Abstract: Disclosed is a three-dimensional display device, a system for creating a three-dimensional display, and a process of creating a three-dimensional display. The three-dimensional display device includes a rotatable portion and a plurality of light emitting elements connected to the rotatable portion. Rotation of the rotatable portion rotates the light emitting elements and displays a sequence of images corresponding with segmented image data as an illusion of a continuous three-dimensional image. The system includes an array arranged and disposed to gather segmented image data and a display arranged and disposed to display a sequence of images corresponding with the segmented image data. The displaying forms an illusion of a continuous three-dimensional image. The process includes gathering segmented image data and displaying a sequence of images corresponding with the segmented image data. The displaying forms an illusion of a continuous three-dimensional image.

Abstract: An elongate truss 10 comprises a framework 14 of spars 16, 18, 20, 22, 24, 26. The truss 10 is open on one aspect and has the transverse cross section of a regular trapezium. This enables identical trusses to be stacked up for storage or transporting an internested manner one on top of the other. In addition, lights 62 may be mounted inside the truss 10 and drapes 72 are hung from one side of the truss 10. A removable cross brace 42 may be provided for connection at the open aspect of the truss between lower longitudinal spars 18 to prevent splaying of the truss when under load. The brace 42 may be stored by attachment to intermediate cross chords 22. A stack 10' of trusses may be stored on a trolley 28 and easily manhandled. A substantial number of the trusses, when stacked, may be stored in a set volume.