Keith J. Farmer

First Name:Keith J.
Last Name:Farmer
Web Address:
Last Change:2001-12-20
Number of Files:5 (344th most prolific)
Number of Downloads:36,348 (308th most downloaded)

Ephem 1.0   (details) 48 ENG   13 KB / 6 KB
ScreenshotThis library is intended to provide the user with various ephemeris-generating routines, particularly in the calculation of planetary, solar, and lunar positions, and in the estimation of eclipse parameters. Most of the routines used may be found in Duffet-Smith (see the bibliography), although the iterative solution for Kepler's equation is found on pages 85-87 of the AE Roy reference, and none of the routines claim to be speedy or efficient -- mostly due to repeated calculations of positions with no saving of previous results. They have been tested against the examples provided in the sources and match with a reasonable amount of error (probably due to round-off in the examples). Planetary longitudes have been checked against the Menzel and Duffet-Smith sources at random, and are within a degree. A level of familiarity with astronomy and orbital mechanics is assumed.
By Keith J. Farmer. 2001-12-20

L1791 2001.1209   (details) 49/50 ENG   7 KB / 4 KB
Tools library which makes it easy to extend the built-in choose menus, such as the APPS menu, toggle flags, hide variables, call $EXTPRGs, and more.
By Keith J. Farmer. 2001-12-20

PFIT   (details) 49/50 ENG   3 KB / 1 KB
Polynomial fitting program using least-squares fits.
By Keith J. Farmer. 2000-02-13

Quantum Physics 1.0 Beta   (details) 48 ENG   11 KB / 9 KB
ScreenshotSolves many problems in undergraduate modern physics. Includes semi-empirical mass function, LS coupling, various energy/frequency conversions, Hartree theory, Paschen-Bach effect, etc. Also includes functions for set operations (used internally, made available). For the G series only.
By Keith J. Farmer. 1997-08-21

Symbolic Vector Library 1.1   (details) 48 ENG   7 KB / 6 KB
SYMVEC (SV) is a User RPL-written library of symbolic vector functions for use in mathematics and the sciences. Support is given for Cartesian, Cylindrical, and Spherical polar coordinates, as well as general orthogonal coordinates (whose definitions are supplied by the user). The current coordinate mode is sensed automatically by the library, and the user may override the sensing and force execution in a chosen coordinate system. The SV functions are, for the most part, usable in algebraic expressions (although their inputs may not be -- the intention is for simplification of programming).
By Keith J. Farmer. 2001-12-20

Part of the HP Calculator Archive,
Copyright 1997-2024 Eric Rechlin.