Invocation

An invocation (from the Latin verb invocare "to call on, invoke, to give") may take the form of:

These forms are described below, but are not mutually exclusive. See also Theurgy.

Supplication or prayer

As a supplication or prayer it implies to call upon God, a god or goddess, a person, etc. When a person calls upon God, a god, or goddess to ask for something (protection, a favour, his/her spiritual presence in a ceremony, etc.) or simply for worship, this can be done in a pre-established form or with the invoker's own words or actions. An example of a pre-established text for an invocation is the Lord's Prayer.

All religions in general use invoking prayers, liturgies, or hymns; see for example the mantras in Hinduism and Buddhism, the Egyptian Coming Out by Day (aka Book of the Dead), the Orphic Hymns and the many texts, still preserved, written in cuneiform characters on clay tablets, addressed to Shamash, Ishtar, and other deities.

Invocation (The X-Files)

"Invocation" is the fifth episode of the eighth season of the American science fiction television series The X-Files. It premiered on the Fox network on December 3, 2000. The episode was written by David Amman and directed by Richard Compton. "Invocation" is a "Monster-of-the-Week" story, unconnected to the series' wider mythology. The episode received a Nielsen rating of 8.2 and was viewed by 13.9 million viewers. Overall, the episode received mixed reviews from critics.

The series centers on FBI special agents Dana Scully (Gillian Anderson) and her new partner John Doggett (Robert Patrick)—following the alien abduction of her former partner, Fox Mulder (David Duchovny)—who work on cases linked to the paranormal, called X-Files. In this episode, a little boy mysteriously reappears after having been kidnapped for ten years. However, he has not aged one bit after his disappearance. While the case stirs up painful memories for Doggett, suspicion stirs that the boy is not all he seems.

Invocation (Sympathy album)

Invocation is the 2002 debut album by the Canadian technical death metal band Sympathy. The album was published by Fear Dark, a Dutch record label.

Although suffering from low production values, the album got positive feedback in underground metal circles and magazines such as BW & BK and was mentioned in Metal Maniacs magazine as one of the reader's albums of the year for 2002. Noted for solid songwriting, Sympathy has since re-recorded several of the album's songs with better production.

The music features deep growling, occasional shrieking, heavily-distorted guitar sound, plenty of tempo-changes and atonal riffs, some symphonic keyboards and computer drums. "Prelude and Toccata in e Minor" is a piano instrumental, and "Christus Factus Est" features operatic female vocals. The album cover was done by Jeffray Arwadi of Soundmind Graphics, also known as the guitarist/vocalist for the Indonesian avant-garde metal band Kekal.

Track listing

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.