Shock (mechanics)

A mechanical or physical shock is a sudden acceleration caused, for example, by impact, drop, kick, earthquake, or explosion. Shock is a transient physical excitation.

Shock describes matter subject to extreme rates of force wtr to time. Shock is a vector that has units of an acceleration (rate of change of velocity). The unit g (or g) represents multiples of the acceleration of gravity and is conventionally used.

A shock pulse can be characterised by its peak acceleration, the duration, and the shape of the shock pulse (half sine, triangular, trapezoidal, etc.). The Shock response spectrum is a method for further evaluating a mechanical shock.

Shock measurement

Shock measurement is of interest in several fields such as

Acute stress reaction

Acute stress reaction (also called acute stress disorder, psychological shock, mental shock, or simply shock) is a psychological condition arising in response to a terrifying or traumatic event, or witnessing a traumatic event. It should not be confused with the unrelated circulatory condition of shock, or the concept of shock value.

"Acute stress response" was first described by Walter Cannon in the 1920s as a theory that animals react to threats with a general discharge of the sympathetic nervous system. The response was later recognized as the first stage of a general adaptation syndrome that regulates stress responses among vertebrates and other organisms.

Signs and symptoms

Common symptoms that sufferers of acute stress disorder experience are: numbing; emotional detachment; muteness; derealization; depersonalization; psychogenic amnesia; continued re-experiencing of the event via thoughts, dreams, and flashbacks; and avoidance of any stimulation that reminds them of the event. During this time, they must have symptoms of anxiety, and significant impairment in at least one essential area of functioning. Symptoms last for a minimum of 2 days, and a maximum of 4 weeks, and occur within 4 weeks of the event.

CSI: Miami (season 4)

The fourth season of CSI: Miami premiered on CBS on September 19, 2005 and ended May 22, 2006. The series stars David Caruso and Emily Procter.

Description

With a mole in their midst, Horatio and Calleigh head a team of elite Crime Scene Investigators as they enter their most challenging season yet. Under the roof of a state-of-the-art redesigned crime lab, the dynamic duo investigate a series of crimes including a night-club murder, the death of a pool boy, a cold case rape, and a murder with a double-jeopardy clause, all whilst under the scrutiny of an anonymous mole, and facing a series of cases that threaten the team. With Alexx accused of murdering a child molester, Horatio accused of murdering an innocent woman, Wolfe facing the loss of his eye, and Mac Taylor joining the team when a prisoner transfer goes awry, it's ultimately Delko that faces the greatest loss, when his sister is gunned down by the Mala Noche gang in an attack that will begin a narrative that will recur throughout the next several seasons.

Tone (Jeff Ament album)

Tone is the debut solo album of American rock bassist and Pearl Jam-member Jeff Ament, released September 16, 2008 on Monkeywrench Records. 3,000 copies of the album were pressed and distributed through independent record stores across the United States, as well as through Pearl Jam's official website. The album has also been made available as a digital download via Pearl Jam's official website for US$4.99.

Background

The album contains ten songs written over a span of 12 years. It features a raw, experimental sound and was recorded by Ament over an eight-year period at Horseback Court in Blue Mountain, Montana, which is Ament's home studio, and completed in 2008.Tone was mixed by Brett Eliason, who had previously worked with Ament as Pearl Jam's sound engineer. Its cover art was created by Ament.

Former Three Fish drummer and frequent Ament collaborator Richard Stuverud contributed his drumming to seven songs on the album, and King's X frontman Doug Pinnick contributed lead vocals to the song "Doubting Thomasina". Pinnick would later in 2010 feature as the lead singer of another Ament/Stuverud project, "Tres Mts". "The Forest" was recorded by Pearl Jam; however, vocalist Eddie Vedder never got around to adding vocals to the track. The instrumental version by Pearl Jam is featured in the 2007 Pearl Jam concert film, Immagine in Cornice. The version of the song on Tone features vocals by Ament and music taken from the original demo version of the song.

Tone (musical instrument)

Tone and sound are terms used by musicians and related professions to refer to the audible characteristics of a player's sound. Tone is the product of all influences on what can be heard by the listener, including the characteristics of the instrument itself, differences in playing technique (e.g. embouchure for woodwind and brass players, fretting technique or use of a slide in stringed instruments, or use of different mallets in percussion), and the physical space in which the instrument is played. In electric and electronic instruments, tone is also affected by the amplifiers, effects, and speakers used by the musician. In recorded music, tone is also influenced by the microphones, signal processors, and recording media used to record, mix, and master the final recording, as well as the listener's audio system.

Stringed instruments

The tone of a stringed instrument is influenced by factors related to construction and player technique. The instrument's shape, particularly of its resonant cavity, as well as the choice of tonewood for the body, neck, and fingerboard, are all major determinants of its tone. The material and age of the strings is also an important factor. Playing technique also influences tone, including subtle differences in the amount of pressure applied with the fretting hand, picking or bowing intensity, use of muting and/or drone techniques.

Tone (TVXQ album)

Tone (stylized as TONE) is the fifth Japanese studio album (tenth overall) by South Korean pop group Tohoshinki, released on September 28, 2011 by Avex Trax. It is Tohoshinki's first Japanese album since becoming a two-piece band, with members Yunho and Changmin. Tone was released in three physical versions – Version A, a CD+DVD version with music videos; Version B, another CD+DVD version with off-shot movies; and Version C, a CD only version with a bonus track. Composing sessions for the album began in 2009, bull full production began in early 2011.

Musically, Tone is a pop music album largely consisting of uptempos, midtempos, and ballads with R&B, electropop and rock influences. Tone received positive reviews upon its release, with some critics praising it as one of Tohoshinki's most cohesive Japanese album to-date. The album was a major commercial success; it debuted at number one on the Oricon Albums Chart, selling 205,000 copies on its first week of release. Earning a platinum certification by the Recording Industry Association of Japan (RIAJ) two weeks later, Tone eventually became Tohoshinki's best-selling Japanese studio album, with over 330,000 copies sold.