Editing Density

The [https://en.wikipedia.org/wiki/Density Density] of an object is its mass per unit volume. All objects in Universe Sandbox are assumed to have uniform density.

==Property Details==

===Location===

The Density property of an object can be found near the top of the [[Overview Tab|Overview]] panel in the object's property panel. If the object has a [[Composition Tab|Composition]] tab, the Density will also be listed under the Cumulative Properties category in that tab.

The Density of an object is also displayed in its mini-info panel. 

===Units===

Density can be viewed and edited using the following units: 

* Grams per cubic centimeter (g/cm<sup>3</sup>) = 1000 kg/m<sup>3</sup>
* Kilograms per cubic meter (kg/m<sup>3</sup>) is the [https://en.wikipedia.org/wiki/International_System_of_Units SI] base unit for density
* Hydrogen molecules per cubic centimeters (H<sub>2</sub>/cm<sup>3</sup>) = 1.67×10<sup>-24</sup> kg/m<sup>3</sup>

==Simulation Effect==

===Mass and Radius===

Objects in Universe Sandbox are simulated as spheres of uniform density, so the density of an object, ρ, is related to its [[radius]], ''R'', and [[mass]], M, by
:<math>M = \frac{4}{3}\pi R^3 \rho.</math>

[[Category:Physics]]