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Mitre Gate
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a chamber in a permanently fixed position in which the water level can be varied. (In a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls.) Locks are used to make a river more easily navigable, or to allow a canal to cross land that is not level. Over time, more and larger locks have been used in canals to allow a more direct route to be taken. History Ancient Egypt In Ancient Egypt, the river-locks was probably part of the Canal of the Pharaohs: Ptolemy II is credited by some for being the first to solve the problem of keeping the Nile free of salt water when his engineers invented the lock around 274/273 BC. Ancient China During 960–1279 CE, the natural extension of the flash lock, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lock And Cottage On Aylesbury Arm Of Grand Union - Geograph
Lock(s) or Locked may refer to: Common meanings *Lock and key, a mechanical device used to secure items of importance *Lock (water navigation), a device for boats to transit between different levels of water, as in a canal Arts and entertainment *Lock (film), ''Lock'' (film), a 2016 Indian Punjabi-language film *Lock (waltz), a dance figure *The Lock (Constable), ''The Lock'' (Constable), an 1824 painting by John Constable *The Lock (Fragonard), ''The Lock'' (Fragonard) or ''The Bolt'', a 1777 painting by Jean-Honoré Fragonard *Lock (Saga of the Skolian Empire), Lock (''Saga of the Skolian Empire''), a sentient machine in the novels by Catherine Asaro *Locks (album), ''Locks'' (album), by Garnet Crow, 2008 *Locked (film), ''Locked'' (film), a 2024 American thriller *Locked (miniseries), ''Locked'' (miniseries), a 2020 Indian Telugu-language crime thriller *"Locked", a song by Mutha's Day Out from ''My Soul Is Wet'' (1993) * "Locked" (Incorrectly labeled “Gravity” in some pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
