# Important Physics Units for CSS and PMS

**Meter** (m) Length**Kilogram** (kg) Mass**Second** (s) Time**Ampere** (A) Electric current**Kelvin** (K) Thermodynamic temperature**Mole** (mol) Amount of substance**Candela** (cd) Luminous intensity

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**SI Supplementary Units**

**Radian** (rad) Plane angle (2D angle)**Steradian** (sr) Solid angle (3D angle)

**Mechanics**

**Pascal** (Pa) Pressure,Stress**Joule** (J) Energy,Work,Heat**Watt** (W) Power**Newton** (N) Force,Weight

**Electromagnetism**

**Tesla** (T) Magnetic Field**Henry** (H) Inductance**Coulomb **(C) Electric Charge**Volt** (V) Voltage**Farad** (F) Electric Capacitance**Siemens** (S) Electrical Conductance**Weber** (Wb) Magnetic Flux**Ohm** (Ω) Electric Resistance

**Optics**

**Lux** (lx) Illuminance**Lumen** (lm) Luminous Flux**Radioactivity****Becquerel** (Bq) Radioactivity**Gray** (Gy) Absorbed Dose**Sievert** (Sv) Equivalent Dose**Hertz** (Hz) Frequency**Katal** (kat) Catalytic Activity

**Word Definition**

**Aam archaic** unit of liquid measure ranging from 37 to 41 gallons of wine

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**abampere** unit equivalent to 10 amperes**abvolt** unit of electrical potential equal to one hundred millionth of a volt**acre-breadth** old unit of length of 22 yards**ampere** unit for measuring amount of electrical

current**angstrom** unit of one ten-billionth of a meter**arpent** unit of land area slightly smaller than an acre**astronomical** unit unit of distance equal to the distance from the earth to the sun

**bar** unit of pressure of one million dynes per square centimeter**barleycorn** old unit of length equal to one-third inch**barn** unit of area measurement of particles equal to 100 square femtometres**baud** unit of data transmission speed of one signal event per second**bel** unit of noise intensity equal to ten decibels**butt** unit of volume equal to two hogsheads or 126 gallons**calorie** unit of heat or heat-producing value**candela** unit of luminous intensity**carat** unit of weight of precious stones equal to 200 milligrams**centner old** unit of weight equal to about 110 pounds**chain** unit of length equal to 22 yards**chaldron** old unit of dry volume equal to between 32 and 72 bushels**clove** old weight of seven to ten pounds for wool or cheese**cord** unit of wood equal to 128 cubic feet**coulomb** unit of electrical charge of one ampere over period of one second

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**cubit** unit of length equal to 18 inches**curie** unit of radioactive decay and intensity**cusec** unit of liquid flow equal to one cubic foot per second**dalton** unit of atomic mass**darcy** unit of permeability of rock to various substances**dash** non-specific very small unit of measurement used in cooking

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**decibel** unit for measuring sound intensity**denier** unit of yarn fineness**digit** unit of length equal to 3/4 of an inch**dioptre** unit of measurement of power of lens or eye

**dol** unit for measuring intensity of pain**dram** unit of weight equal to 1/16 of an ounce**dyne** unit of force to accelerate 1 gram to 1 cm per second per second**elephant** large unit of paper measurement equal to 28 by 23 inches**ell** old unit of length equal to 45 inches**em** unit of measuring width of type face where width of letters equals height**erg** unit of work measuring force of one dyne applied over one centimeter**face-cord** unit of wood measurement equal to a stack four by eight feet in volume**farad** unit measuring electrical capacitance**fathom** unit of length equal to six feet used to measure depth of water**fermi** unit of length equal to one quadrillionth of a metre fifth unit of measure of liquor equal to one fifth of a gallon

**firkin** old unit of capacity equal to one quarter of a barrel**foot-lambert** unit of luminance of a surface emitting one lumen per square foot**fresnel** unit of optical frequency equal to one terahertz**furlong** unit of distance equal to 220 yards**gal** unit of acceleration of one centimeter per second per second**gamma** unit of magnetic flux density equal to one nanotesla**gauss** unit of magnetic flux density equal to 1/10000 tesla**gilbert** unit of magnetomotive force**gill** unit of liquid volume equal to one-quarter pint**grain** unit of weight equal to 1/7000 of a pound**gray** unit of absorbed dose of ionizing radiation equal to 100 rads**hand** unit for measuring height of horses equal to 4 inches**henry** unit of electrical inductance**hertz** unit of frequency equal to one cycle per second**hide** old unit of land area equal to 120 acres**hobbet** measure of two and a half bushels**hogshead** unit of capacity equal to 63 gallons**horsepower** unit of power equal to 550 foot-pounds of work per second**hundredweight** unit of weight of 100 pounds (112 pounds in UK)**jansky** unit of strength of radio wave emission**jiffy** unit of time used in computing equal to 1/100**second**; any small unit of time**joule** unit of work done by force of one newton over distance of one meter**karat** unit of fineness of gold equal to 1/24 part of pure gold**kelvin** unit of temperature based on absolute zero, equal to 1 degree Celsius**kilderkin** old unit of capacity equal to 1/2 barrel or 18 gallons**kilobase** unit of measure of length of nucleic acid chain equal to 1000 base pairs**kip** unit of weight equivalent to 1000 pounds**lambert** unit of brightness of light**langley** unit of solar radiation

**league** unit of distance of between 2.4 and 4.6 miles**link** unit of length used by surveyors, equal to 7.92 inches**lumen** unit of luminous flux**lux** unit of illumination equal to one lumen per square meter**magneton** unit of the quantized magnetic moment of a particle**maxwell** unit of magnetic flux**mecate** old Mexican measure of about one-tenth of an acre**megadeath** unit of fatality equal to one million deaths**mho** unit of electrical conductance**mil** unit of 1/1000 inch used for measuring thickness of wire**minim** unit of liquid volume equal to 1/480 fluid ounces**mnemon** unit of memory, largely hypothetical**mole** unit of substance equal to number of atoms as 12 grams of carbon-12**morgan** unit of inferred distance between genes on a chromosome**morgen** unit of land area slightly more than two acres**mutchkin** old unit of liquid measurement equal to 3/4 of an imperial pint**nail** old measure of two and a quarter inches**neper** unit for expressing ratio of two currents or voltages**newton** unit of force that accelerates 1 kilogram to 1 meter / second / second**oersted** unit of magnetic field strength**ohm** unit of electrical resistance of circuits**osmol** unit of osmotic pressure**palm** unit of length equivalent to width or length of the hand

**parsec** unit of interstellar distance equal to 3.26 light- years

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**pascal** unit of pressure equal to one newton per square meter**peck** unit of dry measure equal to 8 quarts**pennyweight** unit of troy weight equal to 24 grains**phon** unit of loudness of sound as heard by listeners**photon** unit of brightness of light as received at th retina**pica** unit of typeface equal to about 1/6 of an inch**pipe** unit of liquid capacity equal to two hogsheads**pitch** unit of typeface equal to number of characters per inch**point** unit of typeface equal to 1/72 of an inch**poise** unit of viscosity of liquids

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**pole** unit of area equal to a square rod**pottle** unit of liquid measurement of two quarts, or one-half gallon**poundal** unit of force that accelerates 1 pound to 1 foot/second/second**probit** unit of measurement of statistical probability**quad** unit of energy equal to one quadrillion British thermal units**quarter** unit of weight equal to 28 pounds

**quintal** unit of weight equal to 100 kilograms**quire** unit of 24 sheets of paper**rad** unit of absorbed dose of ionizing radiation**radian** unit of plane angular measurement, approximately 57.3 degrees**rod** unit of length equal to 1/320 of a mile**roentgen** unit of x-radiation or gamma radiation**rood** old unit of land area equal to 1/4 acre**rundlet** old liquid measure equal to about 15 gallons**rutherford** unit of radioactive decay equal to 1 million disintegrations per second**sabin** unit of acoustic absorption of one square foot of a perfect absorber**scruple** unit of weight used by apothecaries equal to 1/24 of an ounce**shake** unit of one hundred millionth of a second used to measure nuclear processes**siemens** unit of electrical conductance equivalent to one ampere per volt**slug** unit of the gravitational mass of approximately 32.174 pounds**sone** unit of loudness on a scale based on subjective or perceived loudness**span** unit of distance equal to handspread or nine inches**stack** old unit of measure for firewood equal to 108 cubic feet

**stone** unit of weight equal to 14 pounds**svedberg** unit of time used to measure sedimentation velocity

**tesla** unit of magnetic flux density equal to one weber per square meter**tex** unit of measurement of fineness of fibres and yarn**therblig** unit of work for quantifying industrial operations**therm** unit of quantity of heat equal to 100,000 British thermal units

**thirdendeal** old liquid measure of three pints; one-third of anything

**tod** old unit of weight of wool equal to 28 pounds**tog** unit of measurement for insulation properties of fabric(Important Physics Units for CSS)**ton** unit of cooling power equal to 12,000 BTU per hour**torr** unit of pressure equal to 1/760 of standard atmospheric pressure**tun** unit of liquid capacity of 252 gallons**vara** unit of linear measure of between 33 and 43 inches**verst** unit of distance equal to approximately 2/3 of a mile**virgate **old unit of land area usually equal to 30 acres or 1/4 hide**volt** unit of electrical potential difference and electromotive force (Important Physics Units for CSS)

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**watt** unit of power equal to one joule per second**weber** unit of magnetic flux equal to 100 million maxwells**wey** old measure for dry goods usually equal to 40 bushels**yardland** unit of land area equal to 30 acres (Important Physics Units for CSS)**yrneh** unit of reciprocal inductance**zolotnik** old Russian unit of weight equal to 1/6 of an ounce