The Chinese writer and philosopher mentions the inverted image that appears when light passes through a small hole.
The same observation was commented upon by Aristotle.
Yu Chao-Lung uses model pagodas to show pinhole images on a screen.
Pinhole images are used to observe the eclipse of the sun.
A pinhole perspective is used to understand the vanishing point in painting.
Leonardo da Vinci provides the first detailed description of the pinhole formation.
Observation of solar projections from a pinhole lead to the correction of the Julian calendar to the Gregorian calendar.
Pinhole projections are used as an aid to drawing. Camera Obscura
Pinhole photography using dry plates.
Young photographers start experimenting with pinhole photography.
The art establishment becomes interested in pinhole images.
Pinhole interest groups are started to exchange ideas.
The world wide web leads to widen the interest in pinhole photography. Many art galleries are now having Pinhole Exhibitions.
A yahoo search under "Pinhole Photography" produces 35,000 hits