1th paragraph
The precursor of the modern camera,
the camera obscura __________ a darkened enclosure
into which __________
through a lens
in a small hole.
The image of the illuminated area
outside the enclusure
_________ upside down
if by magic onto a surface
in the darkened enclosure.
This technique
__________
as long ago
as the fifth century B. C. in China.
Aristotle also_____________
with it
in the fourth centruy B. C.,
and Leonardo da Vinci __________
it
in his notebooks in 1490.
In 1558
Giovanni Battista Della Porta
___________
in his twenty-volume work
Magia naturalis(meaning"natural magic") instructions
for ________ a convex lens
to _________ the quality of the image
________ against a canvas or panel
in the darkened area
where its outlines ____________
Later,
portable camera obscuras
____________
with interior mirrors and drawing tables
on which the artist _____________ the image.
For the artist,
this technique
_________
forms and linear perspective
to __________ precisely
as they ____________
from a single viewpoint.
Mirros were also _________
to __________ the projected images
to their original positions.
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