The Eclipse Tree.

If you look closely at the shadow of this tree, you will see something quite unusual: it is composed of hundreds of images of a partially eclipsed Sun . Early today , trees across North America will be casting similar shadows as a partial eclipse of the Sun takes place. In a partial eclipse , the Moon does not cover the entire Sun . The above effect is created by small spaces between leaves and branches acting as pinhole lenses . Looking at shadows involving eclipse light is relatively safe - looking directly at the Sun , even during an eclipse, is dangerous and proper precautions should be taken. The above picture was taken in 1994 on the campus of Northwestern University .