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Freeflow (also free flow and free-flow) in underwater diving apparatus is a continuous flow of gas from a storage or supply unit. In scuba diving it is usually undesirable and considered a malfunction, while in surface supplied diving it may be a malfunction or a user selected option in demand systems, or the standard mode of operation in freeflow systems.
Unofficial names include air pack, air tank, oxygen cylinder or simply pack, terms used mostly in firefighting. If designed for use under water, it is also known as a scuba set (self-contained underwater breathing apparatus).
The current no-limit world record holder is Herbert Nitsch with a depth of 214 metres (702 ft) set on 9 June 2007, in Spetses, Greece, [6] however, in a subsequent dive on 6 June 2012 in Santorini, Greece to break his own record, he went down to 253.2 metres (831 ft) and suffered severe decompression sickness immediately afterwards [7] and subsequently retired from competitive events.
Urban Freeflow (often abbreviated to UF) was a United Kingdom-based parkour and freerunning related company that was founded in 2003.. Five Urban Freeflow members left the group after participating in a 2009 corporate-sponsored race that featured only Urban Freeflow runners, [1] effectively ending the organization's business operations.
A detonation flame arrester (also spelled arrestor) is a device fitted to the opening of an enclosure or to the connecting pipe work of a system of enclosures and whose intended function is to allow flow but prevent the transmission of flame propagating at supersonic velocity.
In 2010 Néry and his ex- partner [9] Julie Gautier directed a short film called Free Fall, which was watched more than 30 million times. [10] It showed him swimming into Dean's Blue Hole in The Bahamas. Between 2011 and 2012, Néry and Gautier made another short film, Narcosis, directed by Julie Gautier and released in 2014.
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The term metastable free flow means that when small perturbations occur in free flow, the state of free flow is still stable, i.e., free flow persists at the bottleneck. However, when larger perturbations occur in free flow in a neighborhood of the bottleneck, the free flow is unstable and synchronized flow will emerge at the bottleneck.