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Displayed Trail
As objects move through a simulation, they create a visible trail in 3D space showing where they have been. This trail fades with time, such that only the more recent positions of the object are -
Momentum Conservation
One of the fundamental laws of the universe that any classical physics simulator, including Universe Sandbox, must follow in order to be able to reproduce realistic motions is the conservation of momentum. Momentum cannot be -
Add Tool
The Add Tool allows the user to add a new object to the simulation. The Add button is located in the Tools menu. When clicked, the Add Tool menu will appear, displaying a list of -
Radius
The Radius of an object is the distance from its center to its surface. Most objects in Universe Sandbox are represented as spheres, so the Radius property serves as a simple representation of an object -
Number of Atmosphere Layers
An object's Infrared Emissivity represents how transparent the atmosphere is to infrared radiation, and has a maximum value of 1, indicating a completely opaque atmospheres. But some atmospheres, like Venus', are so thick that -
Infrared Emissivity
The Infrared Emissivity of an object is a measure of how efficiently the top layer of the object's atmosphere will emit infrared radiation. An object with an emissivity of one is a perfect blackbody -
Simulation Speed
The Simulation Speed is a simulation setting representing how much simulation time passes every real-time second. For example, if the Simulation Speed is set to one month per second, then a month passes in -
Surface vs Sea Level
The Surface vs Sea Level setting determines which temperature map will be used to calculate the Avg Temperature, Min Temperature, and Max Temperature properties in the object's properties panel: the Surface Temperature or the -
Tidal Heating
One of the effects that Universe Sandbox uses to calculate the temperature of an object is tidal heating, which is produced by the internal friction within an object as it is deformed by tidal forces -
Star
A Star in Universe Sandbox is a simulated object representing an actual star, a roughly spherical ball of plasma held in shape by the competing forces of gravity and internal pressures. Universe Sandbox also uses -
Friction Fragmentation
When an explosion occurs near an object, the material from the exploded object will flow past the object, causing friction against the object's surface. This friction may break off pieces of the object, creating -
Orbital Parent
The Orbital Parent of an object is the object in the simulation that the first object orbits. The Orbital Parent will usually be the object's Strongest Attractor, unless the object is more massive than -
Gravitational Lens Appearance
The Gravitational Lens property of a Black Hole object determines the source of the object's color. The property has two options: Default and Custom. When the Gravitational Lens is set to Custom, the color -
Energy Absorption Rate
The Energy Absorption Rate represents the total rate at which energy is added to an object from sources in the simulation, such as stars or tidal friction. This property is used to calculate the change -
Magnetosphere Size
The Magnetosphere Size property represents the size of an object's magnetosphere, the region of space where particles will be affected by the object's magnetic field. The size of the magnetosphere, Rmag, sometimes called -
Distance
The Distance of an object is the difference between the object's position and some reference point, defined by the Relative to property. In terms of vector mathematics, the Distance is the magnitude of the -
Fragmentation
Whenever collision, Roche, or friction fragmentation is triggered, Fragment objects are produced. The number of fragments created is automatically calculated by Universe Sandbox based on performance limitations. The location, mass, and velocity of each fragment -
Supernova Heating
One of the sources of heat energy that can change the temperature of an object is heat received from a recent supernova in the simulation. This energy is produced by the supernova explosion and radiated -
Energy Radiation Rate
The Energy Radiation Rate represents the total rate at which an object radiates heat energy out into space.. This property is used to calculate the change in the object's Average Temperature or Surface Temperature -
Stellar Heating
One of the sources of heat energy that can change the temperature of an object is heat received from stars in the simulation. This stellar energy is produced inside the star and radiated in all -
Average Temperature
The Average Temperature of an object represents the average temperature on the surface of the object. For Planetary Bodies, the Average Temperature is calculated by averaging across the Temperature map of the object's surface -
Tools Menu
This menu displays a large number of actions that affect the simulation. The menu can be opened by clicking the arrow in the upper right of the Tools menu in the bottom bar. -
Materials
Most objects in Universe Sandbox have a simulated composition, a list of materials that make up the object and their relative amounts. The composition of an object will affect its temperature, appearance, and other simulated -
Age
The Age of an object is the cumulative time since it formed. Objects with a known age listed in the Universe Sandbox database (such as the Earth or Sun) will be created with the known -
Camera
The user views the simulation through a virtual camera. This camera can be controlled by the user to move around the simulation, zoom in and out, and change the angle at which the simulation is
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Terraria Wiki
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The Terraria Wiki is a comprehensive resource containing information about all versions of Re-Logic's action-adventure sandbox game, Terraria.