Back to Geodesic Math: Errata and Criticism
| 26 | Jan | 2016 | An erratum in the errata: p. 64 is in Chapter 10, not Chapter 9. Thanks to Bryan Lawson for noticing this. Update postal address. |
| 17 | Feb | 2011 | Add 2nd Chapter 5 erratum and two Appendix 1 errata provided by Gerry Toomey. Show less optimism about adding a third section. Use asymmetric quotes everywhere. Change the tense of a verb. Make it clearer I did not find all these errata. |
| 07 | May | 2010 | Add Chapter 15 erratum provided by Gerry Toomey. |
| 13 | Jan | 2010 | In response to Dave Warner's comments, elaborate on the first erratum for Chapter 13 indicating where I got my equation since it doesn't appear explicitly. Also indicate the implications for succeeding equations. Add quadrant -> octant erratum. |
| 08 | Jan | 2010 | Write out Dave Warner's last name. Separate floor dihedral computation problem into a separate item. Note problem with computing nonspherical dihedral angles. Note problem in Chapter 23 table entry. Criticism for Appendix 3 goes for Appendix 2 as well. |
| 04 | Jan | 2010 | Five rather than four shapes in Diagram 5.8. Chapter 11 typo. 120° rather than 60° for the pattern rotation in Diag. 12.1. Note missing parens in Eq. 13.3. Note that Eq. 13.7 needs brackets. Chapter 17 problems. Revise critique of preface. |
| 21 | Jan | 2009 | Add Margaret Glynn's erratum. Update Geodesic link. |
| 30 | Jun | 2008 | Add Val's erratum. |
| 02 | Jan | 2008 | Separate the Errata and Criticism section into two sections, Errata and Criticism. Minor edits. |
| 20 | Dec | 2007 | Note problem in Chapters 8 and 9 with circular reference regarding the explanation of the 54.7356+ value. Change Errata section header to Errata and Criticism. |
| 08 | Dec | 2007 | Use bold face instead of red to mark minor corrections. Email from David Welsh points out that equation 9.1 can be derived using the Pythagorean distance formula and the law of cosines from planar trigonometry and does not require the law of cosines from spherical trigonometry. This eliminated one of my complaints about Kenner's understatement of the math requirement required to understand the book. David also pointed out an error in the description of Diagram 3.1. He has the 2003 edition and says "it looks it's a reprint of the 1976 edition because the errors which you listed on your website are also in the 2003 edition." |
| 03 | Jan | 2006 | Expand the title from "Geodesic Math Errata" to "Geodesic Math: Errata and Criticism" since I certainly do a lot of the latter. Minor edits to introductory remarks. |
| 27 | Dec | 2005 | Note Kenner's miscount of the great circles of the tetrahedron on p. 53. Qualify comment about HP-65 code a little more carefully. |
| 19 | Dec | 2005 | Refer people to Chapter 4 instead of my book for alternative to Chapter 2 force analysis of tensegrity icosahedron. |
| 28 | Nov | 2005 | Add contact information, John Braley's contribution and more background on Kenner. Reorder items so they follow the sequence of the book as much as possible. Reword some of the items to make them consistent with the others. Fix typo. |
| 26 | Nov | 2005 | Add the other marginal notes and corrections I can find in my copy of the book. |
| 25 | Nov | 2005 | First draft. |