Dear Yoshi, thank you very much for letting us know about Kay and we are deeply saddened by the news.  He was such a great mentor and friend and I will cherish such memories for the rest of my life.  Please keep in touch and I will visit you later. With our deepest condolences, Seok-Won, Serena, and Colin from Korea

Dear Yoshi, The Memorial for Kay today was so very special just as he was.  He was such a gentle person and brought those special qualities to our lip reading and signing classes. He had the most beautiful smile.
Love and prayers, kittye ryczkowski

  

Kay's memorial service was the most beautiful I have ever seen. Your family reflected Kay's kindness, intelligence and humbleness. A key takeaway for me was the quote to "Choose kindness over hate and anger."  Our prayers are with you, as you start a phase in your life without Kay's physical presence

His equation for the frequency change caused by a change in fluid viscosity is something every practitioner of quartz crystal microbalances is familiar with!