Orbit Xplorer 2.2
Great for `lab exercises` in gravitational physics or for verifying numerical answers to textbook problems. Includes 30 introductory to advanced premade simulations with activities page in html-format. Simulations include elliptical satellite orbits, Kepler`s laws, double star, geocentric and heliocentric world view, Lagrange points, gravity assist, Hohmann orbit, extrasolar planet, inner solar system. Uses actual pictures of planets.
Plot orbits in a plane or in 3D. View time, distances, speeds, accelerations, energies and acceleration vectors as they change. Adjust the simulation speed to fit your computer. Zoom and change parameters during the simulation. Run up to four simultaneous simulations.
Tutorial and context-sensitive help included.
The GSA Image Analyser is a program to analyse 2D Images of any kind. It can recognize and count objects in an image or also calculate the distance areas in it. The images can be imported from many sources (file, scanner, microscope, cam).
Scientific Calculator Precision 90 for scientists, engineers, teachers, and students. Calculates mathematical formulas of any length and complexity.
Electronic analogical & digital simulation. Schema capture, simulator, results graphical editing, optimization. Native models of transformers, diodes, transistors, delay lines, filters, stimulus, gates, flip-flop, display. Library of components.
Scientific Calculator Precision 81 for scientists, engineers, teachers, and students. Calculates mathematical formulas of any length and complexity.
A program to search for eclipses (lunar, solar, total, annular and umbral), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in four lunar calendars.

