Radiation

In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes:

Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles. Ionizing radiation carries more than 10 eV, which is enough to ionize atoms and molecules, and break chemical bonds. This is an important distinction due to the large difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively. Other sources include X-rays from medical radiography examinations and muons, mesons, positrons, neutrons and other particles that constitute the secondary cosmic rays that are produced after primary cosmic rays interact with Earth's atmosphere.

Radiation (disambiguation)

Radiation is a process in which a body emits energy that propagates through a medium, or through empty space, to be absorbed by other bodies. Radiation may also refer to:

Physics

Ionizing radiation

Ionizing (or ionising in British English) radiation is radiation that carries enough energy to free electrons from atoms or molecules, thereby ionizing them. Ionizing radiation is made up of energetic subatomic particles, ions or atoms moving at high speeds (usually greater than 1% of the speed of light), and electromagnetic waves on the high-energy end of the electromagnetic spectrum.

Gamma rays, X-rays, and the higher ultraviolet part of the electromagnetic spectrum are ionizing, whereas the lower ultraviolet part of the electromagnetic spectrum, and also the lower part of the spectrum below UV, including visible light (including nearly all types of laser light), infrared, microwaves, and radio waves are all considered non-ionizing radiation. The boundary between ionizing and non-ionizing electromagnetic radiation that occurs in the ultraviolet is not sharply defined, since different molecules and atoms ionize at different energies. Conventional definition places the boundary at a photon energy between 10 eV and 33 eV in the ultraviolet (see definition boundary section below).

Visions (Haken album)

Visions is the second studio album of progressive metal band Haken. The album was released mostly for the attention of people at ProgPower USA on 17 September 2011, with an official release date set for 24 October 2011.

Track listing

All lyrics written by Ross Jennings, all music composed by Richard Henshall, except where noted.

Reception

Visions received high praise from Sea of Tranquility webzine. It was described as "a staggeringly brilliant example of progressive metal" by Pete Pardo and "probably the final progressive masterpiece of 2011" by Murat Batmaz.

Personnel

Notes

Visions (Clearlight album)

Visions is a progressive rock album by Clearlight, released in 1978 on Celluloid / LTM Records in France. (LTM Records is specified on the cover, but the label says Celluloid Records.)

Clearlight's final album set off in yet another new direction: while previous albums incorporated a new age element blended with other styles, this one is primarily a new age album, reflecting the emergence of new age music as a popular genre. The album is mostly instrumental, but has one song with lyrics and another with spoken word, both in French. Indian instruments such as sitar and tablas are prominent. "Fullmoon Raga" expands upon musical themes from "Master Builder" from Gong's You album, blending Indian music with rock music. The album also incorporates Clearlight's usual psychedelic jazz fusion jamming.

This edition of Clearlight played only one concert (the first since its UK tour in late 1975), at the Olympia in Paris on April 8, 1978, with a variation of the album's line-up: Verdeaux, Malherbe, Lockwood, Mandin, Melkonian and Bouladoux plus Jean-Michel Kajdan (guitar) and Mico Nissim (keyboards). It was badly attended, putting a premature end to the project. This would be the last manifestation of Clearlight until a one-off performance in 1988.

Visions (Grant Green album)

Visions is an album by American jazz guitarist Grant Green featuring performances recorded in 1971 and released on the Blue Note label.

Reception

The Allmusic review by Stephen Thomas Erlewine awarded the album 3 stars and stated "Visions is a bit laid-back, and the electric piano-heavy arrangements are a little dated, but Grant Green never made a commercial pop-jazz album as appealing and satisfying".

Track listing

Personnel