In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it and moves along a geodesic. The present article only concerns itself with free fall in the Newtonian domain.
An object in the technical sense of free fall may not necessarily be falling down in the usual sense of the term. An object moving upwards would not normally be considered to be falling, but if it is subject to the force of gravity only, it is said to be in free fall. The moon is thus in free fall.
In a uniform gravitational field, in the absence of any other forces, gravitation acts on each part of the body equally and this is weightlessness, a condition that also occurs when the gravitational field is zero (such as when far away from any gravitating body). A body in free fall experiences "0 g".
The term "free fall" is often used more loosely than in the strict sense defined above. Thus, falling through an atmosphere without a deployed parachute, or lifting device, is also often referred to as free fall. The aerodynamic drag forces in such situations prevent them from producing full weightlessness, and thus a skydiver's "free fall" after reaching terminal velocity produces the sensation of the body's weight being supported on a cushion of air.
Sergeant Charles Christian Cameron "Nish" Bruce QGM (8 August 1956 – 8 January 2002) was a former British Army soldier and freefall expert of high altitude military parachuting who served in 22 (SAS) Special Air Service (1982–88). He served with the 22 SAS in the Falklands War, on anti-drug operations in South and Central America and in Northern Ireland during Operation Banner for which he was awarded the Queen's Gallantry Medal in 1986.
He received the South Atlantic Medal in 1982 with B Squadron of the 22 Special Air Service and the General Service Medal with the 2nd Battalion, Parachute Regiment for services in Northern Ireland during The Troubles.
Bruce was born in Chipping Norton in 1956, middle son of Ewen Anthony Guy Cameron Bruce. He was the paternal grandson of Major Ewen Cameron Bruce (of Blaen-y-cwm).
Bruce joined the Parachute Regiment in 1973 at age 17 and in 1978 spent 4 years with The Red Devils Display Team participating in test jumping, international exhibitions and competitions before passing SAS selection and joining 22 SAS in April 1982.
Free fall is the ability to achieve the sensation of weightlessness (for example to be falling freely in an atmosphere, or to be in zero-g). In skydiving, the term freefall is also used for the portion of the skydive prior to the deployment of a parachute, even though significant portions of it are at terminal velocity rather than freely accelerating in gravity.
Free fall, Free-fall or Freefall may also refer to:
Exposure may refer to:
Exposure is a current affairs strand, broadcast in the United Kingdom on the ITV network. The programme comprises long-form films, investigating and exploring domestic and foreign topics. Episodes are produced both by independent production companies and in-house by ITV Studios. The average budget for a single edition is between £150,000 and £200,000.
The series was commissioned by Peter Fincham, ITV's Director of Television, and is a sister show to year-round current affairs strand Tonight. It made its debut on Monday 26 September 2011 – airing at 22.40, directly after ITV News at Ten. Since its launch, the programme has usually occupied this near-peak slot, but has also been shown as late as 23.10. On 3 March 2015, it made its only appearance to date in primetime, airing at 21.00.
The series was broadcast on Mondays in 2011 and Wednesdays in 2012. The 2013 series was billed as an eight-episode run (the longest to date), with five of the editions airing on consecutive Thursdays in their traditional autumn slots and the remaining three being broadcast as standalone episodes between February and July 2014.
Exposure is the fourth novel in the Virals series of novels for young adults written by the American forensic anthropologist and crime writer, Kathy Reichs and her son Brendan Reichs, featuring Tory Brennan, great-niece of Temperance Brennan.
The story starts some time after the ending of Code, the third book in the series. However, it's not long before things start to go wrong. Twins Lucy and Peter Gable, classmates of the Virals, have been kidnapped, and the police seem baffled. The Virals decide to investigate, but matters become worse when Tory's best female friend, Ella, goes missing as well.