ACERCA DE PERPETUAL MARBLE MACHINE KINETIC

Acerca de Perpetual Marble Machine Kinetic

"I bought this for my wife's birthday,she loves marbles and we look at the videos on U-Tube with the marble machines. This is a perfect miniature replica of these machines well suited for a table top and very high quality construction, highly recommend it." Marble Machine "Duality" - HandmadeThe law that entropy always increases – the second law

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