The Lighthouse of Alexandria: One of the Seven Wonders of the Ancient World, 2,000 Years Ago

Two thousand years ago, the waters off Alexandria were shallow and riddled with reefs, causing ships to wreck every night. The engineers decided to raise a fire high into the sky and built a stone tower over 100 meters tall. However, the light scattered in all directions, losing its power, and during the day, it was buried by sunlight and invisible. So, they flipped the concept. Instead of intensifying the fire, they placed a large, polished bronze mirror behind the flames to focus the light and shoot it in one direction. During the day, they used this mirror to reflect sunlight and send signals, and ancient records say the light was visible from 50 kilometers away. This tower, which protected the sea with its fire at night and sunlight during the day, is the Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World.