The Boulder Cosmology Group meets 6PM to 8PM for DVD lectures on the Second and Fourth Wednesdays of the month and reading discussions on Third Mondays at the Main Library. All meetings are free and open to the public. (Monday discussions are usually in the second-floor Flatirons Room and Wednesday lectures in the first-floor Boulder Creek Room). Dates and locations are subject to change. Changes from the normal pattern are noted below.
Note: While the library closes early because of the pandemic, keep up with the Wednesday Lectures on your own at home, and conference with Zoom for the Monday book discussions. We missed quite a few lectures in 2020. If you didn't keep up then you could still watch them on Kanopy. The links are in the 2020 Schedule. Remember you can Kanopy stream Great Courses lectures without affecting your monthly Boulder Public Library Kanopy quota.

See http://www.sackett.net/cosmologyAll.htm for a list of all meetings of the Cosmology Group since it began in 2003.

2023   Second and Fourth Wednesdays: DVD Lectures will resume when we are able to meet in the library's Boulder Creek Room.
When we can meet in the library we use an “interruptus” format: at any point during the lecture anyone in the group can say stop and ask a question and the rest of the group will attempt to answer the question before proceeding. We will attempt to cover two lectures in each meeting. If we don't have time the next DVD lecture meeting will start with the second lecture (and this schedule will be adjusted).

Expected Schedule with Monday book discussions flagged in bold:

January 23, 2023 Book Discussion: Deep Down Things, by Bruce Schumm. Chapters 6 and 7.
Study guide from Jeff. Notes from Paul and Chela on Lie Groups in Physics for Chapters 6 through 8.
The pages 19 to 21 of this document (errata and comments) were added for this 2023 discussion.
Note: This ^^^^ discussion is a week later than usual because of Martin Luther King Day.

February 27, 2023 Book Discussion: Deep Down Things, by Bruce Schumm. Chapter 8.
Study guide from Jeff. Notes from Paul and Chela on Lie Groups in Physics for Chapter 8.
Note: This ^^^^ discussion is a week later than usual because of Presidents' Day.

March 20, 2023 Book Discussion: Deep Down Things, by Bruce Schumm. Chapters 9 and 10. Study guide from Jeff.
A note from Mike on Chapter 9's coverage of the effective mass of a photon: http://www.sackett.net/PhotonEffectiveMass.pdf.
Comments on Jeff's Study Guide from Dave.

April 17, 2023 Book Discussion: More and Different: notes from a thoughtful curmudgeon, by Philip W. Anderson. Chapters I through III.
Reference: A 1972 Anderson paper, http://www.sackett.net/MoreIsDifferent.pdf.

May 15, 2023 Book Discussion: More and Different: notes from a thoughtful curmudgeon, by Philip W. Anderson. Chapters IV, V, VIII, IX, X.

June 19, 2023 Book Discussion: The Magic Furnace: The Search For The Origins Of Atoms, by Marcus Chown. Parts I and II.
     Paul's printable Chronological Glossary for The Magic Furnace (23 pages). Alphabetical Glossary (16 pages).

July 17, 2023 Book Discussion: The Magic Furnace: The Search For The Origins Of Atoms, by Marcus Chown. Part III and Epilogue.
     Paul's printable Chronological Glossary for The Magic Furnace (23 pages). Alphabetical Glossary (16 pages).
Here is a very relevant article about the origins of the elements that Chela and Susan found.

August 21, 2023 Book Discussion: Chandra's Cosmos, by Wallace H. Tucker. Part 1.
Revelations from NASA's X-Ray Observatory. Link to the book: http://sackett.net/chandras-cosmos.pdf.

September 18, 2023 Book Discussion: Chandra's Cosmos, by Wallace H. Tucker. Part 2.
Revelations from NASA's X-Ray Observatory. Link to the book: http://sackett.net/chandras-cosmos.pdf.

October 16, 2023 Book Discussion: Chandra's Cosmos, by Wallace H. Tucker. Part 3.
Nature Magazine article from Peter aboout gravity waves from merging neutron stars.
Revelations from NASA's X-Ray Observatory. Link to the book: http://sackett.net/chandras-cosmos.pdf.

November 20, 2023 Book Discussion: Quantum Field Theory, As Simply as Possible by Anthony Zee. Parts I and II.
Review of this book from Dave: http://www.sackett.net/PetersonReviewOfZeeSimpleQFT.pdf.
Link to the book: http://sackett.net/ZeeQFTSimply.pdf.

December 18, 2023 Book Discussion: Quantum Field Theory, As Simply as Possible by Anthony Zee. Parts III and IV.
Link to the book: http://sackett.net/ZeeQFTSimply.pdf.

January 22, 2024 Book Discussion: Quantum Field Theory, As Simply as Possible by Anthony Zee. Chapters V.1 through V.4.
Link to the book: http://sackett.net/ZeeQFTSimply.pdf.
Note: This ^^^^ discussion is a week later than usual because of Martin Luther King Day.

February 19, 2024 Book Discussion: Quantum Field Theory, As Simply as Possible by Anthony Zee. Chapters V.5 to the end.
Link to the book: http://sackett.net/ZeeQFTSimply.pdf.

For more information, e-mail Bill (bill4gb AT gmail DOT com) or call him at 3.449.4136.

This is http://www.sackett.net/cosmology.htm, last updated November 12, 2023.