僧一行(673-727),俗姓张,名遂,唐代巨鹿(今属河北巨鹿县)人,我国杰出的天文学家,在世界上首次推算出子午线纬度一度之长,编制了《大衍历》。在我国佛教界,僧一行可能是唯一一位名垂青史的科学家。 Monk and his entourage (673-727), the surname Zhang, then the name, the Tang Dynasty Julu (now Hebei Julu County), our outstanding astronomer, in the world for the first time calculated the meridian latitude for a long time, prepared a “ Big calendar. ” Buddhists in our country, the monk and his party may be the only scientist famous history.