Florida experienced a partial eclipse of the sun on August 21, 2017. It is possible to view an eclipse by looking up with special glasses to protect your eyes. You can also look down to see the image of the sun projected through the leaves of a tree. The overlapping leaves and branches create tiny gaps that project an image of the sun on a sidewalk, much in the same way a pinhole camera creates an image. Normally, these images are round—the unobscured disk of the sun. But during an eclipse, a crescent caused by the moon covering the sun is projected. 

A sidewalk becomes a projection screen for hundreds of sun images. An eclipse is the only time when the usual round images of the sun are replaced by a myriad of crescent ones. Click on the images for a larger view.