L.D. 50 (album)
L.D. 50 is the debut studio album by the American heavy metal band Mudvayne. Released in 2000, it is the band's first release on Epic Records, following the independently released extended play, Kill, I Oughtta. L.D. 50 was coproduced by GGGarth & Mudvayne and executive produced by Steve Richards & Slipknot member Shawn "Clown" Crahan. The band's elaborate visual appearance resulted in increased recognition of the band and L.D. 50 peaked at No. 85 on the Billboard 200. The album was appraised by critics for its technical and heavy style of music.
Background and production
Lethal dose
In toxicology, the lethal dose (LD) is an indication of the lethality of a given substance or type of radiation. Because resistance varies from one individual to another, the "lethal dose" represents a dose (usually recorded as dose per kilogram of subject body weight) at which a given percentage of subjects will die. The lethal concentration is a lethal dose measurement used for gases or particulates. The LD may be based on the standard person concept, a theoretical individual that has perfectly "normal" characteristics, and thus not apply to all sub-populations.
Median lethal dose (LD50)
The median lethal dose, LD50 (abbreviation for "lethal dose, 50%"), LC50 (lethal concentration, 50%) or LCt50 (lethal concentration and time) of a toxin, radiation, or pathogen is the dose required to kill half the members of a tested population after a specified test duration. LD50 figures are frequently used as a general indicator of a substance's acute toxicity. A lower LD50 is indicative of increased toxicity.
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