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measurement

measurement


meas·ure·ment  (mzhr-mnt)
n.
1. The act of measuring or the process of being measured.
2. A system of measuring: measurement in miles.
3. The dimension, quantity, or capacity determined by measuring: the measurements of a room.

Conversion From U.S. Customary to Metric units

When You KnowMultiply ByTo Find
inches25.4millimeters
 2.54centimeters
feet30.48centimeters
yards0.91meters
miles1.61kilometers
teaspoons4.93milliliters
tablespoons14.79milliliters
fluid ounces29.57milliliters
cups0.24liters
pints (liquid)0.47liters (liquid)
quarts (liquid)0.95liters (liquid)
gallons3.79liters
cubic feet0.028cubic meters
cubic yards0.76cubic meters
ounces28.35grams
pounds0.45kilograms
short tons (2,000 lbs)0.91metric tons
square inches6.45square centimeters
square feet0.09square meters
square yards0.84square meters
square miles2.60square kilometers
acres0.40hectacres

From Metric to U.S. Customary Units

When You KnowMultiply ByTo Find
millimeters0.04inches
centimeters0.39inches
meters3.28feet
 1.09yards
kilometers0.62miles
milliliters0.20teaspoons
 0.06tablespoons
 0.03fluid ounces
liters (liquid)1.06quarts (liquid)
 0.26gallons
 4.23cups
 2.12pints (liquid)
cubic meters35.32cubic feet
 1.35cubic yards
grams0.035ounces
kilograms2.21pounds
metric ton (1,000 kg)1.10short ton
square centimeters0.16square inches
square meters1.20square yards
square kilometers0.39square miles
hectacres2.47acres

Temperature Conversion Between Celsius and Fahrenheit

°C = (°F - 32) ? 1.8
°F = (°C ? 1.8) + 32

ConditionFahrenheitCelsius
Boiling point of water212°100°
A very hot day104°40°
Normal body temperature98.6°37°
A warm day86°30°
A mild day68°20°
A cool day50°10°
Freezing point of water32°
Lowest temperature Gabriel Fahrenheit could obtain by mixing salt and ice-17.8°

U.S. Customary System: Length

UnitRelation to Other U.S. Customary UnitsMetric Equivalent
inch1/12 foot2.54 centimeters
foot12 inches or 1/3 yard0.3048 meter
yard36 inches or 3 feet0.9144 meter
rod16 1/2 feet or 5 1/2 yards5.0292 meters
furlong220 yards or 1/8 mile0.2012 kilometer
mile (statute)5,280 feet or 1,760 yards1.6093 kilometers
mile (nautical)2,025 yards1.852 kilometers

U.S. Customary System: Volume or Capacity (Liquid Measure)

UnitRelation to Other U.S. Customary UnitsMetric Equivalent
ounce1/16 pint29.574 milliliters
gill4 ounces0.1183 liter
pint16 ounces0.4732 liter
quart2 pints or 1/4 gallon0.9463 liter
gallon128 ounces or 8 pints3.7853 liters
barrel  
(wine)31 1/2 gallons119.24 liters
(beer)36 gallons136.27 liters
(oil)42 gallons158.99 liters

U.S. Customary System: Volume or Capacity (Dry Measure)

UnitRelation to Other U.S. Customary UnitsMetric Equivalent
pint1/2 quart0.5506 liter
quart2 pints1.1012 liters
peck8 quarts or 1/4 bushel8.8098 liters
bucket2 pecks17.620 liters
bushel2 buckets or 4 pecks35.239 liters

U.S. Customary System: Weight

UnitRelation to Other U.S. Customary UnitsMetric Equivalent
grain1/7000 pound64.799 milligrams
dram1/16 ounce1.7718 grams
ounce16 drams28.350 grams
pound16 ounces453.6 grams
ton (short)2,000 pounds907.18 kilograms
ton (long)2,240 pounds1,016.0 kilograms

U.S. Customary System: Geographic Area

UnitRelation to Other U.S. Customary UnitsMetric Equivalent
acre4,840 square yards4,047 square meters

Cooking Measures

UnitRelation to Other Cooking MeasuresConversion to Metric Units
drop1/76 teaspoon0.0649 milliliter
teaspoon76 drops or 1/3 tablespoon4.9288 milliliters
tablespoon3 teaspoons14.786 milliliters
cup16 tablespoons or 1/2 pint0.2366 liter
pint2 cups0.4732 liter
quart4 cups or 2 pints0.9463 liter

British Imperial System: Volume or Capacity (Liquid Measure)

UnitRelation to Other British Imperial UnitsConversion to U.S. Customary UnitsConversion to Metric Units
pint1/2 quart1.201 pints0.5683 liter
quart2 pints or 1/4 gallon1.201 quarts1.137 liters
gallon8 pints or 4 quarts1.201 gallons4.546 liters

British Imperial System: Volume or Capacity (Dry Measure)

UnitRelation to Other British Imperial UnitsConversion to U.S. Customary UnitsConversion to Metric Units
peck1/4 bushel1.0320 pecks9.092 liters
bushel4 pecks1.0320 bushels36.369 liters

Apothecary Weights

UnitRelation to Other Apothecary UnitsConversion to U.S. Customary UnitsConversion to Metric Units
grain160 dram or 1/5760 poundequal to the U.S. Customary grain64.799 milligrams
dram60 grains or 1/8 ounce2.1943 drams3.8879 grams
ounce8 drams1.0971 ounces31.1035 grams
pound12 ounces or 96 drams0.8232 pound373.242 grams

Units of the International System

The International System (abbreviated SI, for Systeme International, the French name for the system) was adopted in 1960 by the 11th General Conference on Weights and Measures. An expanded and modified version of the metric system, International System addresses the needs of modern science for additional and more accurate units of measurement. The key features of the International System are decimalization, a system of prefixes, and a standard defined in terms of an invariable physical measure.

Base Units

The International System has base units from which all others in the system are derived. The standards for the base units, except for the kilogram, are defined by unchanging and reproducible physical occurences. For example, the meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. The standard for the kilogram is a platinum-iridium cylinder kept at the International Bureau of Weights and Standards in S?vres, France.

UnitQuantity Symbol
meter length m
kilogram mass kg
second time s
ampere electric current A
kelvin temperature K
mole amount of matter mol
candela luminous intensity cd

Supplementary Units

The International System uses two supplementary units that are based on abstract geometrical concepts rather than physical standards.

UnitQuantitySymbol
radian plane angles rad
steradian solid angles sr

Prefixes

A multiple of a unit in the International System is formed by adding a prefix to the name of that unit. The prefixes change the magnitude of the unit by orders of ten from 1024 to 10-24.

PrefixSymbolMultiplying Factor
yotta- Y 1024 = 1,000,000,000,000,000,000,000,000
zetta- Z 1021 = 1,000,000,000,000,000,000,000
exa- E 1018 = 1,000,000,000,000,000,000
peta- P1015 = 1,000,000,000,000,000
tera- T 1012 = 1,000,000,000,000
giga- G 109 = 1,000,000,000
mega- M 106 = 1,000,000
kilo- K 103 = 1,000
hecto- h 102 = 100
deca- da 10 = 10
deci- d 10-1 = 0.1
centi- c 10-2 = 0.01
milli- m 10-3 = 0.001
micro- 10-6 = 0.000,001
nano- n 10-9 = 0.000,000,001
pico- p 10-12 = 0.000,000,000,001
femto- f 10-15 = 0.000,000,000,000,001
atto- a 10-18 = 0.000,000,000,000,000,001
zepto- z 10-21 = 0.000,000,000,000,000,000,001
yocto- y 10-24 = 0.000,000,000,000,000,000,000,001

Additional Units

Listed below are a few of the non-SI units that are commonly used with the International System.

UnitQuantitySymbol
angstrom (= 10-10m) length ?
electron-volt (= 0.160 aJ) energy eV
hectare (= 10,000 m2) land area ha
liter (= 1.0dm3)volume or capacity l
standard atmosphere (= 101.3 kPa) pressure atm

Derived Units

Most of the units in the International System are derived units, that is units defined in terms of base units and supplementary units. Derived units can be divided into two groups - those that have a special name and symbol, and those that do not.

Without Names and Symbols
Measure ofDerivation
acceleration m/s2
angular acceleration rad/s2
angular velocity rad/s
density kg/m3
electric field strength V/m
luminance cd/m2
magnetic field strength A/m
velocity m/s

With Names and Symbols
UnitMeasure ofSymbolDerivation
coulomb electric charge C A·s
farad electric capacitance F A·s/V
henry inductance H V·s/A
hertz frequency Hz cycles/s
joule quantity of energy J N·m
lumen flux of light lm cd·sr
lux illumination lx lm/m2
newton force N kg·m/s2
ohm electric resistance V/A
pascal pressure Pa N/m2
tesla magnetic flux density T Wb/m2
volt voltage V W/A
watt power W J/s
weber magnetic flux Wb V·s

Copyright © 2000 by Houghton Mifflin Company


measurement [ˈmɛʒəmənt]
n
1. the act or process of measuring
2. an amount, extent, or size determined by measuring
3. a system of measures based on a particular standard

measurement  (mzhr-mnt)
A method of determining quantity, capacity, or dimension. Several systems of measurement exist, each one comprising units whose amounts have been arbitrarily set and agreed upon by specific groups. While the United States Customary System remains the most commonly used system of measurement in the United States, the International System is accepted all over the world as the standard system for use in science.
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measurement


measurement  /mrmnt/  n. [C;U] a determination of the size, weight, speed, etc., of s.t.: A tailor took the mans measurements for a new suit.

Thesaurus: measurement n.pl. dimensions, size | configuration frml. measurement

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