All of these programs were built with LiveCode. Portions (c) 2000-2014 RunRev Ltd, All Rights Reserved Worldwide.
Note: All of the Mac software has been updated to run under the latest MacOS (10.9.x - 11.x). When you run the downloaded installer package, the program should appear in Applications.
Stepwising - Check out Kepler's laws of planetary motion, search for solutions to the 3-body problem, or try to drive a rocket powered car around a frictionless circular track of ice. (upper school level) Version for iPad is available again.
Celestial Dances - This app invites you to explore the relative motions of our solar system's planets, their moons, and six exoplanet systems. It is based on ideas presented in "A Little Book of Coincidence" by John Martineau. Are the amazing patterns created by these orbiting bodies just a coincidence, or is something more than that going on? Take a look and see what you think. Be sure to check out the special relationship between the Earth and Venus, and the resonances of HD 110067's exoplanets. Updated 12/19/2023. Mac version now allows you to create your own homemade solar system 1/18/2024.
Variable Max/Min Predictions - Predicted dates of LPV maxima and minima, and a search function to find variables that are within 30 days of maximum on a given date. Based on an extrapolation of 2018 data from the AAVSO Bulletin. Latest version includes predictions for 2020-2022.