Binary

Binary means composed of two pieces or two parts and may refer to:

Mathematics

Computing

Science

Binary star

A binary star is a star system consisting of two stars orbiting around their common barycenter. Systems of two, three, four, or even more stars are called multiple star systems. These systems, especially when more distant, often appear to the unaided eye as a single point of light, and are then revealed as double (or more) by other means. Research over the last two centuries suggests that half or more of visible stars are part of multiple star systems.

The term double star is often used synonymously with binary star; however, double star can also mean optical double star. Optical doubles are so called because the two stars appear close together in the sky as seen from the Earth; they are almost on the same line of sight. Nevertheless, their "doubleness" depends only on this optical effect; the stars themselves are distant from one another and share no physical connection. A double star can be revealed as optical by means of differences in their parallax measurements, proper motions, or radial velocities. Most known double stars have not been studied sufficiently closely to determine whether they are optical doubles or they are doubles physically bound through gravitation into a multiple star system.

Double-precision floating-point format

Double-precision floating-point format is a computer number format that occupies 8 bytes (64 bits) in computer memory and represents a wide, dynamic range of values by using a floating point.

Double-precision floating-point format usually refers to binary64, as specified by the IEEE 754 standard, not to the 64-bit decimal format decimal64.

IEEE 754 double-precision binary floating-point format: binary64

Double-precision binary floating-point is a commonly used format on PCs, due to its wider range over single-precision floating point, in spite of its performance and bandwidth cost. As with single-precision floating-point format, it lacks precision on integer numbers when compared with an integer format of the same size. It is commonly known simply as double. The IEEE 754 standard specifies a binary64 as having:

This gives 15–17 significant decimal digits precision. If a decimal string with at most 15 significant digits is converted to IEEE 754 double precision representation and then converted back to a string with the same number of significant digits, then the final string should match the original. If an IEEE 754 double precision is converted to a decimal string with at least 17 significant digits and then converted back to double, then the final number must match the original.

Pure

Pure may refer to:

Computing

Companies and products

Literature

Pure (The Lightning Seeds album)

Pure is a compilation album by pop band The Lightning Seeds, released in 1996 and reaching #27 in the UK Albums Chart.

The first of what would turn out to be five compilations Ian Broudie released from 1996 to 2006, Pure, The Lightning Seeds' first release by Virgin, is almost a reissue rather than a compilation, since it consists of all but three of the songs released by Epic on the first two albums, Cloudcuckooland from 1990 and Sense from 1992; the only songs missing are one song from the first album ("Control the Flame") and two from Sense: ("Where Flowers Fade" and "Marooned").

Track listing

All songs written and composed by Ian Broudie; except where indicated. 

Charts

Certifications

References

Pure (Hayley Westenra album)

Pure is the first internationally published album by Christchurch, New Zealand soprano Hayley Westenra. Her previous albums were released only in New Zealand and nearby Australia. This album also received professional consultation from the legendary Sir George Martin who helped to create its "unique appeal". In 2004, it was the highest selling New Zealand Album and so it privileged Hayley with an award from the New Zealand Music Awards of 2004. It was published by the Decca Music Group label in 2003. It was distributed in the United States by Universal Classics in 2004. During its first week of sales it sold 19,068 copies. As of 2007, Pure is the best selling classical album for the 21st century in the UK.

Pure gives a new freshness to well known classical repertoire, as well as exploring the world of pop and traditional Maori choral singing, including renditions of "Who Painted the Moon Black?", "Hine e Hine" (a song of the Māori, the natives of New Zealand), "In Trutina", from Orff's Carmina Burana, "Wuthering Heights" (a cover of the Kate Bush hit), and the perennial spiritual classic "Amazing Grace". Sir George Martin co-wrote the track "Beat of Your Heart" just for the album. Also on the album is "Pokarekare Ana", a New Zealand love song which has enduring popularity, and has become Hayley's signature song.