This involves tapping both freshwater and seawater at the mouths of Norway’s many rivers and fjords, and diverting it to tanks on either side of a semi-permeable membrane.

This involves tapping both freshwater and seawater at the mouths of Norway's many rivers and fjords, and diverting it to tanks on either side of a semi-permeable membrane.

The browser is sort of tapping the server on the shoulder and asking it to execute a method on one of the server-side managed beans and return the result.