Sankey diagrams summarise all the energy transfers taking place in a process. Sankey diagrams are drawn to scale - the thicker the line or arrow, the greater the amount of energy involved. You may be ...

The thicker the line or arrow, the greater the amount of energy involved. Energy can be changed from one form to another but cannot be created or destroyed. The total amount of energy does not change.

THE rise of data visualisation in the digital age has revived interest in a style of chart called a Sankey diagram. These were initially made famous by Charles Joseph Minard's statistical graphic of ...