[19] The dovetailing function served to Increase the structural security, Even though Smeaton also had to taper the thickness of your tower toward the top, for which he curved the tower inwards on a gentle gradient. This profile experienced the included advantage of allowing a number of the Vitality of the waves to dissipate on affect With all the

Stevenson worked with the Northern Lighthouse Board for just about fifty a long time[22] throughout which era he designed and oversaw the development and later on enhancement of diverse lighthouses. He innovated in the selection of sunshine resources, mountings, reflector style and design, the use of Fresnel lenses, As well as in rotation and shutt