Horsepower treadmills during the 19th century were not uncommon. Many were used to power a variety of pumps, presses, saws, and tools on farms in remote areas where electricity or the gasoline engine was not available.
The LED lights embedded in this chart represent the lighthouses around Narragansett Bay.
The LEDs blink at the same rate as the actual lights.
This chart was donated by Carl Welshman of Harbor Lights Inc.
An interactive display showing the locations of Rhode Island Lighthouses. When a button is pressed a corresponding light on the map will indicate the location of the selected lighthouse.
The current display was built by Varajoun Karentz to replaceā¦