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Early Lighthouse Materials
100
Early Lighthouse Materials
What materials were employed in the original lighthouses, before the use of oil lamps and electricity? 🔥
Difficulty: Easy
Coal and wood fires[1]
Argand lamps
Electric arc lights
Mineral oil
Which of these materials was used by William Hutchinson to create reflectors in the Portpatrick lighthouse? 🪞
Difficulty: Medium
Mirrors of perfect polish
Small pieces of ordinary looking-glass[1]
Cylindrical wicks
Mirrors of mirrors of perfect polish and a better shape
Which of these materials was used in the construction of the Tour d'Ordre at Boulogne? 🧱
Difficulty: Hard
Molten lead
Gray and yellow stones and tile-red bricks[1]
Tallow
Silver and concrete
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