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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 reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the tropical coral reef environment. A reef aquarium requires appropriately intense lighting, turbulent water movement, and more stable water chemistry than fish-only marine ...
Thomas Research Products is a lighting manufacturer that is wholly owned by Hubbell Lighting Inc. [1] Based in Elgin, Illinois, the company designs, manufacturers and supplies energy-saving electronic lighting components and integrated light engine modules for luminaires.
A chase is an electrical application where strings of adjacent light bulbs cycle on and off frequently to give the illusion of lights moving along the string. With computerized lighting consoles, building chase sequences has become easier, while previously chases used mechanical means, such as a wheel with an electrified spindle which strikes electrical contacts for each circuit.
In a shark aquarium setup (preferably an oval-shaped tank for more active species), there should be much surface area (wide and long tanks with good gas exchange/more room for biological filtration and room for sharks to swim, glide, and turn with little constraint opposed to tall, thin tanks), fine substrate (coarse substrate can irritate the ...
The lighthouse was added to the National Register of Historic Places as Penfield Reef Lighthouse in 1990. [ 1 ] [ 12 ] In 2015, the Coast Guard executed a substantial rehabilitation project at the lighthouse, designed by architect Marsha Levy of the Coast Guard's Civil Engineering Unit Providence, to address the damage from Hurricane Sandy.
The Poe Reef Light is part of what became a complex of 14 reef lights in Michigan waters, which was intended to help ships navigate through and around the shoals and hazards of the Great Lakes. [16] It is also "part of a series of a significant offshore light construction projects being undertaken in the Straits area in the late 1920s."
The blacktip reef shark has also been known to become aggressive in the presence of bait, and may pose a threat while attempting to steal the catches of spear fishers. [3] The blacktip reef shark is a normal catch of coastal fisheries, such as those operating off Thailand and India, but is not targeted or considered commercially important. [9]
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