<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Andrew, John and Martin and others,<div class=""> Thanks for your comments and clarifications which were very helpful.</div><div class=""> I’ve attached my nearly final draft for my SPIE talk, now titled “Electrons are spin 1/2 charged photons generating the de Broglie wavelength”. Comments are welcome!</div><div class=""> Richard</div><div class=""></div></body></html>