Today’s post is all about the fresnel lens.

The Fresnel Lens was developed by French physicist Augustin Fresnel.

You can read more about the fresnel lens in the book A Short Brght Flash by Theresa Levitt: A Short Bright Flash

This was my view of the first-order fresnel lens at Absecon lighthouse in Atlantic City, New Jersey on September 20, 2014.

And this was my capture of the fourth-order fresnel lens inside the tower room at Drum Point lighthouse in Solomons, Maryland on September 22, 2014.

Finally, from inside the museum beside Drum Point lighthouse, a section dedicated to lighthouses and the fresnel lens.