This physical 3D Sankey diagram shows complex energy flows and was created in the 70s by the Center for Strategic & International Studies (CSIS). Little information is available about it. It seems to be composed of five layers of transparent sheet, with four additional layers running perpendicularly. Physical size unknown. Source: Energy Education References Wiki. Energy Flow Diagrams 1949-2009.
This physical 3D Sankey diagram shows complex energy flows and was created in the 70s by the Center for Strategic & International Studies (CSIS). Little information is available about it. It seems to be composed of five layers of transparent sheet, with four additional layers running perpendicularly. Physical size unknown. Source: Energy Education References Wiki. Energy Flow Diagrams 1949-2009.