Newtonian

== English == === Etymology === From Newton + -ian. === Pronunciation === (Received Pronunciation) IPA(key): /njuːˈtəʊ.ni.ən/ (General American) IPA(key): /n(j)uˈtoʊ.ni.ən/ Rhymes: -əʊniən === Adjective === Newtonian (comparative more Newtonian, superlative most Newtonian) Of or relating to Isaac Newton, or his laws and theories. (fluid mechanics, of a fluid) Obeying Newton's law of viscosity; i.e. having a constant viscosity. (physics) Of or relating to classical physics that does not take relativity into account. (astronomy) Being or relating to a type of reflecting telescope using a concave primary mirror and a flat diagonal secondary mirror. ==== Derived terms ==== ==== Translations ==== === Noun === Newtonian (plural Newtonians) A scientist supporting Isaac Newton's views on physics and mathematics. (astronomy) A type of reflecting telescope using a concave primary mirror and a flat diagonal secondary mirror. ==== Translations ====