All articles starting with L
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Logan Lagoon
Logan Lagoon (Ramsar site no. 252) is a 2,257-hectare coastal estuarine wetland on Flinders Island, Tasmania, listed 16 November 1982; a migratory shorebird refuge meeting Ramsar criteria 1, 2, 3, 4, and 6.
Logan Lee
Logan Lee: name shared by several American athletes, chiefly a Pittsburgh Steelers NFL defensive lineman (No. 91, Iowa, sixth-round 2024 pick) and a Fort Wayne-born midfielder for NISA's Flower City Union.
Logan Lerman
Logan Lerman, American actor, began in commercials at age four, led the Percy Jackson films (2010, 2013), played Charlie in The Perks of Being a Wallflower (2012), Jonah in Hunters, and Isaac in Oh, Hi! (2025), and joined Only Murders in the Building season five.
Logan Lucky
Logan Lucky (2017) is Steven Soderbergh's heist comedy, written by Rebecca Blunt, starring Channing Tatum, Adam Driver, and Daniel Craig as West Virginians robbing Charlotte Motor Speedway during the Coca-Cola 600; released independently for $29 million.
Logan Marshall-Green
Logan Marshall-Green, American actor and writer-director (born Charleston, South Carolina), known for The O.C., 24, Prometheus, Upgrade, and as Pete "Cal" Calvin in the CBS Yellowstone spin-off Marshals.
Logan Martin
Logan Martin is an Australian professional freestyle BMX rider, born in 1993, who won the first Olympic gold medal in men's BMX Freestyle Park at Tokyo 2020.
Logan Morris (footballer)
Logan Morris is an Australian rules footballer who plays as a key forward for the Brisbane Lions, winning AFL premierships in each of his first three seasons from 2024.
Logan Motorway
The Logan Motorway is a tolled motorway in Brisbane, Australia, linking the Ipswich and Pacific motorways. Opened in 1988, it carries about 210,000 trips daily.
Logan Paul
Logan Paul (Logan Alexander Paul, born 1995, Westlake, Ohio) is an American YouTuber, Vine star, boxer, WWE wrestler, and entrepreneur behind Prime, Lunchly, and IMPAULSIVE, known for the 2018 Aokigahara video controversy and CryptoZoo lawsuit.
Logan Roy
Logan Roy is the fictional media magnate of HBO's Succession, played by Brian Cox, who built Waystar Royco, a Murdoch-like empire with the ATN network, and died in Season 4 Episode 3.
Logan Ryan
Logan Ryan, NFL defensive back (cornerback/safety) from Rutgers, drafted 83rd overall by New England in 2013; two-time Super Bowl champion; known for intercepting Tom Brady's final Patriots pass; retired 2024 after 11 seasons, 19 interceptions.
Logan Sargeant
Logan Sargeant, American racing driver from Fort Lauderdale; 2015 junior karting world champion, 2020 F3 runner-up fight, Williams F1 driver 2023-2024 with 36 starts and 1 point; now in sportscars with Ford WEC from 2027.
Logan Taylor
Logan Taylor, Los Angeles Chargers offensive guard (No. 65), Canadian-born Boston College lineman drafted 2026 Round 6, No. 202 overall via Patriots trade; 46 college starts at four OL positions, Second-Team All-ACC 2025.
Logan Thomas
Logan Thomas, NFL tight end and former Virginia Tech quarterback; drafted 120th overall by Arizona in 2014, broke out with Washington in 2020 (72 catches, 670 yards, 6 TDs), released March 2024.
Logan Wilde
Logan Wilde (born 1979) is an American compound archer from Pocatello, Idaho, brother of Reo Wilde; 1999 world team champion, 2006 World Cup Final winner, later USA Archery fundraising manager.
Logan Williams
Logan Kari Williams (2003-2020) was a Canadian child actor, young Barry Allen on The Flash and Miles Montgomery on When Calls the Heart; died of accidental fentanyl toxicity at 16.
Logan, Utah
Logan, Utah: county seat of Cache County, founded 1859, incorporated 1866, named for trapper Ephraim Logan; home of Utah State University, population about 55,000, at the mouth of Logan Canyon.
Logan's Run
Logan's Run, dystopian science fiction novel by William F. Nolan and George Clayton Johnson (Dial Press, 1967), set in a youth-ruled 2116 where mandatory death at 21 via Sleepshops is enforced by Sandmen; adapted into a 1976 Michael Anderson film raising the age to 30.
Logan's Run (film)
Logan's Run (1976) is a Michael Anderson MGM science fiction film based on Nolan and Johnson's novel, starring Michael York and Jenny Agutter as runners fleeing a domed city that kills everyone at 30; it won a Special Academy Award for visual effects.
Loganair
Loganair is a Scottish regional airline, established in 1962 and headquartered at Glasgow Airport, operating scheduled passenger and cargo flights across the UK, Ireland, and Scandinavia.
Loganberry
Loganberry (Rubus × loganobaccus) is a raspberry-American blackberry hybrid created in 1881 by Judge James Harvey Logan in Santa Cruz, California; deep red, sharp fruit used for jams, juice, and processing, parent of tayberry and boysenberry.
Loganiaceae
Loganiaceae (loganias) is a conserved family name in Gentianales with 16 genera and about 400 species, including Strychnos and Spigelia; once polyphyletic, now circumscribed as sister to Apocynaceae.
Logarithm
A logarithm, the inverse of exponentiation, is the exponent a base must be raised to in order to produce a given number, invented by John Napier in 1614.
Logarithm tables
Logarithm tables are printed lists pairing numbers with their logarithms so multiplication and division can be done by addition and subtraction, standard from John Napier's first table of 1614 until calculators spread in the 1970s.
Logarithmic decrement
The logarithmic decrement is a measure of damping, defined as the natural logarithm of the amplitude ratio of two successive cycles of damped free vibration.
Logarithmic derivative
The logarithmic derivative of a function f is f′/f, equal to the derivative of ln f; it measures how fast f changes relative to its current size.
Logarithmic integral function
The logarithmic integral, li(x), is a special function defined as the integral of 1/ln t for x > 1, used as the standard approximation to the prime counting function π(x).
Logarithmic mean temperature difference
The logarithmic mean temperature difference, or log mean temperature difference, is the effective mean temperature difference between hot and cold fluids in a heat exchanger, used in sizing calculations.
Logarithmic negativity
Logarithmic negativity is an entanglement measure for bipartite quantum states, introduced by Vidal and Werner in 2002, computable exactly for any mixed state and upper bounding distillable entanglement.
Logarithmic potential
The logarithmic potential is the potential U(z) = ∫ log(1/|z−w|) dμ(w) for a compactly supported measure in the plane; its kernel is the Laplacian's two-dimensional fundamental solution, underlying logarithmic potential theory, capacity, and log gases.