aug2000, Vol. 282 Issue 8, p62, 8p, 8 diagrams, 1c
Author(s): Arkani-Hamed, Nima; Dimopoulos, Savas; Dvali, Georgi

Abstract: Describes a physics theory in which everything we see is confined to a three-dimensional membrane that lies within a higher-dimensional realm and is based on developments in string theory. Problem of the weakness of gravity, which the theory would solve, and with the Planck scale; Why we cannot see the dimensions; Types of experiments which would substantiate the theory; Implications, including the possibility that dark matter resides in parallel universes.

Available(full-text version) at MasterFILE Premier database, at EBSCO Host, through GALILEO and Jack Tarver Library homepage.

Title: The Theory Formerly Known as Strings.
Source: Scientific American, Feb98, Vol. 278 Issue 2, p64, 6p, 4 diagrams, 2 graphs, 3c, 2bw
Author(s): Duff, Michael J.

Abstract: States that a theory that would best unite gravity with quantum mechanics was based on strings. Information on string theory; Incompatibility of 20th century physics, quantum mechanics and Einstein's general theory of relativity.

Available(full-text version) at MAS FullTEXT Ultra database, at EBSCO
Host, through GALILEO and Jack Tarver Library homepage.