RHA
RHA is an acronym that may refer to:
Rha may refer to:
Letters from alphabets that can be called rha:
See also
Rha (Cyrillic)
Rha (Ԗ ԗ; italics: Ԗ ԗ) is a letter of the Cyrillic script. It looks like a cross-digraph of the Cyrillic letters Er (Р р) and Kha (Х х), but it is not a composable ligature.
Rha was used in the alphabet of the Moksha language, where it represented the voiceless alveolar trill /r̥/.
Computing codes
See also
Rolled homogeneous armour
Rolled homogeneous armor (RHA) is a type of armor made of a single steel composition, as opposed to layered or cemented armor. Its first common application was in tanks. It fell out of use after World War II as new anti-tank rounds were developed, against which it was ineffective.
Composition
Armored steel must be hard, yet resistant to shock, in order to resist high velocity metal projectiles. Steel with these characteristics is produced by processing cast steel billets of appropriate size and then rolling them into plates of required thickness. Hot rolling homogenizes the grain structure of the steel, removing imperfections which would reduce the strength of the steel. Rolling also elongates the grain structure in the steel to form long lines, which spreads stress loaded onto the steel throughout the metal, avoiding a concentration of stress in one area.
RHA is called homogeneous armor because its structure and composition is uniform throughout its thickness. The opposite of homogeneous steel plate is cemented or face-hardened steel plate, where the face of the steel is composed differently from the substrate. The face of the steel, which starts as an RHA plate, is hardened by a heat-treatment process.
Chill-out music
Chill-out music (sometimes also chillout, chill out or simply chill) is a genre of electronic music and an umbrella term for several styles of electronic music characterized by their mellow style and mid-tempo beats, "chill" being derived from a slang word for "relax".
Chill-out music emerged in the early and mid-1990s in "chill rooms" at dance clubs, where relaxing music was played to allow dancers a chance to "chill out" from the more emphatic and fast-tempo music played on the main dance floor.
The genres associated with chill-out are mostly ambient, trip hop, nu jazz, ambient house and other subgenres of downtempo. Sometimes, the easy listening subgenre lounge is considered to belong to the chill-out collection as well. Chill-out, as a musical genre or description, is synonymous with the more recently popularized terms "smooth electronica" and "soft techno", and it is a loose genre of music blurring into several other very distinct styles of electronic and lo-fi music.
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