Supertubes, Jeffreyâs Bay, South Africa. Known to many surfers as âJ Bay,â this is one of the most famous surfing destinations of the world located in the Eastern Cape province of South Africa.
The Eddystone Lighthouse is on the dangerous Eddystone Rocks, 9 statute miles (14 km) south of Rame Head, England, United Kingdom.While Rame Head is in Cornwall, the rocks are in Devon and composed of Precambrian gneiss. The current structure is the fourth to be built on the site.he tower is 49 metres (161 ft) high, and its white light flashes twice every 10 seconds. The light is visible to 22 nautical miles (41 km), and is supplemented by a foghorn of 3 blasts every 62 seconds.
Their eyes are 100 feet above the water. Using the formula above, the horizon appears to be 12.3 miles away. Square Root of 100 = 10 10 x 1.23 miles = 12.3 miles. Conversely, a lighthouse light 100 feet above the water would be visible from 12.3 miles out to sea by a viewer at water level. But unless the viewer is in a very small boat they are up above water level, and the higher above water level the observer is, the farther away he would be able to see a light.