Ni Wei-tou (; born 1944 in Zhenhai, Ningbo, Zhejiang) is a Taiwanese physicist, who graduated from the Department of Physics of National Taiwan University (NTU), and got his PhD of Physics & Mathematics from California Institute of Technology. After his retirement on 1 October 2000, he is now appointed as a professor emeritus of the Department of Physics of National Tsing Hua University (NTHU) at Hsinchu, Taiwan, since 2006. He is an expert of theoretical and experimental gravitational physics, astrophysics, cosmology, particle physics, and quantum optics etc. He is famous for his alternative theories of gravitation to general relativity, such as Ni (1972), Ni (1973), and Lee, Lightman & Ni (1974). He has been devoted to popular science in Taiwan. Books 2017 One Hundred Years of General Relativity: From Genesis and Empirical Foundations to Gravitational Waves, Cosmology and Quantum Gravity (The 2 Volumes) References External links Prof. Ni Wei-Tou's intro page at NTHU (in Chinese) 1944 births Living people National Taiwan University alumni Relativity theorists 20th-century Taiwanese physicists Academic staff of the National Tsing Hua University 21st-century Taiwanese physicists Writers from Ningbo Scientists from Ningbo Taiwanese people from Zhejiang