طبعي مقدارن جي فهرست
ھي آرٽيڪل جدولن تي مشتمل آھي جيڪو ڪجھ طبعي مقدارن کي بيان ڪري ٿو. پهرين جدول ۾ بنيادي مقدارن جي فهرست ڏني وئي آهي جيڪي يونٽن جي بين الاقوامي نظام ۾ طبعي مقدار جي طبعي ابعاد (dimension) جي تجزيي لاء استعمال ٿيل آهن. ٻئي جدول ۾ نڪتل طبعي مقدارن جي فهرست ڏنل آهي. حاصل ڪيل مقدار کي بنيادي مقدار جي لحاظ کان بيان ڪري سگهجي ٿو.
ياد رهي ته طبعي مقدار لاءِ استعمال ٿيل نه ته نالا ۽ نشان بين الاقوامي معيار جا آهن. ڪجهه مقدار ڪيترن ئي مختلف نالن سان سڃاتا ويندا آهن جهڙوڪ مقناطيسي B-فيلڊ جنهن کي، مقناطيسي فيلڊ جي حوالي سان، مقناطيسي وهڪري جي کثافت، مقناطيسي انڊڪشن يا صرف مقناطيسي فيلڊ طور سڃاتو وڃي ٿو. ساڳيءَ طرح، مٿاڇري جي ٽينشن کي σ، γ يا T جي ذريعي ظاهر ڪري سگھجي ٿو. جدول ۾ عام طور تي صرف ھڪڙو نالو ۽ علامت ڏنل آھي جيڪو عام طور تي استعمال ڪيو ويندو آھي. آخري ڪالمن ۾ ڪجهه خاص خاصيتون شامل آهن جيڪي ڪجهه مقدار ۾ آهن، جهڙوڪ انهن جي ماپ ڪرڻ واري رويي (يعني مقدار شديد يا وسيع آهي)، انهن جي تبديلي جي ملڪيت (يعني ڇا مقدار هڪ اسڪيلر، ویکٹر، ميٽرڪس يا ٽينسر آهي) ۽ ڇا مقدار محفوظ آهي.
بنيادي مقدار | علامت | حلیو/وصف | SI بنيادي يونٽ | ابعاد (Dimension) | تبصرا |
---|---|---|---|---|---|
مادي جو مقدار | n | مقدار هڪ نموني ۾ ذرڙن جي تعداد سان متناسب، ایووگيڊرو مستقل سان تناسب مسلسل | مول (mol) | N | وسیع، غیر سمتی |
ڊگھائي | l | ڪنهن شئي جي هڪ طرفي حد | ميٽر (m) | L | وسيع |
وقت | t | ڪنهن واقعي جو عرصو | سیڪنڊ (s) | T | غیر سمتی، وسیع، تیز |
ڪميت | m | تيز رفتاري جي مزاحمت جو ماپ | ڪلوگرام (kg) | M | وسيع، غیر سمتی |
گرمي جي پد | T | نظام جي سراسري حرڪی توانائي في درجي جي آزادي | ڪيلون (K) | Θ or [K] | غیر سمتی، وسیع |
بجليء جو ڪرنٽ | I | في يونٽ وقت م برقي چارج جي وهڪري جي شرح | ايمپيئر (A) | I | وسيع، اسڪیلر |
ڪنڊ | ∠ | ٻن شعاعن مان ٺهيل شڪل، جنهن کي زاويه جي پاسن کي سڏيو وڃي ٿو، هڪ گڏيل آخر واري نقطي کي شيئر ڪري ٿو، جنهن کي زاوي جي چوٽي (Vortex) سڏيو ويندو آهي. درجو. | ڊگري (°) | ∠ BAC | وسیع، اسڪیلر (غیر سمتی) |
روشنيءَ جي شدت | Iv | في يونٽ زاويه تي خارج ٿيل روشني جي موج جي وزن واري طاقت | ڪينڊيلا (cd) | J | اسڪیلر (غیر سمتی) |
Absement | A | Measure of sustained displacement: the first integral with respect to time of displacement | m⋅s | L T | vector |
Absorbed dose rate | D | Absorbed dose received per unit of time | Gy/s | L2 T−3 | |
اسراع | a | في اڪائي وقت ۾ رفتار جي تبديلي جي شرح؛ پوزيشن جو ٻيو ڀيرو نڪتل ٽائيم ڊيريويٽيو | m/s2 | L T−2 | vector |
Action | S | Momentum of particle multiplied by distance travelled | J/Hz | L2 M T−1 | scalar |
Angular acceleration | ωa | Change in angular velocity per unit time | rad/s2 | T−2 | |
Angular momentum | L | Measure of the extent and direction of an object rotates about a reference point | kg⋅m2/s | L2 M T−1 | conserved, bivector |
Angular velocity | ω | The angle incremented in a plane by a segment connecting an object and a reference point per unit time | rad/s | T−1 | bivector |
Area | A | Extent of a surface | m2 | L2 | extensive, bivector or scalar |
Area density | ρA | Mass per unit area | kg⋅m−2 | L−2 M | intensive |
برقي
گنجائش |
C | ذخيرو ٿيل چارج في يونٽ برقي صلاحيت | farad (F = C/V) | L−2 M−1 T4 I2 | scalar |
عمل انگيز جي سرگرمي جي ڪنسنٽريشن | سسٽم جي في يونٽ حجم ۾ ڪيٽالسٽ جي موجودگي جي ڪري، ڪيميائي تعمل جي شرح ۾ تبديلي | kat⋅m−3 | L−3 T−1 N | intensive | |
مرڪز مائل قوت | Fc | جمودي قوت جيڪا ظاهر ٿئي ٿي ته سڀني شين تي عمل ڪندي جڏهن حوالن جي گھمڻ واري فريم ۾ ڏٺو وڃي | N⋅rad = kg⋅m⋅rad⋅s−2 | L M T−2 | bivector |
ڪيميائي صلاحيت | μ | توانائي جي مقدار في يونٽ مادي جي مقدار ۾ تبديلي تي | J/mol | L2 M T−2 N−1 | intensive |
Crackle
ڪريڪل |
سانچو:Vec | في يونٽ وقت جي اچ وڃ جي تبديلي: پوزيشن جو پنجون وقت نڪتل derivative | m/s5 | L T−5 | vector |
برقي ڪرنٽ جي کثافت | سانچو:Vec | اليڪٽرڪ ڪرنٽ في يونٽ ڪراس-سيڪشن ايريا | A/m2 | L−2 I | conserved, intensive, vector |
Dose equivalent
دوز برابر. حاصل ڪيل تابڪاري حياتياتي بافتن تي اثر لاءِ ترتيب ڏني وئي |
H | Received radiation adjusted for the effect on biological tissue | sievert (Sv = J/kg) | L2 T−2 | intensive |
Dynamic viscosity
متحرڪ وسڪوسٽي viscosity. دٻاء لاء ناقابل برداشت سيال جي مزاحمت لاء ماپ |
v | Measure for the resistance of an incompressible fluid to stress | Pa⋅s | L−1 M T−1 | intensive |
Electric charge
برقي چارج. قوت في يونٽ برقي ميدان جي طاقت |
Q | The force per unit electric field strength | coulomb (C = A⋅s) | T I | extensive, conserved |
Electric charge density
برقي چارج جي کثافت. اليڪٽرڪ چارج في يونٽ حجم |
ρQ | Electric charge per unit volume | C/m3 | L−3 T I | intensive |
Electric dipole moment
اليڪٽرڪ ڊائيپول مومينٽ برابر ۽ مخالف برقي چارجز جي جدائي جي ماپ. |
p | Measure of the separation of equal and opposite electric charges | C⋅m | L T I | vector |
Electric displacement field
اليڪٽرڪ برقي مفاصلي جو ميدان. بجلي جي بي گھرڻ جي طاقت |
سانچو:Vec | Strength of the electric displacement | C/m2 | L−2 T I | vector field |
Electric field strength
برقي ميدان جي طاقت. بجلي جي ميدان جي طاقت |
سانچو:Vec | Strength of the electric field | V/m, N/C | L M T−3 I−1 | vector field |
Electrical conductance
بجلي جي چال. ماپ ڪريو ته ڪيئن آسانيءَ سان ڪرنٽ ڪنهن مادي ذريعي وهي ٿو. |
G | Measure for how easily current flows through a material | siemens (S = Ω−1) | L−2 M−1 T3 I2 | scalar |
Electrical conductivity
برقي چالکائي. اليڪٽرڪ ڪرنٽ کي هلائڻ لاءِ مواد جي صلاحيت جي ماپ |
σ | Measure of a material's ability to conduct an electric current | S/m | L−3 M−1 T3 I2 | scalar |
Electric potential
برقي صلاحيت. توانائي جي ضرورت آهي هڪ يونٽ چارج کي هڪ ريفرنس پوائنٽ کان برقي فيلڊ ذريعي منتقل ڪرڻ لاء. 26. برقي مزاحمت. بجلي جي صلاحيت في يونٽ برقي موجوده. 27. برقي مزاحمت. بلڪ ملڪيت برقي مزاحمت جي برابر |
φ | Energy required to move a unit charge through an electric field from a reference point | volt (V = J/C) | L2 M T−3 I−1 | extensive, scalar |
Electrical resistance | R | Electric potential per unit electric current | ohm (Ω = V/A) | L2 M T−3 I−2 | extensive, scalar, assumes linearity |
Electrical resistivity | ρe | Bulk property equivalent of electrical resistance | ohm-metre (Ω⋅m) | L3 M T−3 I−2 | extensive, scalar, conserved |
Energy
توانائي |
E | Energy | joule (J) | L2 M T−2 | |
Energy density
توانائي جي کثافت. توانائي في اڪائي حجم |
? | Energy per volume | J⋅m−3 | L−1 M T−2 | intensive |
Entropy | S | Logarithmic measure of the number of available states of a system | J/K | L2 M T−2 Θ−1 | extensive, scalar |
Force | سانچو:Vec | Transfer of momentum per unit time | newton (N = kg⋅m⋅s−2) | L M T−2 | extensive, vector |
Frequency | f | Number of (periodic) occurrences per unit time | hertz (Hz = s−1) | T−1 | scalar |
Half-life | t1/2 | Time for a quantity to decay to half its initial value | s | T | |
Heat | Q | Thermal energy | joule (J) | L2 M T−2 | |
Heat capacity | Cp | Energy per unit temperature change | J/K | L2 M T−2 Θ−1 | extensive |
Heat flux density | ϕQ | Heat flow per unit time per unit surface area | W/m2 | M T−3 | |
Illuminance | Ev | Wavelength-weighted luminous flux per unit surface area | lux (lx = cd⋅sr/m2) | L−2 J | |
Impedance | Z | Resistance to an alternating current of a given frequency, including effect on phase | ohm (Ω) | L2 M T−3 I−2 | complex scalar |
Impulse | J | Transferred momentum | newton-second (N⋅s = kg⋅m/s) | L M T−1 | vector |
Inductance | L | Magnetic flux generated per unit current through a circuit | henry (H) | L2 M T−2 I−2 | scalar |
Irradiance | E | Electromagnetic radiation power per unit surface area | W/m2 | M T−3 | intensive |
Intensity | I | Power per unit cross sectional area | W/m2 | M T−3 | intensive |
Jerk | سانچو:Vec | Change of acceleration per unit time: the third time derivative of position | m/s3 | L T−3 | vector |
Jounce (or snap) | سانچو:Vec | Change of jerk per unit time: the fourth time derivative of position | m/s4 | L T−4 | vector |
Linear density | ρl | Mass per unit length | kg⋅m−1 | L−1 M | |
Luminous flux (or luminous power) | F | Perceived power of a light source | lumen (lm = cd⋅sr) | J | |
Mach number (or mach) | M | Ratio of flow velocity to the local speed of sound | unitless | 1 | |
Magnetic field strength | H | Strength of a magnetic field | A/m | L−1 I | vector field |
Magnetic flux | Φ | Measure of magnetism, taking account of the strength and the extent of a magnetic field | weber (Wb) | L2 M T−2 I−1 | scalar |
Magnetic flux density | B | Measure for the strength of the magnetic field | tesla (T = Wb/m2) | M T−2 I−1 | pseudovector field |
Magnetic moment (or magnetic dipole moment) | m | The component of magnetic strength and orientation that can be represented by an equivalent magnetic dipole | N⋅m/T | L2 I | vector |
Magnetization | M | Amount of magnetic moment per unit volume | A/m | L−1 I | vector field |
Mass fraction | x | Mass of a substance as a fraction of the total mass | kg/kg | 1 | intensive |
(Mass) Density (or volume density) | ρ | Mass per unit volume | kg/m3 | L−3 M | intensive |
Mean lifetime | τ | Average time for a particle of a substance to decay | s | T | intensive |
Molar concentration | C | Amount of substance per unit volume | mol⋅m−3 | L−3 N | intensive |
Molar energy | J/mol | Amount of energy present in a system per unit amount of substance | J/mol | L2 M T−2 N−1 | intensive |
Molar entropy | S° | Entropy per unit amount of substance | J/(K⋅mol) | L2 M T−2 Θ−1 N−1 | intensive |
Molar heat capacity | c | Heat capacity of a material per unit amount of substance | J/(K⋅mol) | L2 M T−2 Θ−1 N−1 | intensive |
Moment of inertia | I | Inertia of an object with respect to angular acceleration | kg⋅m2 | L2 M | extensive, tensor, scalar |
Momentum | سانچو:Vec | Product of an object's mass and velocity | kg⋅m/s | L M T−1 | vector, extensive |
Optical power | P | Measure of the effective curvature of a lens or curved mirror; inverse of focal length | dioptre (dpt = m−1) | L−1 | |
Permeability | μs | Measure for how the magnetization of material is affected by the application of an external magnetic field | H/m | L M T−2 I−2 | intensive |
Permittivity | εs | Measure for how the polarization of a material is affected by the application of an external electric field | F/m | L−3 M−1 T4 I2 | intensive |
Plane angle | θ | Ratio of circular arc length to radius | radian (rad) | 1 | |
Pop | سانچو:Vec | Rate of change of crackle per unit time: the sixth time derivative of position | m/s6 | L T−6 | vector |
Power | P | Rate of transfer of energy per unit time | watt (W) | L2 M1 T−3 | extensive, scalar |
Pressure | p | Force per unit area | pascal (Pa = N/m2) | L−1 M1 T−2 | intensive, scalar |
Pressure gradient | Pressure per unit distance | pascal/m | L−2 M1 T−2 | vector | |
(Radioactivity) Activity | A | Number of particles decaying per unit time | becquerel (Bq = Hz) | T−1 | extensive, scalar |
(Radiation) Dose | D | Ionizing radiation energy absorbed per unit mass | gray (Gy = J/kg) | L2 T−2 | |
Radiance | L | Power of emitted electromagnetic radiation per unit solid angle per emitting source area | W/(m2⋅sr) | M T−3 | |
Radiant intensity | I | Power of emitted electromagnetic radiation per unit solid angle | W/sr | L2 M T−3 | scalar |
Reaction rate | r | Rate of a chemical reaction for unit time | mol/(m3⋅s) | L−3 T−1 N | intensive, scalar |
Refractive index | n | Factor by which the phase velocity of light is reduced in a medium | unitless | 1 | intensive, scalar |
Reluctance | resistance to the flow of magnetic flux | H−1 | L−2 M−1 T2 I2 | scalar | |
Solid angle | Ω | Ratio of area on a sphere to its radius squared | steradian (sr) | ∠2 | |
Specific energy | Energy density per unit mass | J⋅kg−1 | L2 T−2 | intensive | |
Specific heat capacity | c | Heat capacity per unit mass | J/(K⋅kg) | L2 T−2 Θ−1 | intensive |
Specific volume | v | Volume per unit mass (reciprocal of density) | m3⋅kg−1 | L3 M−1 | intensive |
Spin | S | Quantum-mechanically defined angular momentum of a particle | kg⋅m2⋅s−1 | L2 M T−1 | |
Strain | ε | Extension per unit length | unitless | 1 | |
Stress | σ | Force per unit oriented surface area | Pa | L−1 M T−2 | order 2 tensor |
Surface tension | γ | Energy change per unit change in surface area | N/m or J/m2 | M T−2 | |
Temperature gradient | steepest rate of temperature change at a particular location | K/m | L−1 Θ | vector | |
Thermal conductance | κ (or) λ | Measure for the ease with which an object conducts heat | W/K | L2 M T−3 Θ−1 | extensive |
Thermal conductivity | λ | Measure for the ease with which a material conducts heat | W/(m⋅K) | L M T−3 Θ−1 | intensive |
Thermal resistance | R | Measure for the ease with which an object resists conduction of heat | K/W | L−2 M−1 T3 Θ | extensive |
Thermal resistivity | Rλ | Measure for the ease with which a material resists conduction of heat | K⋅m/W | L−1 M−1 T3 Θ | intensive |
Torque | τ | Product of a force and the perpendicular distance of the force from the point about which it is exerted | newton-metre (N⋅m) | L2 M T−2 | bivector (or pseudovector in 3D) |
Velocity | سانچو:Vec | Moved distance per unit time: the first time derivative of position | m/s | L T−1 | vector |
Volume | V | Three dimensional extent of an object | m3 | L3 | extensive, scalar |
Volumetric flow rate | Q | Rate of change of volume with respect to time | m3⋅s−1 | L3 T−1 | extensive, scalar |
Wavelength | λ | Perpendicular distance between repeating units of a wave | m | L | |
Wavenumber | k | Repetency or spatial frequency: the number of cycles per unit distance | m−1 | L−1 | scalar |
Wavevector | سانچو:Vec | Repetency or spatial frequency vector: the number of cycles per unit distance | m−1 | L−1 | vector |
Weight | w | Gravitational force on an object | newton (N = kg⋅m/s2) | L M T−2 | vector |
Work | W | Transferred energy | joule (J) | L2 M T−2 | scalar |
Young's modulus | E | Ratio of stress to strain | pascal (Pa = N/m2) | L−1 M T−2 | scalar; assumes isotropic linear material |
spring constant | k | k is the torsional constant (measured in N·m/radian), which characterizes the stiffness of the torsional spring or the resistance to angular displacement. | N/m | M T−2 | scalar |