This website contains presentations that the author has made and wishes to make available to the audiences for the original presentation, to selected others (including family members), and to whomever else stumbles across them (nothing secret or confidential here…).

Most of these presentations relate to Cosmology. The original Cosmology presentations were made to the Senior University of Georgetown, TX in 1998, 1999, and 2009; to the Georgetown Unitarian Universalist Fellowship (2009); and to residents of the Querencia life-care community in Austin, TX (2010), where the author currently lives. The two 2009 presentations on Cosmology update the 1998-1999 material with advances made during the first decade of the 21st century, and the presentations from 1998 and 1999 are not included on this website. Links to these Cosmology presentations appear in the right sidebar.

The last link in the sidebar menu is a talk on Science & Religion given to a Seminar on that subject at the First Unitarian Universalist Church of Austin, TX on July 10, 2016. This link leads to a “blog page” containing the first 3-4 lines of text of the 11 slides used in this presentation. The full text of each slide can be obtained by clicking on the title of each slide, or on the “Continue reading –>” at the end of the 3-4 lines of text.


The author of the content on this website is Dr. Peter Roll. He held university positions over 40 years, on the physics faculty at Yale, Princeton and the University of Minnesota, and in technology administration at  Minnesota and Northwestern University.  On retiring to Georgetown, TX in 1995, he founded  the Sun City TX Computer Club.  Dr. Roll lectured on Cosmology at the Georgetown Senior University in 1998 and 1999, and most recently fall 2009.  His experience in this area comes from his time at Princeton (1960-65), where he was involved in precision gravitational measurements and in discovery of the Cosmic Microwave Background Radiation.  His teaching experience has been focused on college-level introductory physics and on musical acoustics for students in music and music education.

Dr. Roll’s academic degrees are in Physics, all from Yale University between 1954 and 1960.  He has published work in the fields of nuclear physics: nuclear reactor design; gravitation and cosmology; musical acoustics; physics teaching; and planning and administration of computing resources.  He has also been a professional musician (French horn) and played in professional and community orchestras, bands, and chamber music groups from 1944-2004.

September 2015; revised July 2016