Why did I love this book?
Fresnel lenses, invented by Frenchman Augustin Fresnel, are the crown jewels of lighthouse illumination. They not only greatly increased the intensity of the light, as compared with earlier forms of lighting, but also became one of the most important and strikingly beautiful inventions of the nineteenth century. Levitt’s luminous prose and great skill at storytelling makes this a fascinating and compelling read. It will make you look at lighthouses and Fresnel lenses with a well-deserved measure of awe.