** Some kinds of helicity are conserved in dissipationless limit: hydrodynamical helicity, magnetic helicity, cross-helicity.

** The set of infinite strings is the inverse limit of the set of finite strings, and is thus endowed with the limit topology.

** One-sided limit

** Limit superior and limit inferior

** Direct limit and Inverse limit

** Chandrasekhar limit

** Greisen – Zatsepin – Kuzmin limit

** Speed limit

** The high-frequency limit of the hearing range

** Engine piston rings changed to limit oil consumption and pistons changed to strengthen skirt area.

** A Line reactor is used to limit starting current of motors and to protect variable frequency drives

** The United States Senate adopts the cloture rule in order to limit filibusters.

** The first speed limit is introduced in Britain: in town and in the country.

** A speed limit is imposed on British roads.

** See more fully the discussion in Dennis J. Baker, The Right Not to be Criminalized: Demarcating Criminal Law's Authority ( Ashgate, 2011 < http :// www. ashgate. com / isbn / 9781409427650 >) where Professor Baker argues ( in chapter 5 ) that there is a limit to consensual harm doing — but that the threshold of harm has to be reasonably high.

** Lower limit: 70-80 modal ( bass ), 30-40 creaky

** Upper limit: 1170 ( soprano )

** Railroad adze-A carpenter's adze which had its bit extended in an effort to limit the breaking of handles when shaping railroad ties ( railway sleepers ).

** Lyapunov's central limit theorem

** serum creatinine ≥ 2 times the upper limit of normal for age or 2-fold increase in baseline creatinine in patients with chronic kidney disease

** alanine aminotransferase ( ALT ) ≥ 2 times the upper limit of normal

** A lossless " PCM macroblock " representation mode in which video data samples are represented directly, allowing perfect representation of specific regions and allowing a strict limit to be placed on the quantity of coded data for each macroblock.

** In order theory, see order automorphism.

** Diego and Jaquez in The Castle of Otranto – they appear to talk about random things, and argue foolishly with each other in order to lighten the air of the novel.

** The three pilgrimage festivals are always reckoned as coming in the order Passover-Shavuot-Sukkot.

** iubeō, iubēre, iussī, iussus ( to order, to bid )

** M. C. Escher used special shapes of mirrors in order to achieve a much more complete view of his surroundings than by direct observation in Hand with Reflecting Sphere ( also known as Self-Portrait in Spherical Mirror ).

** Self-focusing, an effect due to the Optical Kerr effect ( and possibly higher order nonlinearities ) caused by the spatial variation in the intensity creating a spatial variation in the refractive index

** Self-phase modulation ( SPM ), an effect due to the Optical Kerr effect ( and possibly higher order nonlinearities ) caused by the temporal variation in the intensity creating a temporal variation in the refractive index

** State consequentialism or Mohist consequentialism, which holds that an action is right if it leads to state welfare, through order, material wealth, and population growth

** Bandwidth management and traffic shaping, in order to smooth down peaks in network usage ;

** Shooting of the Romanov family: By order of the Bolshevik Party and carried out by the Cheka, Tsar Nicholas II, his wife Alexandra Feodorovna, their children, Olga, Tatiana, Maria, Anastasia, and Alexei, and retainers are executed at the Ipatiev House in Ekaterinburg, Russia.

** Hitler advises Jozef Tiso to declare Slovakia's independence in order to prevent its partition by Hungary and Poland.

** Aaron Montgomery Ward, American businessman, inventor of mail order ( b. 1844 )

** President Franklin D. Roosevelt signs executive order 9066 allowing the United States military to define areas as exclusionary zones.

** Holocaust: By order of the Vichy France government headed by Pierre Laval, French police officers round-up 13, 000 – 20, 000 Jews and imprison them in the Winter Velodrome.

** President of Bulgaria Petar Mladenov resigns over charges he order tanks to disperse antigovernment protests in December 1989.

** The Interstate Commerce Commission's federal order banning segregation at all interstate public facilities officially comes into effect.

** Peter Hans Kolvenbach, Dutch Superior General of the Society of Jesus, the largest male religious order of the Catholic Church

** American Civil War: In order to help pay for the war effort, the United States government issues the first income tax as part of the Revenue Act of 1861 ( 3 % of all incomes over US $ 800 ; rescinded in 1872 ).

** Baker v. Carr: The U. S. Supreme Court rules that federal courts can order state legislatures to reapportion seats.

** C. Laan brings order to the chaos created by the dockworker riots of Tripoli, Lebanon.

** The U. S. Army issued an order for the abandonment of Fort Kearny, Nebraska.