Question

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who discovered that iodized silver plates could produce direct positive images?

discovered that iodized silver plates could produce direct positive images.

Explanation:

Identify the historical photographic invention

Louis Daguerre discovered that iodized silver plates exposed to light and developed with mercury vapor could produce direct positive images, a process known as the daguerreotype.

Answer:

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Who discovered that iodized silver plates could produce direct positive images?

<blank>Louis Daguerre</blank> discovered that iodized silver plates could produce direct positive images.