Acronym it. This has become such a problem that it is even evaluated at the level of medical academies such as the American Academy of Dermatology. Acronyms are often taught as mnemonic devices, for example in physics the colors of the visible spectrum are said to be "ROY G. BIV" ("red-orange-yellow-green-blue-indigo-violet"). They are also used as mental checklists, for example in aviation: "GUMPS", which is "Gas-Undercarriage-Mixture-Propeller-Seatbelts". Other examples of mnemonic acronyms are "CAN SLIM", and "PAVPANIC" as well as "PEMDAS". It is not uncommon for acronyms to be cited in a kind of false etymology, called a "folk etymology", for a
Newlyn mean sea level at Newlyn ("see Ordnance Datum"). The mean sea level data was calculated from hourly readings of the sea level between 1 May 1915 and 30 April 1921. Newlyn's economy is largely dependent on its harbour and the associated fishing industry; Newlyn Harbour is the largest fishing port in England. The port was a major catcher of pilchard until the 1960s. Today, a few vessels have resumed pilchard fishing and use a modern version of the ring net. The largest vessels are beam trawlers owned by W Stevenson and Sons Ltd, one of Cornwall's largest fish producers; most