Abstract: The invention proposes an apparatus for generating three-dimensional visual effects, characterised in that it comprises, in combination: a controlled smoke generator (10) comprising a synthetic smoke source and a means for directionally propelling the smoke produced by the generator in order to form a plume of smoke extending in a certain direction, and a controlled light generator (20), suitable for generating one or more light beams in the plume of smoke and in the direction in which it extends, the light beam or beams being essentially contained in said plume of smoke. Application in particular to the production of “lightsaber” visual effects, and more generally to varied three-dimensional light effects.

Abstract: The invention proposes an apparatus for generating three-dimensional visual effects, characterised in that it comprises, in combination: a controlled smoke generator (10) comprising a synthetic smoke source and a means for directionally propelling the smoke produced by the generator in order to form a plume of smoke extending in a certain direction, and a controlled light generator (20), suitable for generating one or more light beams in the plume of smoke and in the direction in which it extends, the light beam or beams being essentially contained in said plume of smoke. Application in particular to the production of “lightsaber” visual effects, and more generally to varied three-dimensional light effects.

Abstract: The process of the invention is a process for selective hydrogenation of a hydrocarbon feed containing hydrogen and C2+ hydrocarbons, characterized in that it comprises at least one step for separating a fraction of the hydrogen contained in the feed by means of a membrane (step a)) and a step for selective hydrogenation of the effluent from step a) in a reactive column (step b)).