Question

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Louis-Jacques-Mandé Daguerre and Nicéphore Niépce invented the first successful photographs in the 1830s. Niépce's initial effort required eight hours of exposure time __
Daguerre's required only twenty or thirty minutes.

Answer 1

[AI-generated answer — Bot GPT 3.5]

Louis-Jacques-Mandé Daguerre and Nicéphore Niépce invented the first successful photographs in the 1830s. Niépce's initial effort required eight hours of exposure time; Daguerre's required only twenty or thirty minutes.