Particle physics sandbox with n-body capabilities where the behaviour of the system is driven by each particle's gravity. Most simulation parameters are adjustable, like the gravity strength, the number of particles, the friction or the collision policy. Some of them can even be operated live during the simulation. Set your initial conditions and just watch the system evolve or intervene to decide the fate of the particles!Features:-Real n-body physics simulation, pure gravitational interactions between particles.-Create walls particles can't trespass. Watch them bounce off.-Allow or not physically realistic elastic collisions or mergers between particles.-Configurable particle colorus.-Configurable background image/colour.-Configurable gravity strength.-Configurable particle mass.-Configurable particle size.-Configurable friction.-Accelerometer support.-Repulsive forces.-Shoot particles of different sizes.-Repulsive particles.-Static particles.-Simulation area: screen or big area with panning and zooming.-Enable or disable the central black hole which exerts a neat attractive force towards the center.-Enable or disable particle trails (disable to improve performance).-Modify simulation velocity in real time.-Particle-Particle and Particle-Mesh simulation methods. Use first for accuracy, use second for performance.-Display grid densities as background in Particle-Mesh method.Check out the LIVE WALLPAPER version, it's free and it's also in the market! It will remain with the old version of the app by now.Contact me if you have suggestions for new features or found any bugs. 粒子物理学的沙箱与n体功能的行为的系统是由每个粒子的重力。大多数的仿真参数是可调的，如重力强度，粒子的数量，摩擦或碰撞策略。他们中的一些，甚至可以在仿真过程中实时操作。设置您的初始条件，只是看系统发展或干预决定命运的颗粒！特点：房地产正体物理模拟，纯粒子之间的引力相互作用。创建墙壁粒子不能擅闯。观看他们弹开。 - 允许或物理现实的弹性碰撞或颗粒之间的兼并。配置的粒子colorus。配置背景图像/颜色。配置重力实力。配置粒子的质量。可配置的颗粒大小。配置摩擦。 - 加速计的支持。排斥力。拍摄不同大小的颗粒。 - 丑恶颗粒。静电颗粒。仿真面积：屏幕或大面积的平移和缩放。启用或禁用向中心施加一个整洁的吸引力，中央黑洞。启用或禁用跟踪粒子（禁用以提高性能）。 - 修改实时模拟速度。其他粒子和颗粒网状仿真方法。第一次使用的准确性，使用第二个表现。显示网格密度为颗粒网状方法的背景。离开现场的墙纸版本，它是免费的，它也是在市场上！现在，它将保持与旧版本的应用程序。联系我，如果你有新功能的建议或发现任何错误。