July 30, 2010
Issue #35


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16. Reader's Guide to Larsen Slide Presentations

By Steven B. Krivit

Lewis Larsen, co-developer of the Widom-Larsen ultra-low-momentum neutron (ULMN) theory of LENRs, has been prolific in his Web-based slide presentations. I have reviewed his first six presentations and present below a very brief, subjective guide to help readers navigate efficiently. Larsen has not identified sequence numbers for his slides (we have enumerated them in our listing); nor has he given concise titles for his slides. This review, as well as our Web portal, should help readers navigate Larsen's slides.

In many cases, his later presentations include information repeated from earlier presentations or repeated with improved text and graphics. For this reason, new readers are advised to begin with Slide Presentation #4.

Slide Presentation #1, Jan. 30, 2009 (19 pages)

  • Is relatively low-tech, not too heavy on science.
  • Provides a business research and development perspective.

Slide Presentation #2, Feb. 07, 2009  (6 pages)

  • Introduces general concept of nucleosynthesis; however, technical explanations of ULMN are covered better in presentation #3.
  • Introduces nucleosynthesis in stars. Nucleosynthesis in LENR is covered in depth in presentation #5.

Slide Presentation #3, Feb. 14, 2009 (24 pages)

  • Covers some historical background of Widom-Larsen theory and LENR field.
  • Discusses D+D “cold fusion” theory presented by Peter Hagelstein to Department of Energy in 2004.
  • Discusses 2004 Department of Energy LENR report.
  • Slide #20 is unique; content does not appear in any of Larsen's other slides. Provides single-page visual overview of Larsen's conceptual model of LENRs.
  • Slides #21 and #22 are unique; content does not appear in any of Larsen's other slides.  These slides portray how LENR relates to broad spectrum of new and existing science.

Slide Presentation #4, June 25, 2009 (78 pages)

  • Is a massive, encyclopedic presentation. It provides not only a valuable educational tool for Widom-Larsen theory but also a tool to better understand weak interactions in general.
  • Slides #14-26 provide deep technical explanation of Widom-Larsen theory.
  • Slide #32 dispels the myth that the only way helium-4 can be produced in LENR is through D+D "cold fusion."
  • Slide #38 gives perspective on distinct signatures of fission missing from LENRs.

Slide Presentation #5, Sept. 3, 2009 (65 pages)

  • Is another very scientifically dense, heavy technical presentation.
  • Slides #10-18 go deeply into nucleosynthesis, introduce graphical display of diverse array of some of the possible weak interactions in LENR.
  • Slides #19-37 examine SRI International replication of Lester Case experiment and mystery of disappearing helium-4.
  • Slide #23 reveals danger of taking too narrow a view of data, omitting larger context.

Slide Presentation #6, Nov. 25, 2009 (61 pages)

  • Slide #16 introduces best (so far) visual representation of four-step WL process.
  • Slide #17 introduces excellent visual representation of collective effects in LENR.
  • Slide #18 introduces high-level overview of WL process. It is similar in concept to slide #20 from presentation #3.
  • Slides #26-40 discuss Tadahiko Mizuno’s LENR experiments with phenanthrene.


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