The UM-StL Anyspeed Applet
Version 1.2 Beta Test Site

For background, see our official-release applet page. This is the test version of the applet, modified to include an xtv plot of variable values which should be updated with each recalculation. Dimensionless form means that distances are in units of c^2/alpha where alpha is proper acceleration, times are in units of c/alpha, and of course velocities are in units of lightspeed c. Please send bug reports and comments to staff@newton.umsl.edu.

Caution: This applet requires a Java Development Kit 1.1 compatible browser. One reason is that version 1.1 of Java allows much cooler stuff to be done, even though the applet as written doesn't take advantage of it yet. The only browser I know of which supports JDK1.1 today is HotJava, available free from Sun if you register as a Java developer, but both Netscape and Internet Explorer are expected to offer compatible browsers soon. Here is what the applet looks like in a compatible browser. In the meantime, our non-Java solver (which accepts all Galilean-kinematic input combinations, in meters and seconds) should work for most anyone.


This is where the applet would be, if your browser wasn't completely ignoring the <APPLET> tag!

  • Version release date: 12 Apr 2005.
  • At UM-StLouis see also: anyspeed, cme, i-fzx, progs, si-river, stei-lab, turnovers, & wuzzlers.
  • For source, cite URL at http://www.umsl.edu/~fraundor/java/acalculator.html
  • Number of visits here since 02 Oct 97 is [broken counter].
  • This stuff is Copyright (1970-97) by Phil Fraundorf
  • Dept. of Physics & Astronomy, U. Missouri-StL, St. Louis MO 63121-4499
  • Send comments/suggestions to pfraundorf@umsl.edu