Look at the white line. Can you follow it from one end to the other with your eyes?
Ask:This photograph was made by moving a light in front of a camera set to keep its shutter open longer than normal. Do you think the light was moving fast or slow? Why?
Move:Move your arm in the same way the white line travels through the photograph. Can you trace the line without touching it?
Nathan Lerner
Light Drawing with Smoke #1, no date
Silver gelatin print
Gift of Kiyoko Lerner
Silver gelatin prints are photographs developed on paper with a coating of very tiny silver pieces mixed in gelatin.