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Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps. Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1] Compact fluorescent lighting with a compatible screw-in base is frequently used as a direct ...
A dive light is a light source carried by an underwater diver to illuminate the underwater environment. Scuba divers generally carry self-contained lights, but surface supplied divers may carry lights powered by cable supply . A dive light is routinely used during night dives and cave dives, when there is little or no natural light, but also ...
A fishing light attractor is a fishing aid that uses lights attached to structures above water or suspended underwater to attract fish and members of their food chain. Fish are typically most attracted to true-green light colors. [1] Light attractors work by taking advantage of phototactic behavior exhibited by many species of fish that are ...
History of underwater diving. 16th century Islamic painting of Alexander the Great lowered in a glass diving bell. 1849 illustration of various diving equipment. The history of underwater diving starts with freediving as a widespread means of hunting and gathering, both for food and other valuable resources such as pearls and coral.
A freshwater aquarium with plants and various tropical fish. An aquarium (pl.: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquatic reptiles, such as turtles, and aquatic plants.
Background. Sarah Mather, originally from Brooklyn, New York, is most known for her invention of the underwater telescope. Born Sarah Porter Stiman in 1796, she was married to Harlow Mather at age 23, in 1819. Several years later, in 1845, April 16 she received a patent for her innovation of the “submarine telescope and lamp”.
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