camera obscura

Known in antiquity, but
Giambattista della Porta described the camera obscura, in Magicae naturalis (or Natural Magivk by John Baptista Porta, a Neapolitaine), in 1589. In color, with movement and sound: a camera obscura with live actors being projected. Some scholars ay it is the first presentation of projected animated color images in a dark room with sound accompaniment. The idea was both simple and subtle: some comedians performed outside a room plunged into darkness and in whose wall a hole had been drilled and a set of lenses had been placed. The images of the comedians were thus projected, by bright sunlight, onto the opposite inner wall, and the representation was accompanied by music and various noises.
Werner Nekes claims the optical principle was known by Chinese Mohist mathematicians in 4th century BC.
Aristotle saw the effect during a solar eclipse while he stood beneath a big tree. Jason witnessed this same effect during an eclipse in the early 1990s.
An instrument for viewing the sun throughout thirteenth to sixteenth centuries.
Leonardo DaVinci compared it to the mechanical principles of the biological eyeball.
Can be made more complicated with different lens and mirror set-ups.

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