In the early nineteenth century, lighthouses in the United States were considered inferior to those in France and England. American mariners complained about the quality of the light emanating from local lighthouse towers, arguing that European lighthouses were more effective at shining bright be

Have you ever wondered how the lights in lighthouses are so bright? In this activity, students will examine a Fresnel lens to develop an understanding of how some lighthouse lenses work. They will then apply their knowledge of the lighthouse lens technology to imagine a new invention using a ligh

For hundreds of years, seacoasts, rivers, lakes, and canals have had a big impact on the ways America has changed as a country.  By using this OurStory module from the Smithsonian's National Museum of American History, children and adults can enjoy exploring lighthouses and the maritime hist