The predecessor of our department was the Physics program in the department of physics and chemistry, National Taiwan Normal College, founded in 1946. We branched out in 1962, established physics master program in 1974 and Ph.D. program in 1991. For a long time, it has been our duty to train secondary school physics teachers in Taiwan, while we were not forgetting to pursue innovation and improvement in the research. To date, we have produced an Academician of Academia Sinica and close to a hundred of researchers of Academia Sinica and professors of universities. Not to mention, we have also produced many of the high-tech specialists in all kinds of industry. After the secondary school teacher nurturelaw was amended in 1994, on the basis of what we have and with all our efforts, we have been promoting ourselves into an outstanding department emphasizing both basic research and applied science.