Kill switch

A kill switch, also known as an emergency stop or e-stop, is a safety mechanism used to shut off a device in an emergency situation in which it cannot be shut down in the usual manner. Unlike a normal shut-down switch/procedure, which shuts down all systems in an orderly fashion and turns the machine off without damaging it, a kill switch is designed and configured to completely and as quickly as possible abort the operation (even if this damages equipment) and be operable in a manner that is quick, simple (so that even a panicking operator with impaired executive function can activate it). Kill switches are usually designed so as to be obvious even to an untrained operator or a bystander.

Many kill switches feature a removable barrier or other protection against accidental activation (e.g., a plastic cover that must be lifted or glass that must be broken). Such a removable barrier is commonly called a Mollyguard.

Kill switches are featured especially often as part of mechanisms whose normal operation or foreseeable misuse may cause injury or death; designers who include such switches consider damage to or destruction of the mechanism to be an acceptable cost of preventing that injury or death.

Big Red

Big Red may refer to:

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Tiburonia

Tiburonia granrojo is a jellyfish of the family Ulmaridae discovered in 2003, and the only member of its genus yet identified. It was discovered by a crew from MBARI led by George Matsumoto. Its genus name is Tiburonia because the ROV the crew were using was called Tiburon, meaning "shark" in Spanish. Its species name was originally to be called "Big Ugly", but Kirsten Matsumoto raised objections to this name, and renamed it granrojo, meaning "big red" in Spanish.

Tiburonia granrojo is one of the largest sea jellies and unusual in a number of ways. They live at ocean depths of 600 to 1,500 metres (2,000 to 4,900 ft) and have been found across the Pacific Ocean in the Gulf of California, Monterey Bay, Hawaii and Japan. They can grow up to 76 centimetres (30 in) in diameter, according to the California Academy of Sciences, and have thick fleshy oral arms in place of the long tentacles found in most jellies. The entire jellyfish is deep red in color.

To date, only 23 members of the species have been found and only one—a small specimen under 15 centimetres (6 in)—has been retrieved for further study. Several high resolution videos of granrojo have been taken by remote controlled submarines. The discovery was announced by Dr. Matsumoto and colleagues in Marine Biology in 2003.

Big Red (sculpture)

Big Red, also known as Red, is an outdoor 1974 steel sculpture by Bruce Beasley, installed at West 7th Avenue between Washington and Jefferson streets in Eugene, Oregon, United States.

Description and history

Bruce Beasley's Big Red is an outdoor sculpture installed at Washington Jefferson Park, located at West 7th Avenue between Washington and Jefferson, in Eugene. The red painted, abstract steel sculpture measures 12 feet (3.7 m), 9 inches (23 cm) x 11 feet (3.4 m), 6 inches (15 cm) x 36 feet (11 m), 5 inches (13 cm).

The piece is among those created in June 1974, when the city held the Oregon International Sculpture Symposium, which attracted artists from around the country. According to the Smithsonian Institution, the purpose of the event was to provide attendees "an opportunity to observe the creation of a major art work, how it was constructed and what the artist meant to convey with it". Studio space was provided at the University of Oregon and at Lane Community College; Big Red was created at the latter location and was relocated to its present site by a large truck and crane. The work was funded by a National Endowment for the Arts, Art in Public Places grant that was given to the city in 1974. Other funding sources included the City of Eugene, Lane Community College, Lane County, Oregon Arts Commission, the Portland Art Museum, and the University of Oregon.