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 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 (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).

Ultimate Prince is a greatest hits album by American recording artist Prince. It was released on August 22, 2006 by Warner Bros. Records. The two-disc set contains a disc of some previously released hits (some in single edit form; only "My Name Is Prince" has not been on a previous hits collection), and another of extended remixes of hits and a B-side, most of which have only been previously released as vinyl 12-inch singles.

Release date controversy

The album was originally slated to be released in North America on March 14, 2006, but was canceled just days before its release. This is likely due to Prince not wanting competition with his new 3121, scheduled to be released only one week later. However, promo copies of the album had already been sent to some retailers and were sold before the album's recall. A second release date of May 22 was proposed, but was again canceled and the album's future was unknown for a time. Three months later, it was officially released on August 22, 2006 to generally positive reviews.

The 2003 successful motion picture Freaky Friday included a soundtrack which featured songs by various artists. The album was called a "mixed bag" by allmusic, which specifically cited American Hi-Fi's "The Art of Losing," The Donnas' "Backstage", Andrew W.K.'s "She Is Beautiful," and Joey Ramone's "What a Wonderful World" as good, and strongly criticized the rest of the album.

The album was certified Gold and sold over 650,000 to date. In 2004 British girl-band Girls Aloud recorded "You Freak Me Out" for the film and was intended to be added to the soundtrack, however it was decided not to add it to the album, but was included on the re-release of the band's debut album, Sound of the Underground (2004).

Track listing

Ultimate is a compilation album of recordings by Boney M. released by BMG-Ariola France. Early 1999 saw the release of "Ma Baker - Somebody Scream" which was a collaboration with Horny United and German band Sash! which peaked at #22 in the UK and was also a Top 30 hit in Germany. In France the single was followed up by compilation Ultimate which in addition to the new remix contained edited versions of the band's hits previously issued on The Magic Of Boney M. - 20 Golden Hits and Fantastic Boney M., an extended version of single "Kalimba De Luna" from Kalimba de Luna - 16 Happy Songs and two tracks from 1993's More Gold - 20 Super Hits Vol. II.

Track listing