
1) Kind of telescope 2) Mathematician 3) Physicist
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https://www.crosswordclues.com/clue/newtonian

Newtonian refers to the work of Isaac Newton, in particular: ==Supplementary material== ...
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http://en.wikipedia.org/wiki/Newtonian

• (n.) A follower of Newton. • (a.) Of or pertaining to Sir Isaac Newton, or his discoveries. • (a.) Of or pertaining to Sir Isaac Newton, or his discoveries. • (n.) A follower of Newton.
Found on
http://thinkexist.com/dictionary/meaning/newtonian/

Of or pertaining to Sir Isaac Newton, or his discoveries. Newtonian philosophy, the philosophy of Sir Isaac Newton; applied to the doctrine of the universe as expounded in Newton's 'Principia,' to the modern or experimental philosophy (as opposed to the theories of Descartes and others), and, most frequently, to the mathematical theory of universal...
Found on
http://www.encyclo.co.uk/local/20973
New·to'ni·an adjective Of or pertaining to Sir Isaac Newton, or his discoveries.
Newtonian philosophy ,
the philosophy of Sir Isaac Newton; -- applied to the doctrine of the universe as expounded in Newton's 'Principia,' to the modern or experimental philosophy (as opposed to the theories o...
Found on http://www.encyclo.co.uk/webster/N/19
[adj] - of or relating to or inspired by Sir Isaac Newton or his science 2. [n] - a follower of Isaac Newton
Found on http://www.webdictionary.co.uk/definition.php?query=Newtonian
adjective of or relating to or inspired by Sir Isaac Newton or his science; `Newtonian physics`
Found on https://www.encyclo.co.uk/local/20974
of or pertaining to Sir Isaac Newton or to his theories or discoveries: Newtonian physics.
Found on https://www.infoplease.com/dictionary/newtonian
No exact match found.