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The camera obscura was known to the ancient Chinese, and was described by the Han Chinese polymath Shen Kuo in his scientific book Dream Pool Essays, published in the year 1088 C.E. Aristotle had discussed the basic principle behind it in his Problems, but Alhazen's work contained the first clear description of camera obscura.
During his two months abroad, Edison visited with scientist-photographer Étienne-Jules Marey, who had devised a "chronophotographic gun"—the first portable motion picture camera—which used a strip of flexible film designed to capture sequential images at 12 frames per second. [10]
The effect exaggerates the contrast between edges of the slightly differing shades of gray as soon as they separate, by triggering edge-detection in the human visual system. [ 8 ] [ 32 ] More clearly than anyone before or since, Mach made the distinction between what he called physiological (specifically visual ) and geometrical spaces.
View from the Window at Le Gras 1826 or 1827, believed to be the earliest surviving camera photograph. [1] Original (left) and colorized reoriented enhancement (right).. The history of photography began with the discovery of two critical principles: The first is camera obscura image projection; the second is the discovery that some substances are visibly altered by exposure to light. [2]
During his brief visit of England in 1921, he managed to study how sound travels in the Whispring Gallery of the dome of St Paul's Cathedral in London that produces unusual sound effects. [52] [53] His work on acoustics was an important prelude, both experimentally and conceptually, to his later works on optics and quantum mechanics. [54]
The 35mm camera was essentially finalised by the fall of 1892. The completed version of the 35mm Kinetoscope was unveiled at the Brooklyn Institute of Arts and Sciences on 9 May 1893. [ 7 ] It was a peep show machine showing a continuous loop of film, lit by a small lamp, viewed individually through the window of a cabinet housing its components.
Decades ago, explorer Bradford Washburn hit bad weather and abandoned his camera gear on the remote Walsh Glacier. A pro skier set out to find it. A camera from a 1937 explorer was discovered on a ...
Hans Jenny (16 August 1904 in Basel – 23 June 1972 in Dornach) [1] was a Swiss physician and natural scientist who coined the term "cymatics" to describe acoustic effects of sound wave phenomena. Life and career