The unit of measurement for enthalpy in the International System of Units ( SI ) is the joule, but other historical, conventional units are still in use, such as the British thermal unit and the calorie.

A similar system is used in natural gas sales in the United States: m ( or M ) for thousands and mm ( or MM ) for millions of British thermal units or therms, and in the oil industry, where ' MMbbl ' is the symbol for ' millions of barrels '.

The gun is made from high strength Electro Slag Remelting ( ESR ) steel with a chromium alloy lining and, like earlier British 120 mm guns, it is insulated by a thermal sleeve.

# REDIRECT British thermal unit

* British thermal unit ( Btu )

In the United States, R-values are customarily given in units of British thermal units per hour per square-foot degrees Fahrenheit ( Btu / h · ft² ·° F ).

More common is the British thermal unit, the standard unit of heat in the U. S. construction industry.

Other hardware components were supplied as follows: the beam-combining mirror from REOSC at Saint Pierre du Perray ; the spherical, folding and relay mirrors from Carl Zeiss AG in Oberkochen ; the external straylight baffles from CASA in Madrid ; the modulating grid from CSEM in Neuchatel ; the mechanism control system and the thermal control electronics from Dornier Satellite Systems in Friedrichshafen ; optical filters, the experiment structures and the attitude and orbit control system from Matra Marconi Space in Velizy ; instrument switching mechanisms from Oerlikon-Contraves in Zurich ; the image dissector tube and photomultiplier detectors assembled by the Dutch Space Research Organisation, SRON in The Netherlands ; the refocusing assembly mechanism designed by TNO-TPD in Delft ; the electrical power subsystem from British Aerospace in Bristol ; the structure and reaction control system from Daimler-Benz Aerospace in Bremen ; the solar arrays and thermal control system from Fokker Space System in Leiden ; the data handling and telecommunications system from Saab Ericsson Space in Gothenburg ; and the apogee boost motor from SEP in France.

The June 2009 issue of the SGS Softlines publication provides more information about the British Standard, stating that it specifies minimum children's sleep bag safety requirements for chemical hazards, thermal hazards and insulation, entanglement, choking and suffocation hazards, structural integrity and flammability, and shows an example of a baby sleep bag.

Energy efficiency is similar to fuel efficiency but the input is usually in units of energy such as British thermal units ( BTU ), megajoules ( MJ ), gigajoules ( GJ ), kilocalories ( kcal ), or kilowatt-hours ( kW · h ).

* Quad ( energy ), a unit of energy ( short for quadrillion ) defined as 10 < sup > 15 </ sup > British thermal units ( about 1. 055 exajoule ( EJ ) or 1. 055 × 10 < sup > 18 </ sup > J )

# Redirect British thermal unit

Natural gas in the U. S. is measured in CCF ( 100 cubic feet ), which is converted to a standardized heat content unit called the therm, equal to 100, 000 British thermal units ( BTU ).

# REDIRECT British thermal unit

The therm ( symbol thm ) is a non-SI unit of heat energy equal to 100, 000 British thermal units ( BTU ).

The gas composition must be considered, because natural gas appliances are designed for gas with a heating value of about 1000 BTU ( British thermal units ) per cubic foot, or nearly pure methane.

In 1837 he visited the United States and acquired there the materials for papers on the thermal springs and the geology of North America, read in 1838 before the Ashmolean Society and the British Association ( and published in 1839 ).

Where other fuels are not available, it is sometimes referred to as the unit cost per unit ( BTU = British thermal unit or BTUH / h per hour ), and can be less than other fuels.

# REDIRECT British thermal unit

" The combination of laser-guided bombs from F-111F's and F-15E's, together with Maverick missiles using imaging infrared thermal sensors fired by A-10's and F-16's were devastating, as were laser-guided bombs from British Tornadoes and Buccaneers, and AS-30L laser-guided missiles fired from French Air Force Jaguars.

# REDIRECT British thermal unit

The first ( from 1939 ) gives the capacity as " about half a million British thermal units per hour.

* British thermal unit

The British Churchill tank because of its good cross-country performance and capacious interior with side hatches became the most adapted with modifications, the base unit being the AVRE carrying a large demolition gun.

The base unit and handset of a British Telecom DECT cordless telephone

This unit had provided Rommel with priceless intelligence, gleaned from intercepting British radio communications.

The Virginia Regiment was the first full-time American military unit in the colonies ( as opposed to part-time militias and the British regular units ).

He was embarrassed by a friendly fire episode in which his unit and another British unit thought the other was the French enemy and opened fire, with 14 dead and 26 wounded in the mishap.

* Virgin Trains British Rail Class 221 unit 221129 is named in his honour.

" The head of the British army at the time, General Sir Richard Dannatt, first said on 30 April 2007 that he had personally decided that the Prince would serve with his unit in Iraq, and Harry was scheduled for deployment in May or June 2007, to patrol the Maysan province.

* Imperial Camel Corps, an historic British Commonwealth military unit

At that time, the British also supported the creation and the training of Palmach, as a unit that could withstand a German offensive in the area, with the consent of Yishuv which saw an opportunity to get trained units and soldiers for the planned Jewish state and during 1944-1945, the most mainstream Jewish para-military organization, Haganah, cooperated with the British authorities against the Lehi and Etzel.

Also, National Express East Anglia named a British Rail Class 153 ( unit number 153335 ) after him.

While the CIA Factbook in 2006 stated that the " US is the only industrialized nation that does not mainly use the metric system ", ( in addition to non-industrialised Burma / Myanmar, Liberia ), the actual situation, however, is more complicated than the CIA Factbook would suggest-in the United Kingdom, for example, although metric is the official system for most regulated trading by weight or measure purposes, the pint is the official unit for milk in returnable bottles and for draught beer and cider in British pubs, and miles, yards and feet remain the official units for road signage.

In 1802, the British became the first foreign power to raise a regular unit of Sinhalese with British officers, which was named the 2nd Ceylon Regiment, also known as the Sepoy Corps. It fought alongside British troops in the Kandyan wars.

* Mobile Meteorological Unit, a deployable weather forecasting support unit of the British Armed Forces

In June 1845 75 members of the Auckland Militia under Lieutenant Figg became the first unit to support British Imperial troops in the Flagstaff War, serving as pioneers.

* 1969 – The United Kingdom introduces the British fifty-pence coin, which replaces, over the following years, the British ten-shilling note, in anticipation of the decimalization of the British currency in 1971, and the abolition of the shilling as a unit of currency anywhere in the world.

The Queen Mary has long been a symbol of speed, luxury, and impeccable British service on the high seas.

The club's name is often invoked as a symbol of British sport's legion of plucky but hopeless causes.

In 1994, journalist Richard Gott described the prize as " a significant and dangerous iceberg in the sea of British culture that serves as a symbol of its current malaise.

* bmi, trading symbol for British Midland International, an airline of the United Kingdom

Iodine (,, or in both American and British English ) is a chemical element with symbol I and atomic number 53.

Under the London Declaration, India agreed that, when it became a republic in January 1950, it would join the Commonwealth of Nations and accept the British monarch as a " symbol of the free association of its independent member nations and as such the Head of the Commonwealth ".

Sulfur ( ) or sulphur ( British English ; see spelling below ) is a chemical element with symbol S and atomic number 16.

And whereas it is meet and proper to set out by way of preamble to this Act that, inasmuch as the Crown is the symbol of the free association of the members of the British Commonwealth of Nations, and as they are united by a common allegiance to the Crown, it would be in accord with the established constitutional position of all the members of the Commonwealth in relation to one another that any alteration in the law touching the Succession to the Throne or the Royal Style and Titles shall hereafter require the assent as well of the Parliaments of all the Dominions as of the Parliament of the United Kingdom:

The Trucial Oman Scouts, long the symbol of public order on the coast and commanded by British officers, were turned over to the United Arab Emirates as the nucleus of its defence forces in 1971.

One outcome of this is that the machine had some keyboard keys and characters that were distinctly British: " Newline " was used instead of " Enter ", " Rubout " instead of " Backspace " or " Delete ", and the character set and keyboard included the Pound symbol, relatively unusual for its day.

To 18th-century British abolitionists, he became a symbol of the humanity of Africans and immorality of the slave trade.

Novelist James Joyce noted that the true symbol of the British conquest is Robinson Crusoe: " He is the true prototype of the British colonist.

In American English, the symbol is usually called the pound sign ( outside the US, this term often describes instead the British currency symbol "£") and the telephone key is called the pound key.

Some political parties use lightning flashes as a symbol of power, such as the People's Action Party in Singapore and the British Union of Fascists during the 1930s.

There is also a story that, after his victory at Dungeness, Tromp attached a broom to his mast as a symbol that he had swept the British from the sea.

The following year, the British admiral Blake supposedly attached a whip to his mast as a symbol that he had whipped the Dutch off the sea.

It is also claimed that Aborigines and Australians of Irish origin see the Australian Crown as a symbol of British imperialism.

Nancy Holmes, professor at the University of British Columbia, speculated that its patriotic nature and usage as a tool for propaganda may have led literary critics to view it as a national symbol or anthem rather than a poem.

Bede explains how each of the four Evangelists was represented by their own symbol: Matthew was the man, representing the human Christ, Mark was the lion, symbolizing the triumphant Christ of the Resurrection, Luke was the calf, symbolizing the sacrificial victim of the Crucifixion, and John was the eagle, symbolizing Christ ’ s second coming ( The British Library Board ).

Sometimes the differences were very minor, such as extra local language characters and symbols printed on certain keycaps ( e. g. French accented characters on Canadian IIe such as " á ", " é ", " ç ", etc., or the British Pound "£" symbol on the UK IIe ) while other times the layout and shape of keys greatly differed ( e. g. European IIe ).

The square metre ( British spelling ) or square meter ( American spelling ) is the SI derived unit of area, with symbol m < sup > 2 </ sup > ( 33A1 in Unicode ).