Lighthouse architecture

🌊 What two main points does the second class of considerations focus on for lighthouse towers in exposed situations?
Difficulty: Easy
🧱 According to the text, what is one reason why Smeaton's analogy of a tree is not useful when discussing lighthouse architecture?
Difficulty: Medium
💡 What do the experiments with the Marine Dynamometer made at Skerryvore Rock reveal about the force of waves?
Difficulty: Hard