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This set allows a marble to drop from a higher level and return to the track below . At the top, the marble enters a track stone with a central opening . From there it falls vertically through a stack of special height spacers with an…
Fallturm Bremen Picture: CuttyP, CC BY-SA 3.0 DE Der Fallturm Bremen ist ein 1990 in Bremen fertiggestellter Fallturm, der vom Zentrum für angewandte Raumfahrttechnologie und Mikrogravitation (ZARM) am Fachbereich Produktionstechnik der…
This set allows a marble to drop from a higher level and return to the track below . At the top, the marble enters a track stone with a central opening . From there it falls vertically through a stack of special height spacers with an…
