Computational physics fortran version

Why do physicists use FORTRAN?
Fortran has legacy code
Given the long history of Fortran, it is no surprise that a large amount of legacy code in physics is written in Fortran.
Physicists usually try to minimize the amount of coding they do, therefore, if legacy code exists they will use it..

4.6/5AbeBooks Computational Physics is designed to provide direct experience in the computer modeling of physical systems. Its scope includes the essential numerical techniques needed to "do physics" on a computer. Each of these is developed heuristically in Google BooksOriginally published: 1986Author: Steven E. Koonin

Computer software environment with own programming language

Speakeasy was a numerical computing interactive environment also featuring an interpreted programming language.
It was initially developed for internal use at the Physics Division of Argonne National Laboratory by the theoretical physicist Stanley Cohen.
He eventually founded Speakeasy Computing Corporation to make the program available commercially.

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Computational physics fortran version

Why do physicists use FORTRAN?