Weightlessness

Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed "zero-g" where the term is more correctly understood as meaning "zero g-force."

When bodies are acted upon by non-gravitational forces, as in a centrifuge, a rotating space station, or within a space ship with rockets firing, a sensation of weight is produced, as the contact forces from the moving structure act to overcome the body's inertia. In such cases, a sensation of weight, in the sense of a state of stress can occur, even if the gravitational field was zero. In such cases, g-forces are felt, and bodies are not weightless.

When the gravitational field is non-uniform, a body in free fall suffers tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimension (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known as microgravity and it prevails in orbiting spacecraft.

Zero Gravity (disambiguation)

Zero gravity refers to weightlessness.

Zero gravity may also refer to:

See also

Stunts and flights

Games

Film TV and entertainment

Music

See also

Sonic Riders: Zero Gravity

Sonic Riders: Zero Gravity, later released in Japan as Sonic Riders: Shooting Star Story (ソニックライダーズ シューティングスターストーリー, Sonikku Raidāzu: Shūtingu Sutā Sutōrī), is a hoverboard racing video game developed by Sonic Team and published by Sega. It is the fifth racing game in the Sonic the Hedgehog series, following Sonic Drift, Sonic Drift 2, Sonic R and its predecessor, Sonic Riders. A sequel titled Sonic Free Riders was released on November 4, 2010 exclusively for Kinect on Xbox 360.

Plot

The Story is split into two halves, the Heroes Story (Team Sonic), and Babylon Story (Babylon Rogues). Although the stories start separately, they overlap each other, telling the story as the main characters within that story see it. Following the format of Sonic Riders, Babylon Story also includes an epilogue that expands past the Heroes Story leading to the last course.

Sonic, Tails, and Knuckles are alerted to robots that are attacking a famous city of the future. They set out to retrieve a legendary artifact that has the ability to control gravity. Along the way they discover surprises, including the return of the Babylon Rogues, a group of avian thieves who are also after the artifacts. This sets off a war to decide who gets the artifact, leading them to settle their dispute by having an Extreme Gear competition.

State of Mind

State of mind may refer to:

Music

Other uses

Zoom (Electric Light Orchestra album)

Zoom is the thirteenth studio album by British symphonic rock band Electric Light Orchestra (ELO), released on 12 June 2001 on Epic Records. It was the first official ELO album since 1986's Balance of Power.

Recording

Zoom was recorded primarily by Jeff Lynne alone, with guest musicians that included George Harrison and Ringo Starr. It was one of Harrison's last recordings before his death. The only other ELO member appearing on the album, Richard Tandy, appears on one track and performed live in promotional concerts.

Release

The album was the band's first release of new material since Balance of Power, released in 1986. Although billed as a return to the classic ELO sound, the album sales were relatively poor and a planned North American concert tour was cancelled. Upon release, the album charted at number 34 in the UK Albums Chart, and at number 94 in the US Billboard 200. The album also peaked at number 14 on Billboard Top Internet Albums chart, number 51 on Austria's Ö3 Austria Top 40 Longplay chart, and number 16 on Germany's Media Control Album Chart. "Alright" peaked at number 87 on the Dutch Top 40 chart in the Netherlands.

State of Mind (TV series)

State of Mind is an American comedy-drama series created by novelist Amy Bloom. The series stars Lili Taylor. The series premiered on Lifetime July 15, 2007 at 9:00pm ET/PT. Its last episode was aired September 9, 2007.

Synopsis

Taylor as psychiatrist Anne Bellowes, who unexpectedly finds her husband cheating on her with their marriage counselor. The series deals with Bellowes and her relationship with her patients as well as other doctors in the practice.

Cast

External links