Kabir Sir: 25+ Year Exp. Senior Teacher: O/A Levels: Math/Physics/English +++ (Edexcel/Cambridge/IB Syllabuses) @ Mirpur, Dhaka, Mob: +88 01715591000 kabirsir@gmail.com
001) space-time, in physical science, single concept that recognizes the union of space and time, first proposed by the mathematician Hermann Minkowski in 1908 as a way to reformulate Albert Einstein's special theory of relativity (1905).