Abstract: Methods for enriching, separating, or enriching and separating isotopes and isotopologues, as well as other chemical species, contained in a supersonic beam are provided. In the methods, a supersonic beam having different isotopes, isotopologues, or other chemical species entrained therein and a beam comprising a matrix material converge on a surface. As the matrix material forms a solid matrix on the surface, heavier isotopes, isotopologues, and/or other chemical species become preferentially embedded in the matrix, while lighter isotopes, isotopologues, and/or other chemical species are preferentially scattered from the surface.

Abstract: Methods for enriching, separating, or enriching and separating isotopes and isotopologues, as well as other chemical species, contained in a supersonic beam are provided. In the methods, a supersonic beam having different isotopes, isotopologues, or other chemical species entrained therein and a beam comprising a matrix material converge on a surface. As the matrix material forms a solid matrix on the surface, heavier isotopes, isotopologues, and/or other chemical species become preferentially embedded in the matrix, while lighter isotopes, isotopologues, and/or other chemical species are preferentially scattered from the surface.

Abstract: A game has a pair parallel walls defining a space therebetween, at least one of the walls being transparent to permit viewing of the space from the exterior of the game, and a liquid-light seal around the space, with a liquid retained in the space by the seal. Buoyant balls immersed in the liquid include a ferrous material, and a retainer extends partially across a lower portion of the space for releasably retaining the balls. A magnet at the exterior of the space is manipulable for displacing the balls from beneath the retainer; and ball receptacles located above the retainer each have a downwardly facing ball reception opening dimensioned to receive the balls therein as the balls rise buoyantly through the space on release of the balls by the magnet.