A Wisdom Archive on heavy metals

 
Definition and meaning of heavy metal:

 
heavy metal - a metal having a specific gravity of 5.0 or greater. Heavy metals are generally toxic to organisms in relatively low concentrations, and tend to accumulate in the food web. Examples include arsenic, cadmium, chromium, lead, and mercury

(Source: US National Oceanic and Atmospheric Administration (NOAA) )
 
Also see these pages: Oceanography, Oceanography Sitemap, Coral Reef, Environment, Sustainability, Climate Change,
 

Walter Bradford Cannon (1871-1945) was an American physiologist. Walter Cannon - Use of salts of heavy metals in X-Rays. He was one of the first researchers to mix salts of heavy metals (including bismuth subnitrate, bismuth oxychloride, and barium sulfate) into foodstuffs in order to improve the contrast of X-ray images of the digestive tract. The barium meal is a modern derivative of this research. Walter Cannon - Fight or Flight. In 1929, he coined the term fight or ... Including:

• Walter Cannon - Use of salts of heavy metals in X-Rays
• Walter Cannon - Fight or Flight
• Walter Cannon - Homeostasis
• Walter Cannon - Dry Mouth
• Walter Cannon - American Physiological Society

Read more here: » Walter Cannon: Encyclopedia - Walter Cannon

Christian metal is a form of heavy metal music with explicitly Christian lyrics and themes. It is a form of Christian alternative music. Christian metal - Origins. The first Christian metal band was arguably Jerusalem. Stryper was the first to popularize the genre. Christian Metal can be classified under many subgenres as well. For example, the band Horde, who have extreme black metal influences, yet are deemed grindcore and there is also Gånglîå which would be considered cybergrind . Then there is White ... Including:

• Christian metal - Origins
• Christian metal - Controversies
• Christian metal - Concerts
• Christian metal - List of Christian metal bands

Read more here: » Christian metal: Encyclopedia - Christian metal

A troll is a fearsome member of a mythical anthropomorph race from Scandinavian folklore. Their role ranges from fiendish giants – similar to the ogres of English fairy tales – to a devious, more human-like folk of the wilderness, living underground in hills or mounds, inclined to thieving and the abduction of humans which, in the case of infant abductees, was substituted with a changeling. They could also be known as hill-folk or mound-folk. In Shetlan ... Including:

• Troll - Trolls in Scandinavian folklore
• Troll - Fairytales and legends
• Troll - Trolls in Nordic art music and literature
• Troll - Gallery
• Troll - Troll Dolls
• Troll - American trolls
• Troll - Modern fantasy trolls
• Troll - In literature
• Troll - In comics
• Troll - In games
• Troll - In heavy metal music

Read more here: » Troll: Encyclopedia - Troll

Alternative metal is a fusion of heavy metal and alternative rock, characterized by some heavy metal trappings, but usually with a pronounced experimental edge, including unconventional lyrics, odd time signatures, unusual technique, and a resistance to conventional approaches to heavy music The term is used as a very loose definition, but is usually used to describe artists playing a style of metal which is considered either a unique approach to metal music or difficult to define as strictly metal or alternative. ... Including:

• Alternative metal - Key artists

Read more here: » Alternative metal: Encyclopedia - Alternative metal

Daath may refer to: Daath - an aspect of the modern Kabbalah belief system. See: Tree of Sephiroth. Daath - a Hebrew word meaning "knowledge". Cult of Daath - a contemporary heavy metal band. Other related archivesDaath, Hebrew, Kabbalah, Tree of Sephiroth, heavy metal

Read more here: » Daath: Encyclopedia - Daath

Acid Rock drainage (ARD) (similar to acid mine drainage) refers to the outflow of acidic water from (usually) abandoned metal mines. However, other distured areas, such as construction sites, subdivisions and transportation corridors etc may also contribute acid rock drainage to the environment. In many localities the liquor that drains from coal stocks, coal handling facilities, coal washeries, and even coal waste tips can be highly acidic, and in such cases it is treated as acid rock drainage. Acid rock drainage occurs ... Including:

• Acid mine drainage - Occurrence
• Acid mine drainage - Chemistry
• Acid mine drainage - Effects
• Acid mine drainage - Effects on pH
• Acid mine drainage - Yellow boy
• Acid mine drainage - Heavy metal contamination
• Acid mine drainage - Treatment
• Acid mine drainage - Oversight
• Acid mine drainage - Methods
• Acid mine drainage - List of acid mine drainage sites worldwide
• Acid mine drainage - North America
• Acid mine drainage - Europe
• Acid mine drainage - Oceania

Read more here: » Acid mine drainage: Encyclopedia - Acid mine drainage