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World of Engineering
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The most fun way to learn something new everyday.
参加 August 2015
68 フォロー中    3.5M ファン
The first surviving photograph, taken by Nicephore Niepce around 1826, required an approximately 8-hour exposure in full daylight. Within 60 years, photographic technology had improved so dramatically that cameras could freeze motion at 1/1000th of a second -- a 30-million-fold improvement in sensitivity achieved through chemistry, not optics.
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