Vedic Extensions is a Unicode block containing characters for representing tones and other vedic symbols in Devanagari and other Indic scripts.

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The Vedas (/ˈveɪdəz, ˈviː-/;Sanskrit: वेद véda, "knowledge") are a large body of texts originating in ancient India. Composed in Vedic Sanskrit, the texts constitute the oldest layer of Sanskrit literature and the oldest scriptures of Hinduism. Hindus consider the Vedas to be apauruṣeya, which means "not of a man, superhuman" and "impersonal, authorless".

Vedas are also called śruti ("what is heard") literature, distinguishing them from other religious texts, which are called smṛti ("what is remembered"). The Veda, for orthodox Indian theologians, are considered revelations seen by ancient sages after intense meditation, and texts that have been more carefully preserved since ancient times. In the Hindu Epic the Mahabharata, the creation of Vedas is credited to Brahma. The Vedic hymns themselves assert that they were skillfully created by Rishis (sages), after inspired creativity, just as a carpenter builds a chariot.

There are four Vedas: the Rigveda, the Yajurveda, the Samaveda and the Atharvaveda. Each Veda has been subclassified into four major text types – the Samhitas (mantras and benedictions), the Aranyakas (text on rituals, ceremonies, sacrifices and symbolic-sacrifices), the Brahmanas (commentaries on rituals, ceremonies and sacrifices), and the Upanishads (text discussing meditation, philosophy and spiritual knowledge). Some scholars add a fifth category – the Upasanas (worship).

Vedic may refer to:

Differential interference contrast (DIC) microscopy, also known as Nomarski interference contrast (NIC) or Nomarski microscopy, is an optical microscopy technique used to enhance the contrast in unstained, transparent samples. DIC works on the principle of interferometry to gain information about the optical path length of the sample, to see otherwise invisible features. A relatively complex optical system produces an image with the object appearing black to white on a grey background. This image is similar to that obtained by phase contrast microscopy but without the bright diffraction halo. The technique was developed by Georges Nomarski.

DIC works by separating a polarized light source into two orthogonally polarized mutually coherent parts which are spatially displaced (sheared) at the sample plane, and recombined before observation. The interference of the two parts at recombination is sensitive to their optical path difference (i.e. the product of refractive index and geometric path length). Adding an adjustable offset phase determining the interference at zero optical path difference in the sample, the contrast is proportional to the path length gradient along the shear direction, giving the appearance of a three-dimensional physical relief corresponding to the variation of optical density of the sample, emphasising lines and edges though not providing a topographically accurate image.

Extension, extend or extended may refer to:

Computing

Mathematics

Algebra

Extensions is an album by jazz pianist McCoy Tyner released on the Blue Note label. It was recorded on February 9, 1970 and released in 1973. It features performances by Tyner with Gary Bartz, Wayne Shorter, Ron Carter, Elvin Jones, and Alice Coltrane on two tracks.

Reception

In his AllMusic review Scott Yanow says, "The all-star sextet stretches out on lengthy renditions of four of Tyner's modal originals, and there is strong solo space for the leader and the two saxophonists... Stimulating music".

Reviewing the album for jazz.com, Jared Pauley says, "McCoy Tyner finds himself among elite company on Extensions. Recorded as jazz was entering the fusion period, this is a great example of just how good straight-ahead swing can sound... This performance matches the superb quality of previous Shorter and Tyner albums where members of the Davis and Coltrane groups recorded together."

Track listing

(All compositions by Tyner)

Extensions is the fourth album by The Manhattan Transfer, released on October 31, 1979, on the Atlantic Records label.

Marking a new era for the group, the album was the first one with Cheryl Bentyne, who replaced Laurel Massé the previous year. It was also the first album that contained songs that were hits in both the jazz and pop categories. The disco hit song "Twilight Zone/Twilight Tone" reached #12 on Billboard's Disco chart, and on the Hot 100 reached #30. "Trickle, Trickle" reached #73 on the Billboard Magazine's Hot 100 chart. Overall, the album reached #55 on the Billboard Magazine Top LP's chart.

The most widely known song from this album, Joe Zawinul's "Birdland," won the group its first Grammy Award for Best Jazz Fusion Performance, Vocal or Instrumental in 1981.Jon Hendricks wrote lyrics for the vocalese version on the album and Janis Siegel received a Grammy for her vocal arrangement of "Birdland". Eddie Jefferson was writing the new lyrics for the song "Birdland", but he was killed before finishing them. This album is dedicated to him. "Birdland" was the most played Jazz track in 1980 and many regard "Birdland" as the "signature song" of the group.