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2. Parabolic aluminized reflector - Wikipedia

   en.wikipedia.org/wiki/Parabolic_aluminized_reflector

   LED retrofit equipment that match PAR lamp dimensions is made by some manufacturers. As with the case of LED MR lamps, LED PAR lamps generally use an array of individual LED elements that are unsuitable for reflector operation. Nevertheless, some degree of beam control can be obtained with aperture or lens, and LED PAR 38 replacements with a 40 ...

3. List of shipwrecks of the Isles of Scilly (19th century)

   en.wikipedia.org/wiki/List_of_shipwrecks_of_the...

   24 June — iron barque Il Primo ( Spain) of Bilbao carrying sugar for Greenock from Havana hit the Seven Stones reef and quickly sank with the loss of all the crew bar one. [ 9 ] 7 July — the 387 ton barque Belle of the South hit the Perconger Ledge off St Agnes in a heavy rain squall.

4. Runnel Stone - Wikipedia

   en.wikipedia.org/wiki/Runnel_Stone

   A buoy currently marks the position of the Runnel Stone. Until May 2012 it was topped with a flashing light, a bell which peals with the movement of the waves and was also fitted with a whistle set in a tube, which emitted a moaning sound when there was a good swell running.

5. Marine aquarium - Wikipedia

   en.wikipedia.org/wiki/Marine_aquarium

   Reef-keeping enthusiasts have begun to build their own LED light fixtures as well. Debate over their effectiveness towards coral is still inconclusive, particularly with respect to their ability to give off UV radiation, critical to obtaining a vibrant array of colors that most people interested in LED lighting are looking for. [19]

6. Okinotorishima - Wikipedia

   en.wikipedia.org/wiki/Okinotorishima

   The rocks are in the western part of a lagoon surrounded by a submerged coral reef, over which the waves break, and that extends 4.5 km (2.8 mi) east-west and 1.7 km (1.1 mi) north-south, with an area of roughly 5 km 2 within the rim of the reef. The lagoon is 3 to 4.6 meters deep, but there are numerous coral heads of lesser depths throughout ...

7. DSV Limiting Factor - Wikipedia

   en.wikipedia.org/wiki/DSV_Limiting_Factor

   The lower viewport and CTD probe Detail view of the dive weight release mechanism and one of the LED light panels The forward and downward view through the three ultra-wide angle acrylic viewports is unobstructed by structure or appendages, and illuminated by ten externally mounted high output LED lighting panels of 20,000 lumens each.