Relativity

Einstein's General Theory of Relativity demonstrates that a large mass can deform spacetime and bend the path of light. So, a very massive object, such as a cluster of galaxies can act as a gravitational lens. With this program, one can draw images to see the effect of gravitational Platforms: Windows

In cosmology, dark energy is a hypothetical form of energy which permeates all of space and has strong negative pressure. According to the theory of relativity, the effect of such a negative pressure is qualitatively similar to a force acting in opposition to gravity at large scales. Invoking... Platforms: Windows

Dark Solar System is a new 3D screensaver for Windows that shows all of the planets of our solar system, including Saturn's rings. It tells you more about dark matter and dark energy in our planetary system. In cosmology, dark energy is a hypothetical form of energy which permeates all of space... Platforms: Windows

Time::Warp is a Perl module to control over the flow of time. SYNOPSIS use Time::Warp qw(scale to time); to(time + 5); # 5 seconds ahead scale(2); # make time flow twice normal Our external experience unfolds in 3 1/2 dimensions (time has a dimensionality of 1/2). The Time::Warp module... Platforms: *nix

Circuit Aid contains a resistor circuit analysis tool that can build up to an 18 resistor series-parallel circuit. This tool will display voltage, amperage, and power used by every resistor in the circuit by means of mesh analysis. In addition, the program also contains a resistor color band... Platforms: Mac

ProjectileX allows the user to visually plot a trajectory of a projectile. Simply enter in initial velocity, theta, gravity, (and vertical and vertical landing positions optionally) to graph the projectile. After this, you will know the total distance, total time, time of height max, height max,... Platforms: Mac

TrigAid allows a student to quickly perform math and trigonometry related calculations with ease. The application has a geometry section, vectors, conics, matrices, axes rotation, linear equation, triangulator, sequences and much, much more. In addition, the application has a unit converter and a... Platforms: Mac

Number Press is the perfect solution for printshops, organizations, clubs or any type of business that need to number their documents. Ideal to number forms, raffles, NCR, Slips, Multiple-Up or anything that needs to be numbered. Choose any font, style, size or color Place up to 32 Numbers... Platforms: Mac

It provides management tools necessary for managing a continuous cycle of competitions that run on your site.Certain content types (chosen by an administrator) are selected for submission as competition entries. After the competitions close, and the voting phase begins, users vote on each other's... Platforms: BSD Solaris

In other words, using this module, you can assign the role "contributor" to a user in a group, and the user will only have the permissions of that role while he is in that particular group. This module does not affect other site-wide roles assigned to the user.InstallationUnpack in your modules... Platforms: Windows, Mac, *nix, PHP, BSD Solaris

Installation - Unpack in your modules folder (usually /sites/all/modules/) and enable under Administer > Site Building > Modules.  Requirements: - Drupal 5.x - Drupal Views Module - Drupal CCK Module - Drupal Image Field Module - Drupal ImageCache Module - Drupal Relativity module Platforms: Windows, Mac, *nix, PHP, BSD Solaris

This is very helpful if you have several fields that repeats in more than one content type. You may want to put these fields in one content type and make this content type the child of as many as you want parent content types using the Relativity module. Now all you have to do is to add this... Platforms: Windows, Mac, *nix, PHP, BSD Solaris

It provides management tools necessary for managing a continuous cycle of competitions that run on your site.Certain content types (chosen by an administrator) are selected for submission as competition entries. After the competitions close, and the voting phase begins, users vote on each other's... Platforms: BSD Solaris

Light Speed! is an OpenGL-based program which illustrates the effects of special relativity on the appearance of moving objects. When an object accelerates past a few million meters per second, these effects begin to grow noticeable, becoming more and more pronounced as the speed of light is... Platforms: *nix, C/C++, BSD

I am planning an extended world trip, so I am looking for co-maintainers or a new maintainer to help out. No upgrade path to Drupal 7 has been started yet. If no response to a request is given after a few weeks, guide the web masters here to confirm the request.This is a templating system for new... Platforms: PHP

The Particle Worldline model computes and displays the trajectory of a test particle in the vicinity of a black hole using Schwarzschild coordinates. It was created for the study of Einstein's theory of general relativity and the Schwarzschild metric. The model has input fields displaying the... Platforms: Mac

Astronomy is the science of celestial objects and phenomena that originate outside the Earth's atmosphere, such as stars, planets, comets, auroras, galaxies, and the cosmic background radiation. It is concerned with the formation and development of the universe, the evolution and physical and... Platforms: Mac