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  4. In the 1830s this Frenchman developed a new photo process that cut exposure time from 8 hours to less than 30 minutes

In the 1830s this Frenchman developed a new photo process that cut exposure time from 8 hours to less than 30 minutes

Since you have landed on this page then most probably you are looking for the In the 1830s this Frenchman developed a new photo process that cut exposure time from 8 hours to less than 30 minutes answer. This question was last seen on October 5 2021 Jeopardy TV Game Show.

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For more questions from this episode visit Jeopardy October 5 2021 Answers