Dr. Ian Dagg, chair of UW's physics department and a faculty member since 1959, died suddenly Friday evening. He had just completed a game of tennis at the Waterloo Tennis Club. He was 64. Dagg was extremely popular and highly respected by his students and well-liked by faculty and staff, says the science faculty's executive assistant, Helena Hahn. He chaired the physics department since July 1988, except for a sabbatical at the University of British Columbia from January to June 1992. His present three-year term was to end in 1994. His tenure as chair was characterized by "openness, fairness and a warm sense of humour, which both the faculty and staff members in the physics department appreciated", colleagues say. Early in his career Dagg concentrated his research on collision-induced absorption in gases at high pressure using microwaves and infrared radiation. He collaborated with Dr. Glyn Reesor. One of their former graduate students, Bill Smith, has continued as a research associate in Dagg's laboratory. More recently Dagg started a research project using electric field induced absorption in gases at normal pressure using Fourier Transform infrared spectroscopy, a continuation of work started on his recent sabbatical. At the time of his death Dagg was collaborating with physics professor Dr. Tony Anderson and chemistry professor Dr. Peter Bernath. "We were working together on the high voltage gas cell until about 5 p.m. on Friday," Anderson says. Dagg held a three-year research grant from the Natural Sciences and Engineering Research Council. He was well regarded in his research area and had participated in many conferences and workshops over the years, Anderson adds. Dagg was teaching one course this term, Physics 122. Dr. Ken Woolner will take over these duties. Dagg currently had no graduate students. Dagg was also active on many university committees, having been chair of the academic freedom and tenure committee and chair of many Faculty Association general meetings. Economics professor Dr. Bob Needham, a FAUW colleague of Dagg's for many years said of Dagg: "In all of his professional work Ian was deeply concerned with questions of justice and with fairness and equality in the treatment of people. He was concerned with openness and accountability in university governance. "Ian brought to his work a calming influence and great common sense. His influence was particularly noticeable in crisis periods -- he would take the lead in pointing out directions to be taken and emphasis to be given. He had the gift of being able to foresee the constraints that would be met and of how to minimize their influence." Dagg is survived by his wife, Dr. Anne Innis Dagg, well known for her role in UW's independent studies program, and children Hugh, Ian and Mary. Cremation took place at Parkview Crematorium. A memorial service is tentatively set for Friday, February 12, with details yet to be announced. Memorial donations can be made to Amnesty International. An acting chair for the physics department was to be named this week.