Flash may refer to:
Bartholomew Henry "Bart" Allen II is a fictional superhero in the DC Comics Universe. Allen first appeared as the superhero Impulse, a teenage sidekick of the superhero the Flash, before later on becoming the second hero known as Kid Flash. The character first made a cameo appearance in The Flash #91 in 1994, while his first full appearance in issue #92, and appeared as the lead character in Impulse (1995–2002) and The Flash: The Fastest Man Alive (2006–2007). In the latter series, the character became the fourth hero to assume the identity of The Flash. Bart also prominently features in the superhero team titles Young Justice and Teen Titans. As the Flash, Bart was also a core character in 10 issues of Justice League of America.
As first conceived by writers, Bart was born in the 30th century to Meloni Thawne and Don Allen, and is part of a complex family tree of superheroes and supervillains. His father, Don, is one of the Tornado Twins and his paternal grandfather is Barry Allen, the second Flash. His paternal grandmother, Iris West Allen, is also the adoptive aunt of the first Kid Flash, Wally West (Bart's first cousin once removed). Additionally, Bart is the first cousin of XS, a Legionnaire and daughter of Dawn Allen. On his mother's side, he is a descendant of supervillains Professor Zoom and Cobalt Blue as well as the half-brother of Owen Mercer, the second Captain Boomerang. In addition to these relatives, he had a supervillain clone known as Inertia.
Flash is a science fiction novel by L. E. Modesitt published in 2004.
Flash is set in a future Earth of unspecified year; most likely 24th century as in its predecessor Archform: Beauty. Humanity is still recovering from environmental disasters of the 21st century, but technology provides enough material resources for everyone. Earth's old nations have merged into continental governments - such as NorAm, United Europe, and Sinoplex - many of which are partially or wholly under the sway of various multinational corporations. Various wars are in progress, including an independence movement of colonists on Mars.
The protagonist is Jonat DeVrai, a talented market research consultant and former Marine Corps officer who happens to have retained nanite combat enhancements that should be removed from retiring soldiers. As usual in Modesitt's books, DeVrai does not seek power; he is forced to exercise it because of others' attempts to use him in their designs to gather power to themselves.
In stratigraphy, bedrock is consolidated rock underlying the surface of a terrestrial planet, usually the Earth. Above the bedrock is usually an area of broken and weathered unconsolidated rock in the basal subsoil. The surface of the bedrock beneath soil cover is known as rockhead in engineering geology and identifying this, via excavations, drilling or geophysical methods, is an important task in most civil engineering projects. Superficial deposits (also known as drift) can be extremely thick, such that the bedrock lies hundreds of meters below the surface.
Bedrock may also experience subsurface weathering at its upper boundary, forming saprolite.
A solid geologic map of an area will usually show the distribution of differing bedrock types, i.e., rock that would be exposed at the surface if all soil or other superficial deposits were removed.
Soil scientists use the capital letters O, A, B, C, and E to identify the master soil horizons, and lowercase letters for distinctions of these horizons. Most soils have three major horizons—the surface horizon (A), the subsoil (B), and the substratum (C). Some soils have an organic horizon (O) on the surface, but such a horizon can also be buried. The master horizon, E, is used for subsurface horizons that have a significant loss of minerals (eluviation). Hard bedrock, which is not soil, uses the letter R.
Bedrock is the fictional prehistoric city which is home to the characters of the animated television series, The Flintstones (1960).
Though the first two seasons' opening credits of the original Flintstones series stated the town's population as only 2,500 people (though it did swell to 30,000 in a dream sequence in the sixth season episode entitled "Rip Van Flintstone"), Bedrock was generally presented as a medium-sized American city, with all the amenities of such, but with a "prehistoric" twist. For instance, sauropod dinosaurs were seen being used as cranes at the town's most well-known employer, "Slate Rock and Gravel" (also known as "Rockhead and Quarry Cave Construction Company" in the series' earlier episodes).
The climate of Bedrock is somewhat undetermined, since different Flintstones episodes and media have portrayed it differently. Palm trees and cycads are common yard trees, suggesting a warm climate. However, episodes and movies set at Christmas time depicted plenty of snow. Sometimes the wilderness on Bedrock's outskirts appears to be desert-like, whereas at other times it resembles a tropical/subtropical jungle (as shown in the opening scenes of the theatrical animated movie The Man Called Flintstone).