Roller Wikipedia ~ The roller family Coraciidae was introduced as Coracinia by the French polymath Constantine Samuel Rafinesque in 1815 It is one of nine families in the order Coraciiformes which also includes the motmots beeeaters todies groundrollers cuckoo roller and three families of kingfishers

Roller derby Wikipedia ~ Roller derby is a contact sport played by two teams of five members roller skating counterclockwise around a track Roller derby is played by approximately 1250 amateur leagues worldwide mostly inside the United States

Royler Gracie Wikipedia ~ Royler Gracie born December 6 1965 is a BrazilianAmerican retired mixed martial artist and Brazilian jiujitsu practitioner He ran the Gracie Humaitá school in Rio de Janeiro for many years under his father Helios direction and lives and teaches in San Diego California

Rollingelement bearing Wikipedia ~ A rollingelement bearing also known as a rolling bearing is a bearing which carries a load by placing rolling elements such as balls or rollers between two bearing rings called races The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding

Euthanasia Coaster Wikipedia ~ The Euthanasia Coaster is a hypothetical steel roller coaster designed to kill its passengers In 2010 it was designed and made into a scale model by Lithuanian artist Julijonas Urbonas a PhD candidate at the Royal College of Art in who has worked at an amusement park stated that the goal of his concept roller coaster is to take lives with elegance and euphoria

Indian roller Wikipedia ~ The Indian roller Coracias benghalensis is a bird of the family Coraciidae the occurs widely from West Asia to the Indian is listed as least concern on the IUCN Red List It is best known for its aerobatic displays of males during the breeding season It is often seen perched along roadside trees and wires and are commonly seen in open grassland and scrub forest

Carl Eller Wikipedia ~ Carl Eller born January 25 1942 is a former professional American football player in the National Football League NFL who played from 1964 through 1979 He was born in WinstonSalem North Carolina and attended the University of Minnesota He was elected to the Pro Football Hall of Fame in 2004

Roller coaster Wikipedia ~ A roller coaster is a type of amusement ride that employs a form of elevated railroad track designed with tight turns steep slopes and sometimes inversions People ride along the track in open cars and the rides are often found in amusement parks and theme parks around the world

Roller chain Wikipedia ~ Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic industrial and agricultural machinery including conveyors wire and tubedrawing machines printing presses cars motorcycles and consists of a series of short cylindrical rollers held together by side links