underwater photography

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Los Angeles Police Department wanted flyer on Elizabeth Short, aka the "Black Dahlia," who was brutally murdered in January 1947. The FBI supported the Los Angeles Police Department in the case, including by identifying Short through her fingerprints that

America’s 5 Most Notorious Cold Cases (Including One You May Have Thought Was Already Solved)

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Why Do We Eat Turkey on Thanksgiving?

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10 Greatest Baseball Players of All Time

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Flags That Look Alike

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12 Novels Considered the “Greatest Book Ever Written”

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Why Is Thanksgiving in the U.S. Celebrated on a Thursday?

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8 Unusual Punishments Inflicted on Women Throughout History

underwater photography

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halogen lamps

In halogen lamp
…also used in automobile headlights, underwater photography, and residential lighting.
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technology and techniques

In technology of photography: Underwater photography
Underwater photography requires either special watertight cameras or pressure-resistant housings for normal cameras. In both cases camera functions are controlled through pressure-tight glands. A flat glass or plastic window is usually in front of the camera lens. The red and yellow absorption of…
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