In the pitch-black night, a thread of light slowly appeared on the horizon, reflecting shimmering patterns on the waves; it was the dawn wandering and drifting across the ocean, illuminating the path for sailors returning home. Before navigation systems existed, those who went to sea relied on lighthouses to recognize each coastline. By the frequency of a lighthouse's flashing, sailors knew land was nearby, and home was not far away. With a glance, they could tell the direction of home. The ligh...show more