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Modern underwater video lights are now relatively small, have run times of 45–60 minutes and output 600–8000 lumens. These LED lights are powered by Lithium-ion batteries and usually have a 5600 K (daylight) color temperature. [16]
Water clarity governs the health of underwater ecosystems because it impacts the amount of light reaching the plants and animals living underwater. For plants, light is needed for photosynthesis. The clarity of the underwater environment determines the depth ranges where aquatic plants can live.
One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.
Scientists thought that Lake Enigma was frozen from top to bottom. Then they discovered that water—and mysterious lifeforms—existed 11 meters below the surface.
Today's NYT Connections puzzle for Sunday, December 15, 2024The New York Times
The Justice Department said the violations were driven by company-mandated performance metrics that led to red flags being ignored, and that in some cases patients died of overdoses shortly after ...
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