Text written in Basque and translated automatically by Elia without any subsequent editing. SEE ORIGINAL

How our lighthouses create light and since when

Mentxu Aiertza has come to us to make the section of lighthouses of the Basque coast. On this occasion we have analyzed how the lighthouses create light and project it forward, and we have told how all this has evolved in our lighthouses. For example, the difference between the electrification years of some headlights and others is striking.