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When stared at for a few seconds, the image would be emblazoned on the back of the eye (retina) and remain for the same period.
The viewer would then turn to the next page which was white, and would see the ghoulish character dance on the page as the eye moved. https://t.co/OBwmOQMg9Y
1669
ROBERT BOYLE (1627-1691)
Boyle (below) describes a "portable darkened room" in his 'Of the Systematicall and Cosmical Qualities of Things’ (Boyle, R., Oxford, England, 1669).
This was a portable box camera which he constructed, and then described.
This 19th century ‘Tunnel Book’ comes in a box with the peep hole in the lid. It contained the same system of optical views:
Left; the Channel Tunnel (1848)
Right; the ascent of Mont-Blanc https://t.co/c67VBNAoWU
‘Panoramacopia’ soon came to refer to varied art that used a succession of striking visual effects to entertain an audience.
Pictured: 4 more of the 18 plates of T.T. Dale's Panoramacopia from 1824.
Department of Rare Books & Manuscripts, Yale Center for British Art. https://t.co/jNRZErYlit
Below, a common flea (r) seen & drawn by Ledermüller in 1760 with his ‘Camera Obscura’ with ‘solar microscope’ lens (l).
What a wonderful discovery the Camera Obscura was in leading the way to tremendous imagery bringing us closer to the Cinematography we enjoy today. https://t.co/9B46f0yijp
Below, a fly as seen & drawn by Ledermüller in 1760, with his ‘Camera Obscuras’ equipped with a ‘solar microscope’.
The close up shows how detailed the Camera Obscura allowed.
He published these images this same year in his book ‘Microscopic Delights of The Mind and Eye’. https://t.co/dcwVDcAfAT
1858
CHARLES CHEVALIER (1804-1859)
Chevalier made diaphragms for Daguerre. They were of extremely thin move-able blades of metal, secured within the lens so as to allow the aperture to open or close. @IrisCalculator
In 1849, the apparatus used in the 3rd act of the stage play ‘The Prophet’ (Le prophète, Paris 16 April), to imitate the rising sun, consisted of an arc lamp fitted with a large ‘parabolic reflector’ (below).
Engraving below of Act IV, scene 2 in ‘L'Illustration’ 24 April 1849. https://t.co/qmtAiCgMb5
In the first act of the opera ‘Moïse et Pharaon’ in 1860, electricity was first applied to produce a rainbow.
A lantern equipped w/ an electric arc is placed on a scaffolding of suitable height, 5 meters from the curtain and perpendicular to the canvas which represents the sky. https://t.co/nX9A4D56wp
In 1611, astronomer Johannes Kepler (above) described the basic notion of the ‘Camera Lucida’.
In 1806, William Hyde Wollaston (below) invented an instrument with a four-sided prism, almost 200 years later. https://t.co/OLiy3RAljp