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Gravitational Lensing

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. When light passes through the cluster from an object lying behind it, the light is bent and focused to produce an image or images of the source. The image may be magnified, distorted, or multiplied by the lens, depending upon the position of the source with respect to the lensing mass. The characteristics of the gravitationally lensed image depend upon the alignment of the observer, the lens and the background object. If the alignment is perfect, the resulting image is an Einstein Ring. With this program, one can draw images to see the effect of gravitational lensing. You can easily test the effects of several parameters by changing them and redrawing the image.

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Orbit Xplorer

Educational orbit and gravitation simulator for high school, college and beginning university physics and astronomy. Input mass, radius, coordinates and velocity components of 2 to 10 bodies manually or by dragging and dropping predefined bodies. Then watch how the orbits evolve under the mutual gravitaional attractions. Save and print the simulation. Great for 'lab exercises' in gravitational physics or for verifying numerical answers to textbook problems. Includes 29 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.

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Khi 3

A super Computer! Math, finances, statistics, combinative, factorials, calculations of dates, curves y=f(x), series, units conversions, calendars conversions (Gregorian, Julien, republican), Triangle interactive geometry, Pi calculation (10.000 digits) and statistical approach, Fourier series, Taylor developments, functions : Gamma, Bessel, Bernoulli, Fisher, prime numbers, fractionals, factorization, calculations on complex numbers, equations solver, famous curves and surfaces, quadrics, orthodromy and loxodromy, currencies rates, amounts in letters, Romans. Elements, Molar masses calculation, physical and chemical constants. 40 usual electric diagrams. Conversions of bases(2 to 36), ASCII/Unicode. Nice Divx Bitrate Calculator (frames, audio, tracks, support, etc). Astronomy: Geocentric and heliocentric planetary co-ordinates. Simulation 3d of the Solar system. Calculation of positions of Mars, Jupiter and Saturne satellites, with 3d animations. Ballade in stars. Equatorial planets Projection. Games: Gravitation (shootings, undersailors), chaotic pendulum, Satellites, Game of Life, Invaders, Tetris, Biorythms, Billiards simulation (French, Indian), Tic TaC Toe, Quotations, Hex, French Geography, Lunar landing...

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Universal Scientific Calculator

A Super Calculator, many maths functions, charts, 20 educational and ludic games. Math Functions: sin, cos, tan, asin, acos, atan, x2, 1/x, root, %, log, exp, pi, hyperbolic x^y, secant, asec, cotang. Factorization. Financal: expiries, capital, rate, currencies... Stats: Memorize points, average and regression, factorial, Anm, Cnm Dates: day of a date. Complexes: operations on complex numbers (add, powers, products...). Memorize all steps, and possibility to go back. Curves: Chart between two X for functions y=f(x). Calculations in radians and degrees. Conversions of units (weight, distances, powers, temperatures, etc...). Amounts in letters... Planets ephemerids, Jupiter Satellites, Triangle Geometry (Euler and Simson lines, ...) Games on Gravitation. Fourier Series... Pi decimals (10000), Chaotic Pendule simulation, Solar System Simulation, other games (invaders, blocs, balls, billard, ...). Calendars conversions, Periodic Table of Elements and Molar Mass Calculation, Statistics, Taylor expansion, Bernoulli, Gamma, Euler functions, Prime numbers...

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GL Gravitation

Take it easy and relax with GL Gravitation. Really never look alike patterns. Amazing structure formations and deformations, seems a living being. Get ready for this journey into another dimension... enjoy the very random effects and listen good music.

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Batch It! Ultra

Batch It! Ultra is an automated Batch Imaging Editor which allows you to resize, rename, rotate, slice, create thumbnail galleries, add captions, acquire images from scanner and more. It Load JPEG, BMP, TIFF, PCX, PNG, TGA, PBM, PGM, PPM, GIF, VDA, ICB, VST, PIX, WMF, FAX, PSD, PDD, PSP, CUT and PCD and Save in JPEG, BMP, TIFF, PCX, PNG, TGA, PBM, PGM, PPM and GIF format.

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The Lotto King

The Lotto King is your winning tool for playing and winning the lottery. This dynamite little program allows you to set and box a range of numbers, from a low of six to all forty-nine. And you can save your favorite numbers for future reference. Features include BankRolling, European System Play, Customized Six and ten Sets of Favorites.

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Aeonserv helps you discover the pleasures of running your own server along with a portal. Aeonserv makes it easier than most have imagined and better than most have tried. Aeonserv runs flawlessly on the NT/2000/XP/2003 operating systems and has a simple graphical installer. It features individual component uninstall, full uninstall and restoration abilities. (in case you like to experiment or mess things up). Download your copy now!

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Copy DVD to CD-R

Copy DVD is a DVD conversion application, which converts DVD to VCD/SVCD/AVI. It also burn VCD/SVCD directly.. Now there is no need to keep DVD, you can view the movie in VCD player. The application will automatically burn more than one VCDs. . You can view the status of conversion any time and stop it also. So you can copy small part from begining by pressing Stop. You can make various settings from Settings dialog.

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RegSpy is a windows registry utility that spies changes made by specified program. RegSpy will help you to track all little changes in your system registry made by other programs. With RegSpy, you can: Quick make Snapshot and Rollback of registry

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Battle Painters

Battle Painters is a simple multiplayer action game in which the person who paints the most percentage of the playing field in their color wins the game. You will play against three other players controlled by either the computer or human opponents.

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123 Flash Chat Server Software

Full-featured,high-performance 123FlashChat can fully integrate database of Postnuke, phpbb, phpnuke, vbulletin- all forums or websites. It has customizable interface. It support moderated chat, AD banner& low port flash chat. It's java chat server& stunning flash client with easy installation on all major OS. It's a fast, easy,affordable real-time chat. It allows you to organize chat-events, collaborative work sessions or online meetings stably.

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