Free space may refer to: A perfect vacuum, that is a space free of all matter In electrical engineering, free space means air (as opposed to a material, transmission line, fiber-optic cable, etc.): Free-space optical communication is communication by shining light through air Free-space path loss, the spreading-out of light as it travels through 3D space Free-space display is a 3D display projected into the air, often with the help of mist Autonomous free space, community centers in which non-authoritarians enact principles of mutual aid Social centre the free shared space in a community Descent: FreeSpace – The Great War, a space combat simulation computer game The area of a data storage device (for example, a computer disk drive) that is still available for more data storage , the subset of a configuration space where a robot will not collide with obstacles
See also Deep Space (disambiguation)