赵恒元教授因病于1994年2月11日晚12时不幸逝世，享年79岁．在赵先生逝世周年之际，我们作为他的同行和挚友，也代表所有他的同事和学生，谨写这篇短文，以表达对他的怀念和追思．赵先生1915年2月生于山西省寿阳县．1938年毕业于北京师范大学物理系．随后五十多年从事高等学校 Professor Zhao Hengyuan died of illness at the age of 12 on the evening of February 11, 1994, at the age of 79. On the anniversary of the death of Mr. Zhao, we, as his colleagues and best friends, and on behalf of all his colleagues and students, would like to write this essay in order to express his nostalgia and memory. Mr. Zhao was born in Shouyang County, Shanxi Province in February 1915. In 1938 graduated from Beijing Normal University Physics Department. After more than 50 years in higher education