The symbol for subtraction is the standard minus sign.

The symbol ua is recommended by the International Bureau of Weights and Measures, and the international standard ISO 80000, while au is recommended by the International Astronomical Union, and is more common in Anglosphere countries.

The standard symbol for the arcsecond is the double prime (″) ( U + 2033 ), though a double quote (") ( U + 0022 ) is commonly used where only ASCII characters are permitted.

The symbol for bit, as a unit of information, is either simply " bit " ( recommended by the ISO / IEC standard 80000-13 ( 2008 )) or lowercase " b " ( recommended by the IEEE 1541 Standard ( 2002 )).

* The small calorie or gram calorie ( symbol: cal ) approximates the energy needed to increase the temperature of 1 gram of water by 1 ° C at standard atmospheric pressure ().

However, using a standard encoding such as ASCII is problematic if a symbol such as ' ß ' needs to be converted but is not in the standard.

It was not until 1922 that Alfred W. Porter proposed the symbol " H " as the accepted standard, thus finalizing the terminology still in use today.

The Rankine temperature scale was created to use degree intervals the same size as those of the Fahrenheit scale, such that a temperature difference of one degree Rankine ( 1 R ) is equal to a difference of 1 ° F, except that absolute zero is 0 R – the same way that the Kelvin temperature scale matches the Celsius scale, except that absolute zero is 0 K. The Fahrenheit scale uses ( in the same manner as the later Celsius scale ) the symbol ° to denote a point on the temperature scale and the letter F to indicate the use of the Fahrenheit scale ( e. g. " Gallium melts at 85. 5763 ° F "), as well as to denote a difference between temperatures or an uncertainty in temperature ( e. g. " The output of the heat exchanger experiences an increase of 72 ° F " and " Our standard uncertainty is ± 5 ° F ").

These are, however, shown in ANSI / IEEE 91 ( and 91a ) with this note: " The distinctive-shape symbol is, according to IEC Publication 617, Part 12, not preferred, but is not considered to be in contradiction to that standard.

The labarum () was a vexillum ( military standard ) that displayed the " Chi-Rho " symbol < big >☧</ big >, formed from the first two Greek letters of the word " Christ " (, or Χριστός ) — Chi ( χ ) and Rho ( ρ ).

The symbol used for a resistor in a circuit diagram varies from standard to standard and country to country.

From 104 BC onwards, each legion used an aquila ( eagle ) as its standard symbol.

When a service mark is federally registered, the standard registration symbol ® or " Reg U. S. Pat & TM Off " may be used ( the same symbol is used to mark registered trademarks ).

In statistics and probability theory, standard deviation ( represented by the symbol sigma, σ ) shows how much variation or " dispersion " exists from the average ( mean, or expected value ).

The upside-down A is a standard symbol for the universal quantifier — for all, for each or for every in natural language.

* While SignWriting has a standardized symbol set and a defined character encoding model, SignWriting is not yet part of the Unicode standard.

The torr ( symbol: Torr ) is a non-SI unit of pressure with the ratio of 760 to 1 standard atmosphere, chosen to be roughly equal to the fluid pressure exerted by a millimeter of mercury, i. e., a pressure of 1 torr is approximately equal to one millimeter of mercury.

In introductory physics textbooks, the standard basis vectors are often instead denoted ( or, in which the hat symbol ^ typically denotes unit vectors ).

In Italian, while the letter " W " isn't considered part of the standard Italian alphabet, the character is often used in place of Viva ( hooray for ...), while the same symbol written upside down indicates abbasso ( down with ...).

The standard circulating coinage of the United Kingdom is denominated in pounds sterling ( symbol "£"), and, since the introduction of the two-pound coin in 1998, ranges in value from one penny to two pounds.

ANSI and International Electrotechnical Commission | IEC standard electronic symbol | schematic symbol for a circulator ( with each waveguide or transmission line port drawn as a single line, rather than as a pair of conductors ) A circulator is a passive non-reciprocal three-or four-port device, in which a microwave or radio frequency signal entering any port is transmitted to the next port in rotation ( only ).

Precisely at the moment when it has lost its vision the mind of the community turns out from itself in a search for the ontological standard whereby it can measure itself.

Orders of the day began to specify the standard map for the movement.

They even accept the `` double standard '' of sex morality in a double sense, i.e., both sexes agree that standards for men differ from standards for women, and women apply to both sexes a standard different from that held by men.

Unquestionably Trujillo did some good things for his country: he improved public facilities such as roads and sanitation, attracted industry and investment and raised the standard of living notably.

This condition will undoubtedly continue until such time as a state uniform system of evaluation is established, or through mutual agreement of the local assessing officials for a method of standard assessment practice to be adopted.

undertake economic studies and surveys to determine present and prospective costs of producing water for beneficial consumptive purposes in various parts of the United States by the leading saline water processes as compared with other standard methods.

The estimated standard deviations of the data for two of the resistors were 1 millidegree ; ;

As a first step toward this goal, arrangements were worked out for comparing the scales now in use through circulation of a group of standard platinum resistance thermometers for calibration by each national laboratory.

Perhaps the outstanding standard bearer of Mr. Brown's tradition for accuracy was Mr. Oscar J. Beale, whose mechanical genius closely paralleled that of Mr. Brown, and whose particular forte was the development of the exceedingly accurate measuring machinery that enabled Brown & Sharpe to manufacture gages, and therefore its products, with an accuracy exceeding anything then available elsewhere in the world.

Another growth factor is increased consumer demand for better quality and larger quantities of fabrics that go with a rising standard of living.

Any alteration of one of these factors is distortion, although we generally use that word only for effects so pronounced that they can be stated quantitatively on the basis of standard tests.

Actually, the engine displacement formula is the standard formula for computing the volume of a cylinder of any type with an added factor that represents the number of cylinders in the engine.

The most intriguing aspect of the S & W Magnum chambered for the new Jet is that it can also fire standard

For example, a Browning trap version of the Superposed over/under, the Broadway ( from $350 up, depending on grade ), differs from standard models in that it is equipped with a full beavertail fore end, a cushion recoil pad and a barrel-wide ventilated rib for fast sighting.

Wall panels and structural timbers are standard as are windows and doors, making for a minimum of cutting.

There are standard sliding glass windows in wood or aluminum frames for those panels requiring them.

Practically all bulky housing products can now be ordered in standard units palletized or unitized for mechanical handling -- including lumber, asphalt shingles, glass block, face brick, plaster, lime, hardboard, gypsum wallboard and sheathing, cement, insulation sheathing, floor tile, acoustical tile, plaster base, and asbestos shingles.

Of these, 376 said they make no extra charge for strapping in standard units, because they save enough on mechanized carloading to offset their strapping cost.

Lumber dealers and lumber manufacturers have agreed on a standard unit for unitized shipments -- 48'' '' wide by a nominal 30'' '' high ( or six McCracken packets 24'' '' wide by nominal 7'' '' high ).

Harris has indicated that two devices, the Launder-Ometer and Terg-O-Tometer are most widely used for rapid detergent testing, and he has listed the commercially available standard soiled fabrics.