Search Results: Unitless


Dimensionless quantity
Senin, 2026-08-24 16:03:45

having equal dimensions in numerator and denominator are actually only unitless quantities and still have physical dimension defined as dim Q = dim A ×...

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Molecular mass
Rabu, 2026-04-22 21:13:25

isotopes of an element. The derived quantity relative molecular mass is the unitless ratio of the mass of a molecule to the atomic mass constant (which is equal...

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List of common physics notations
Selasa, 2026-06-16 04:50:23

{\displaystyle A} area square meter (m2) amplitude meter atomic mass number unitless a {\displaystyle \mathbf {a} } acceleration meter per second squared (m/s2)...

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Coefficient of restitution
Jumat, 2026-07-17 00:16:53

bounce to that of the preceding bounce gives the coefficient of restitution for the ball/surface impact Other names COR Common symbols e SI unit unitless...

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Mechanical index
Rabu, 2025-12-24 09:24:38

Mechanical index (MI) is a unitless ultrasound metric originally developed by Robert Apfel and Christy Holland. It is defined as MI = P r f c , {\displaystyle...

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Mahalanobis distance
Rabu, 2026-07-29 07:28:35

Euclidean distance in the transformed space. The Mahalanobis distance is thus unitless, scale-invariant, and takes into account the correlations of the data set...

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Duty cycle
Kamis, 2026-04-23 11:27:27

{\displaystyle \alpha } as the symbol for duty cycle. As a ratio, duty cycle is unitless and may be given as decimal fraction and percentage alike. An alternative...

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Friedmann–Lemaître–Robertson–Walker metric
Minggu, 2026-08-23 08:30:45

{\displaystyle r} has units of length and a ( t ) {\displaystyle a(t)} is unitless. k {\displaystyle k} is then the Gaussian curvature of the space at the...

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Standardized coefficient
Senin, 2024-09-09 06:02:05

independent variables are equal to 1. Therefore, standardized coefficients are unitless and refer to how many standard deviations a dependent variable will change...

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Relative change
Kamis, 2026-07-09 06:41:21

reference or starting value. The comparison is expressed as a ratio and is a unitless number. By multiplying these ratios by 100 they can be expressed as percentages...

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Noise figure
Minggu, 2026-02-01 22:45:10

values indicating better performance. The noise factor is defined as the unitless ratio of the output noise power of a device to the portion thereof attributable...

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Timestamp
Rabu, 2026-08-12 11:01:58

every 1 minute since its last manual "reset" event Sequence number: 21 — a unitless counter that indicates only the relative order of events; this is event...

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Scalar (physics)
Senin, 2026-06-01 18:55:03

scalars. The term "scalar" has origin in the multiplication of vectors by a unitless scalar, which is a uniform scaling transformation. A scalar in physics...

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Classical mechanics
Selasa, 2026-08-04 10:53:04

electromagnetic or thermal) units with kg, m and s position m angular position/angle unitless (radian) velocity m·s−1 angular velocity s−1 acceleration m·s−2 angular...

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Toughness
Senin, 2026-05-11 19:14:51

underneath the stress–strain (σ–ε) curve = σ × ε UT [=] F/A × ΔL/L = (N·m−2)·(unitless) UT [=] N·m·m−3 UT [=] J·m−3 An alloy made of almost equal amounts of chromium...

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Hydroelectricity
Senin, 2026-08-24 14:53:03

watts) η {\displaystyle \eta } (eta) is the coefficient of efficiency (a unitless, scalar coefficient, ranging from 0 for completely inefficient to 1 for...

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Lorenz curve
Rabu, 2026-08-12 18:46:28

{\displaystyle p(x)} ) Standard CDF: F ( x ) {\displaystyle F(x)} Proportion / % Unitless ratio ( [ 0 , 1 ] {\displaystyle [0,1]} or 0 -- 100 % {\displaystyle 0{\text{--}}100\%}...

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Net tonnage
Jumat, 2026-08-14 11:57:45

displacement. Also, unlike the net register tonnage, the net tonnage is unitless and thus can not be defined as "tons" or "net tons". The International...

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Bit error rate
Senin, 2026-06-29 08:04:34

transferred bits during a studied time interval. Bit error ratio is a unitless performance measure, often expressed as a percentage. The bit error probability...

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Capacity factor
Senin, 2025-12-29 06:08:17

The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy...

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Atomic mass
Minggu, 2026-05-03 02:13:59

Standard atomic weight Number Total molar mass [g/mol] or molecular weight (unitless) C 12.011 1 12.011 H 1.008 4 4.032 CH4 16.043 Molecular mass of 12C1H4...

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Equable shape
Sabtu, 2025-09-20 05:27:19

angled triangle with sides 5, 12 and 13 has area and perimeter both with a unitless numerical value of 30. An area cannot be equal to a length except relative...

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Specific speed
Kamis, 2026-08-27 03:45:31

pump or turbine, which divides the actual performance figure to provide a unitless figure of merit. The resulting figure would more descriptively be called...

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Amplifier
Rabu, 2026-06-24 16:29:08

varies is dependent on the same property of the input, making the gain unitless (though often expressed in decibels (dB)).[citation needed] Most amplifiers...

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Q10 (temperature coefficient)
Minggu, 2026-08-23 04:12:27

R_{2}=R_{1}~Q_{10}^{(T_{2}-T_{1})/10\,^{\circ }\mathrm {C} }} Q10 is a unitless quantity, as it is the factor by which a rate changes. In this equation...

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Statistic (role-playing games)
Jumat, 2025-12-05 03:13:10

particular aspect of a fictional character. That piece of data is usually a (unitless) integer or, in some cases, a set of dice. For some types of statistics...

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Turn (angle)
Selasa, 2025-12-16 18:36:58

Rotation Other names number of revolutions, number of cycles, number of turns, number of rotations Common symbols N SI unit Unitless Dimension 1...

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Dollar (reactivity)
Sabtu, 2025-12-13 22:54:20

of reactivity that takes into account the time of multiplication. The unitless, pcm, percent, and inverse-time-based versions of reactivity can all be...

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Zisman Plot
Selasa, 2025-10-07 04:06:23

variations of the Zisman plot exist because the dependent variable is unitless being since it is cosine of the contact angle for the liquid. For adhesive...

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Single-scattering albedo
Kamis, 2025-10-09 03:21:40

small-particle scattering of electromagnetic waves. Single-scattering albedo is unitless, and a value of unity implies that all particle extinction is due to scattering;...

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Scale ruler
Jumat, 2026-04-03 18:04:05

is not to be confused with a true unitless ratio. A 1:5 architectural scale (inches to feet) would be a 1:60 unitless scale (inches to inches) since there...

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Relative density
Minggu, 2026-08-09 19:56:09

{\displaystyle \mathrm {RD} } , S G {\displaystyle \mathrm {SG} } SI unit Unitless Derivations from other quantities R D = ρ s a m p l e ρ H 2 O {\displaystyle...

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Network performance
Sabtu, 2024-09-14 06:17:28

total number of transferred bits during a studied time interval. BER is a unitless performance measure, often expressed as a percentage. The bit error probability...

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Pharmacokinetics
Rabu, 2026-05-20 06:16:42

Bioavailability The systemically available fraction of a drug. f {\displaystyle f} Unitless A U C po ⋅ D iv A U C iv ⋅ D po {\displaystyle {\frac {AUC_{\text{po}}\cdot...

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Optics
Minggu, 2026-08-02 22:28:26

the proper exposure in daylight. A camera's aperture is measured by a unitless number called the f-number or f-stop, f/#, often notated as N {\displaystyle...

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M squared
Jumat, 2026-08-21 00:23:27

laser beam, M2 is exactly one. Unlike the beam parameter product, M2 is unitless and does not vary with wavelength. The M2 value for a laser beam is widely...

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Two-line element set
Rabu, 2026-07-15 22:05:14

reference frame, measured from the vernal point 247.4627 5 27–33 Eccentricity (unitless, decimal point assumed) 0006703 6 35–42 Argument of perigee (degrees) 130...

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Fick's laws of diffusion
Selasa, 2026-08-11 18:03:21

(unit m2), η t m {\displaystyle \eta _{tm}} transmembrane efficiency (unitless), which can be calculated from the stochastic theory of chromatography...

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Tonnage
Sabtu, 2026-05-23 04:13:52

other statutory requirements and is expressed simply as GT, which is a unitless entity, even though it derives from the volumetric capacity in cubic metres...

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Binding constant
Senin, 2026-03-30 16:39:41

despite the fact that strictly speaking, all association constants are unitless values. The inclusion of units arises from the simplification that such...

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Gibbs free energy
Kamis, 2026-04-02 13:51:33

Q_{\mathrm {r} }} , reaction quotient (unitless), K e q {\displaystyle K_{\mathrm {eq} }} , equilibrium constant (unitless), w e l e c , r e v {\displaystyle...

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Guanfacine
Jumat, 2026-08-21 02:05:42

6 ng/mL AUC∞ 32 ± 9 56 ± 15 ng*h/mL T1/2 18 ± 4 16 ± 3 h (hours) Tmax 6.0 (4.0 - 8.0) 3.0 (1.5 - 4.0) h (hours) Bioavailability 58% 80 - 100% unitless...

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Mass spectrometry
Senin, 2026-08-17 20:01:10

m / z Δ ( m / z ) {\displaystyle {\tfrac {m/z}{\Delta (m/z)}}} . It is unitless. A "high-resolution" mass analyzer typically has resolution >1 million...

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Ratio
Kamis, 2026-08-06 00:57:30

trials, there are expected to be three wins and seven losses. Ratios may be unitless, as in the case they relate quantities in units of the same dimension,...

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Vector quantity
Kamis, 2026-01-15 17:07:41

as the product of a unit of measurement and a vector numerical value (unitless), often a Euclidean vector with magnitude and direction. For example, a...

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Quantity calculus
Selasa, 2025-10-28 18:46:35

and that the so-called dimensionless quantities should be understood as "unitless quantities". How to use quantity calculus for unit conversion and keeping...

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Quadratic formula
Kamis, 2026-08-20 20:34:54

a} ⁠, ⁠ b {\displaystyle b} ⁠, and/or ⁠ c {\displaystyle c} ⁠ are not unitless then the quantities ⁠ x {\displaystyle x} ⁠ and ⁠ b a {\displaystyle {\tfrac...

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2025 UC11
Senin, 2026-08-03 13:56:29

(q) Semi-major axis (a) Eccentricity (e) Inclination (i) Units (days) AU Unitless 0<=e<=1 (°) Pre-flyby 2025-Mar-31 409.1 1.238 0.920 1.079 0.147 1.24° Post-flyby...

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Bowen ratio
Senin, 2025-10-06 00:40:51

(i.e., energy associated with changes of state), respectively. It is a unitless quantity. The ratio was named by Harald Sverdrup after Ira Sprague Bowen...

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United States customary units
Selasa, 2026-08-11 23:05:42

Knitting needles in the United States are measured according to a non-linear unitless numerical system. Thickness of aluminum foil is measured in mils (1⁄1000...

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Friis transmission equation
Rabu, 2025-04-16 18:54:42

separating the antennas. To use the equation as written, the antenna gains are unitless values, and the units for wavelength ( λ {\displaystyle \lambda } ) and...

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Solvent
Rabu, 2026-05-27 09:19:25

density of water at the same temperature. As such, specific gravity is a unitless value. It readily communicates whether a water-insoluble solvent will float...

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Vector (mathematics and physics)
Minggu, 2026-06-28 11:51:03

as the product of a unit of measurement and a vector numerical value (unitless), often a Euclidean vector with magnitude and direction. For example, a...

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Divisia index
Jumat, 2026-08-21 14:24:46

changes in quantities and/or prices. The resulting index number series is unitless, like other index numbers. In practice, economic data are not measured...

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Black-body radiation
Rabu, 2026-08-19 02:39:40

_{\text{peak}}=T\times 5.879...\times 10^{10}\mathrm {Hz} /\mathrm {K} ~.} In unitless form, the maximum occurs when e x ( 1 − 1 3 x ) = 1 {\displaystyle e^{x}\left(1-{\tfrac...

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Reference ranges for urine tests
Rabu, 2025-08-27 22:41:47

(HPF) RBC casts n/a 0 / negative White blood cells (WBCs) 0 2 pH 5 7 (unitless) Protein 0 trace amounts Glucose n/a 0 / negative Ketones n/a 0 / negative...

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Mean corpuscular volume
Rabu, 2026-08-05 04:48:02

the rest of the volume composed of plasma. Multiply by the hematocrit (a unitless quantity) to take this into account. 2 × 10 − 7   μ L / c e l l × 0.4 =...

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Gaussian units
Rabu, 2026-08-26 23:35:52

χ e I {\displaystyle \chi _{\mathrm {e} }^{_{\mathrm {I} }}} are both unitless, but have different numeric values for the same material: 4 π χ e G = χ...

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Rotation
Minggu, 2026-07-05 02:18:04

objects in contact with each-other without sliding Rotation (quantity) – a unitless scalar representing the number of rotations Rotation around a fixed axis...

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Relative permittivity
Selasa, 2025-12-23 05:27:57

constant (units ohms, or reciprocal siemens, such that σλκ = εr remains unitless). Permittivity is typically associated with dielectric materials, however...

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Stripping ratio
Senin, 2026-01-19 07:29:44

referred to as volume/weight., whereas in metal mining, stripping ratio is unitless and is expressed as weight/weight. A stripping ratio can be expressed as...

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Display aspect ratio
Minggu, 2026-08-09 23:02:59

display resolution. Because the units cancel out, all aspect ratios are unitless. The size of a television set or computer monitor is given as the diagonal...

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Coefficient of utilization
Jumat, 2025-09-12 02:54:04

lamps within the luminaire. As a ratio, the coefficient of utilization is unitless. For example, some of the light emitted by a luminaire may exit away from...

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Total factor productivity
Jumat, 2026-06-26 16:24:16

artifact. Official statistics avoid measuring levels, instead constructing unitless growth rates of output and inputs and thus also for the residual. Productivity...

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Luminosity
Minggu, 2026-08-23 09:16:22

zero point values are defined by the IAU. The magnitude of a star, a unitless measure, is a logarithmic scale of observed visible brightness. The apparent...

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Residual-resistance ratio
Selasa, 2025-11-11 19:44:27

such as the Kondo effect and superconductivity. Note that since it is a unitless ratio there is no difference between a residual resistivity and residual-resistance...

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Covariance
Kamis, 2026-05-28 18:35:25

number between − 1 {\displaystyle -1} and 1 {\displaystyle 1} , and is unitless (unlike the covariance). The correlation coefficient is often denoted by...

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Pink noise
Minggu, 2026-07-26 20:34:39

{x((k+1)\tau )-x(k\tau )}{\tau }}} Note that y k {\displaystyle y_{k}} is unitless: it is the numerical ratio between ticks of the physical clock and ticks...

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GT
Sabtu, 2026-08-01 16:56:57

magnetic flux density Gigatonne (Gt), a metric unit of mass Gross tonnage, a unitless measure of the size of merchant ships Grounded theory, a method for generating...

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Maxwell–Boltzmann distribution
Kamis, 2026-07-02 22:13:12

]}^{3/2}\exp \left(-{\frac {m}{2k_{\text{B}}T}}\right);\end{aligned}}} or in unitless presentation: 0 = a 2 x f ′ ( x ) + ( x 2 − 2 a 2 ) f ( x ) , f ( 1 ) =...

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Einstein relation (kinetic theory)
Jumat, 2026-05-08 04:00:00

_{q}\,T}{Z}},} where Z {\displaystyle Z} is the charge number of particle (unitless) T {\displaystyle T} is electron temperature or ion temperature in plasma...

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Deviation (statistics)
Jumat, 2026-07-03 08:07:17

deviations would be expressed in units like meters or feet. To make deviations unitless and facilitate comparisons across different datasets, one can nondimensionalize...

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Resilience (materials science)
Kamis, 2026-02-19 00:34:51

stress–strain (σ–ε) curve up to yield = σ × ε Ur [=] Pa × % = (N·m−2)·(unitless) Ur [=] N·m·m−3 Ur [=] J·m−3 Toughness Campbell, Flake C. (2008). Elements...

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Smith chart
Jumat, 2026-07-31 06:32:23

{\displaystyle Z_{0}} or Y 0 {\displaystyle Y_{0}} . Reflection coefficients are unitless and read directly off the chart. Engineers use the chart for both distributed...

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Groundwater discharge
Kamis, 2025-10-23 16:16:32

the aquifer ([L·T−1]; m/s), dh/dl is the hydraulic gradient ([L·L−1]; unitless), and A is the area which the groundwater is flowing through ([L2]; m2)...

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Photodiode
Selasa, 2026-06-30 01:01:38

of the number of photogenerated carriers to incident photons which is a unitless quantity. Dark current The dark current is the current through the photodiode...

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Open Shortest Path First
Minggu, 2026-08-16 05:02:20

throughput of a link, or link availability and reliability, expressed as simple unitless numbers. This provides a dynamic process of traffic load balancing between...

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Cavalieri's quadrature formula
Selasa, 2026-06-02 08:53:48

consisting of units of area (relative to a standard unit), hence being unitless, appears to have originated with Wallis; Wallis studied fractional and...

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Druglikeness
Sabtu, 2025-09-20 14:59:04

compound (including those found in Lipinski's Rule of Five), into a single, unitless score ranging from 0 (all properties unfavourable for drug candidacy) to...

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Biological value
Senin, 2026-03-02 16:16:23

relative to a readily utilizable protein source, often egg (usually shown as unitless). The two values will be similar but not identical. The BV of a food varies...

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Unit of measurement
Selasa, 2026-08-11 04:17:39

may be added. When a unit is divided by itself, the division yields a unitless one. When two different units are multiplied or divided, the result is...

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Bremsstrahlung
Kamis, 2026-07-02 14:44:06

than the initial electron kinetic energy. With these assumptions, two unitless parameters characterize the process: η Z ≡ Z e ¯ 2 / ℏ v {\displaystyle...

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Thiele/Small parameters
Minggu, 2026-08-16 04:06:53

{\displaystyle f_{\rm {s}}} is ±15%. Q t s {\displaystyle Q_{\rm {ts}}} A unitless measurement, characterizing the combined electric and mechanical damping...

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Relaxation (physics)
Selasa, 2026-07-07 07:31:39

water droplets) [m−3] R = mean radius of particles [m] K = capacitance [unitless]. In astronomy, relaxation time relates to clusters of gravitationally...

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Dual impedance
Jumat, 2026-03-27 03:57:35

scaling factor R02 has the dimensions of Ω2, so the constant 1 in the unitless expression would actually be assigned the dimensions Ω2 in a dimensional...

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Potential evapotranspiration
Jumat, 2026-07-10 09:25:46

constant (γ ≈ 66 Pa K−1) N.B.: The coefficients 0.408 and 900 are not unitless but account for the conversion from energy values to equivalent water depths:...

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Fanning friction factor
Minggu, 2026-02-15 20:59:52

been applied to produce the formula given below. Re, Reynolds number (unitless); ε, roughness of the inner surface of the pipe (dimension of length);...

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RLC circuit
Sabtu, 2026-08-22 23:03:04

attenuation (symbol α) is measured in nepers per second. However, the unitless damping factor (symbol ζ, zeta) is often a more useful measure, which is...

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Formation flying
Selasa, 2026-06-23 03:49:30

 where C D {\displaystyle C_{\text{D}}} is the experimentally obtained unitless number, ρ {\displaystyle \rho }  is the density of the fluid medium through...

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List of conversion factors
Selasa, 2026-07-07 22:56:20

mach number M Ratio of the speed to the speed of sound in the medium (unitless). ≈ 340 m/s in air at sea level ≈ 295 m/s in air at jet altitudes metre...

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Sigma heat
Senin, 2024-03-25 00:36:48

(in °F), and W {\displaystyle W} is the specific humidity of the air (unitless). The equivalent metric formula: S = 17.86 k J k g + 1.005 k J k g ⋅ K...

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Reference ranges for blood tests
Rabu, 2026-08-12 04:12:37

cholesterol (Not valid when triglycerides >5.0 mmol/L) 2.0, 2.4 3.0, 3.4 mmol/L < 2.5 mmol/L 80, 94 120, 130 mg/dL < 100 mg/dL LDL/HDL quotient n/a 5 (unitless)...

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Tammann temperature and Hüttig temperature
Selasa, 2026-02-10 07:02:42

(usually specified in kelvin units) and α {\displaystyle \alpha } is a unitless constant that is independent of the material, having the value α = 0.3...

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Logical effort
Selasa, 2025-11-18 02:38:28

any additional capacitance added by interconnects or other loads; the unitless number associated with this is known as the normalized delay. (Some authors...

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Water flow test
Minggu, 2026-07-12 15:36:09

residual flow during the test (gallons per minute) c = discharge coefficient (unitless). This is usually 1.0 if using a diffuser. If using a wand to measure the...

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Ruaka (wrestler)
Rabu, 2026-08-26 02:28:19

2020 on 3 October 2020, Tokyo Cyber Squad was disbanded and Ruaka became unitless. On the first night of the 2021 Cinderella Tournament from 10 April Ruaka...

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Shortest job next
Jumat, 2026-05-22 08:21:00

intuitive name given to WSJF which expresses cost of delay and duration using unitless relative "points" rather than actual units of time or money. Shortest remaining...

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Glossary of engineering: A–L
Sabtu, 2026-04-04 16:39:52

the Avogadro constant (the ratio of the number of particles, N, which is unitless, to the amount of substance, n, in units of moles), and e is the elementary...

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Maika (wrestler)
Senin, 2026-07-27 04:14:46

Gate on January 4, 2024, Donna Del Mondo was disbanded and Maika became unitless. On January 20, 2024, Maika, Hanako, Mina Shirakawa, Waka Tsukiyama and...

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Duration (finance)
Jumat, 2026-07-10 23:39:44

and reporting. Macaulay duration has units of time. Modified duration is unitless and acts as a semi-elasticity. For a small change Δ y {\displaystyle \Delta...

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Absorbance
Selasa, 2026-05-19 13:15:35

spectral optical depth in wavelength. Although absorbance is properly unitless, it is sometimes reported in "absorbance units", or AU. Many people, including...

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Standardized uptake value
Selasa, 2026-06-23 15:23:49

units of g/mL or equivalent. However, SUV is typically presented as a unitless parameter. One way to explain this simplification is by considering that...

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Change of variables
Sabtu, 2025-07-26 16:06:23

Proper scaling may normalize variables, that is make them have a sensible unitless range such as 0 to 1. Finally, if a problem mandates numeric solution,...

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Guide number
Minggu, 2025-12-28 09:30:49

expressed as a unitless numeric value like 34, even though they are technically a composite unit of measure that is a product of the unitless f-number and...

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Correlation function (astronomy)
Jumat, 2025-04-04 23:45:52

(\mathbf {x} )=(\rho (\mathbf {x} )-{\bar {\rho }})/{\bar {\rho }}} is a unitless measure of overdensity, defined at every point. Letting Δ = | x 1 − x 2...

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Neutrino oscillation
Senin, 2026-08-17 09:27:36

{eV}}^{2}}}{\frac {L}{\rm {km}}}{\frac {\rm {GeV}}{E}}~,} where 1.27 is unitless. In this form, it is convenient to plug in the oscillation parameters since:...

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Virtual temperature
Minggu, 2025-10-05 04:40:08

We now have a non-linear scalar for temperature dependent purely on the unitless value e / p {\displaystyle e/p} , allowing for varying amounts of water...

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Strain rate
Senin, 2025-09-29 16:11:00

{\displaystyle t} the length is 7 cm, the strain at that time will be 6 (a unitless number). Then the strain rate will be ϵ ˙ ( t ) = d ϵ d t = d d t ( L (...

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Hollomon–Jaffe parameter
Senin, 2022-05-02 07:49:16

parameter unique to the material used. The Hollomon parameter itself is unitless and realistic numeric values vary between 15 and 21. H p = T ( C + log...

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Eco-cities
Selasa, 2026-08-25 00:21:39

efficiency of converting resources/emissions into socioeconomic output Unitless DEA score (0–1) CO₂ intensity of economic output Emissions produced per...

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Michelson–Morley experiment
Minggu, 2026-08-16 09:22:05

single wavelength. As can be seen by this relation, fringe shift n is a unitless quantity. Since L ≈ 11 meters and λ ≈ 500 nanometers, the expected fringe...

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Scattering parameters
Sabtu, 2026-06-27 22:00:51

At the test frequency each element or S-parameter is represented by a unitless complex number that represents magnitude and angle, i.e. amplitude and...

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Super-resolution microscopy
Minggu, 2026-08-16 13:32:08

Nsig is the photon counts of the total PSF over all pixels of interest. (unitless) * Nbg the average background photon counts per pixel (dark counts already...

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Froth flotation
Senin, 2026-08-24 20:08:45

feed weight to concentrate weight F C {\displaystyle {\tfrac {F}{C}}} (unitless) F C = c − t f − t {\displaystyle {\frac {F}{C}}={\frac {c-t}{f-t}}} Percent...

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Hayashi track
Sabtu, 2026-05-23 00:17:53

{\mu H}{k}}\right)^{5/2}{\frac {M^{1/2}R^{3/2}P}{T^{5/2}}},} where E is unitless, and not the energy. Modelling stars as polytropes with index 3/2 (in other...

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Gravitational microlensing
Minggu, 2026-08-23 08:36:52

the closeness of the alignment between observer, lens, and source. The unitless number u is defined as the angular separation of the lens and the source...

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Gain (antenna)
Selasa, 2026-05-19 03:17:03

antenna when receiving is equal to its gain when transmitting. Gain is a unitless measure that multiplies an antenna's radiation efficiency η {\displaystyle...

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Energy conversion efficiency
Senin, 2026-02-02 10:16:43

efficacy (effectiveness), which is a unit of measurement, efficiency is a unitless number expressed as a percentage, requiring only that the input and output...

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Ecohydrology
Sabtu, 2025-12-06 22:48:04

because many plant species do not actually "wilt". The Damkohler number is a unitless ratio that predicts whether the duration in which a particular nutrient...

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Noah Destination 2024
Sabtu, 2025-11-08 01:13:21

of Ratel's until 2020. Given the fact that Yo-Hey and Tadasuke remained unitless after Good Looking Guys' dissolution the same night, they offered a hand...

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Relative purchasing power parity
Senin, 2026-04-20 09:54:34

{\displaystyle Q_{t}=C\cdot P_{t}} (still measured in A$), where C is a unitless and time-invariant constant. That is, one price level is always a constant...

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Deformation (engineering)
Rabu, 2026-07-08 09:13:00

per square metre, or pascals (1 pascal = 1 Pa = 1 N/m2), and strain is unitless. The stress–strain curve for this material is plotted by elongating the...

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Relative volatility
Senin, 2025-01-20 07:30:02

volatile component is in the denominator. α {\displaystyle \alpha } is a unitless quantity. When the volatilities of both key components are equal, α {\displaystyle...

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Proportional control
Rabu, 2025-08-13 13:47:15

Qualifications: It is preferable to express K p {\displaystyle K_{p}} as a unitless number. To do this, we can express e ( t ) {\displaystyle e(t)} as a ratio...

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Rosiwal scale
Minggu, 2023-12-10 21:57:22

The base value of the Rosiwal scale is defined as corundum set to 1000 (unitless). Hardness August Karl Rosiwal Friedrich Mohs Williams Postel, A.; Lufkin...

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Metal-mesh optical filter
Selasa, 2026-03-17 00:57:57

P_{D}=2\rho \eta {\bar {J}}^{2}} . Using the definition of skin depth, the unitless absorptivity, A = P d / P o {\displaystyle A=P_{d}/P_{o}} where P o {\displaystyle...

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Concentrator photovoltaics
Jumat, 2026-07-03 06:45:51

V_{\mathrm {\chi oc} }=V_{\mathrm {oc} }+{kT \over q}\ln(\chi ).} Note that the unitless fill factor for a "high quality" solar cell typically ranges 0.75–0.9 and...

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I = PAT
Sabtu, 2026-08-15 22:03:58

therefore affluence is measured in units of gha per capita. Technology is a unitless efficiency factor. In the I=PAT equation, the variable P represents the...

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Frost diagram
Rabu, 2026-07-29 04:00:27

species is shown on the x axis of the Frost diagram. Oxidation states are unitless and are also scaled in positive and negative integers. Most often, the...

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Madhava's sine table
Jumat, 2026-04-17 21:42:23

measures like arcminute etc in expressing the R-sines. Modern sines are unitless ratios. Jya-s or R-sines are the same multiplied by a measure of length...

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Laser-induced breakdown spectroscopy
Selasa, 2026-08-11 23:38:55

level i (2J+1) U ( T ) {\displaystyle U(T)} is the partition function (unitless) E i {\displaystyle E_{i}} is the energy level of the upper level i (in...

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High-entropy alloy
Senin, 2026-08-17 11:51:48

compounds. Both of the thermodynamic parameters can be combined into a single, unitless parameter Ω: Ω = T m Δ S m i x | Δ H m i x | {\displaystyle \Omega ={\frac...

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Cancer slope factor
Kamis, 2026-07-16 07:10:26

(mg/kg-day)−1 ADAF = Age-dependent adjustment factor for age bin "i" (unitless) The Cancer Slope Factor is used to derive the Risk Specific Dose (RSD)(mg/kg-day)...

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Directivity
Senin, 2025-08-25 22:35:39

{2}{1-\cos {\frac {\theta }{2}}}}} . The directivity is rarely expressed as the unitless number D {\displaystyle D} but rather as a decibel comparison to a reference...

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Elasticity (economics)
Kamis, 2026-04-23 04:44:17

flatter, the price elasticity (demand or supply) is higher. Elasticity is a unitless ratio, independent of the type of quantities being varied. An elastic variable...

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Parshall flume
Sabtu, 2025-11-22 05:28:41

B7553-1993 Parshall flume type flowmeters An illustration exists of a unitless E – Y diagram and how Energy and depth of flow change throughout a Parshall...

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Starling equation
Senin, 2026-07-13 00:45:10

co-efficient Kfc.[citation needed] Staverman's reflection coefficient, σ, is a unitless constant that is specific to the permeability of a membrane to a given...

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X-ray reflectivity
Sabtu, 2026-06-27 14:39:25

incident angle of the peaks θ 2 {\displaystyle \theta ^{2}} in rad2 vs unitless squared peak number N 2 {\displaystyle N^{2}} as follows: θ 2 = ( λ 2 d...

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Topographic wetness index
Kamis, 2025-06-05 03:02:33

runoff model TOPMODEL. Although the topographic wetness index is not a unitless number, it is sufficiently approximate that its interpretation doesn't...

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Canadian Forest Fire Weather Index System
Selasa, 2026-08-11 02:09:40

direct measurements of fire behaviour. The Fire Weather Index itself is a unitless rating of potential fire intensity, with higher values indicating greater...

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Specific quantity
Minggu, 2026-02-22 10:17:29

propellant Specific modulus, elastic modulus per mass density Specific speed, unitless figure of merit[clarification needed] used to classify pump impellers (pump-specific)...

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Vertical queue
Rabu, 2023-07-26 12:21:14

begins or at the stop line of a traffic signal. The vertical queue is unitless, and is simply representative of the number of vehicles which are delayed...

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Richards' theorem
Sabtu, 2026-08-15 10:57:49

(unknown) network incorporated within it ( R ( s ) {\displaystyle R(s)} is unitless, but R ( s ) Z ( k ) {\displaystyle R(s)Z(k)} has units of impedance and...

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Ratio estimator
Sabtu, 2026-03-28 19:35:40

denominator (N - 1). For a large N the difference is negligible. If x and y are unitless counts with Poisson distribution a second-order correction is r c o r r...

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Extent of reaction
Jumat, 2025-11-14 04:09:43

of reaction can either be considered to have units of moles or to be a unitless mole fraction. The extent of reaction represents the amount of progress...

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Ion acoustic wave
Senin, 2026-04-27 04:44:16

X_{i}\rangle \equiv \Sigma _{i}f_{i}X_{i}} is the average over ion species. A unitless version of this equation is γ e ⟨ Z i ⟩ ⟨ Z i 2 / A i u 2 − τ i ⟩ = 1 +...

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Complex gain
Selasa, 2026-05-12 00:11:21

  V = − 2 j . {\displaystyle G={\frac {2\ V}{j\cdot 1\ V}}=-2j.} This (unitless) complex number incorporates both the magnitude of the change in amplitude...

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Nondimensionalization
Rabu, 2026-05-06 19:26:38

}{d\tau }}+\chi =F(\tau ).} The coefficient of the first order term is unitless. Define 2 ζ   = d e f   b a c . {\displaystyle 2\zeta \ {\stackrel {\mathrm...

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Penman–Monteith equation
Minggu, 2026-05-31 02:27:08

constant (γ ≈ 66 Pa K−1) N.B.: The coefficients 0.408 and 900 are not unitless but account for the conversion from energy values to equivalent water depths:...

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Turbopump
Jumat, 2026-07-17 06:47:55

(r_{out}v_{tang,out}-r_{in}v_{tang,in})} η {\displaystyle \eta } = pump efficiency (unitless). This summarizes all inefficiencies into one term. u {\displaystyle u}...

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Great Salinity Anomaly
Minggu, 2026-08-23 12:08:48

and salinity is measured using the practical salinity values, which are unitless. In the North Atlantic Ocean, the high salinity of northward-flowing upper...

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Photocathode
Rabu, 2026-02-11 17:18:35

photomultiplier, phototube and image intensifier. Quantum efficiency is a unitless number that measures the sensitivity of the photocathode to light. It is...

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Explosives safety
Jumat, 2026-08-14 23:47:00

l b 3 {\displaystyle ft\times lb^{3}} but is typically expressed as a unitless value. A blast wave phenomenon is an incident involving the violent release...

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Chézy formula
Rabu, 2026-08-26 09:11:10

which for uniform normal depth of flow is the slope of the channel bottom [unitless; length/length]; C {\displaystyle C} is Chézy's coefficient [length1/2/time]...

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Orbital motion (quantum)
Kamis, 2025-11-20 23:20:54

{\displaystyle \alpha ^{2}mc^{2}} , where α {\displaystyle \alpha } is the unitless fine-structure constant, defined as α ≡ e 2 4 π ϵ 0 ℏ c ≈ 1 137.036 {\displaystyle...

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Non-line-of-sight propagation
Minggu, 2026-07-12 11:59:57

10^{-7}} H/m μ r {\displaystyle \mu _{r}} is the relative permeability (unitless) ϵ 0 {\displaystyle \epsilon _{0}} is the absolute permittivity in farads...

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Tin selenide
Selasa, 2025-12-30 15:33:23

exhibited the highest thermoelectric material efficiency, measured by the unitless ZT parameter, of any known material (~2.62 at 923 K along the b axis and...

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Self-healing hydrogels
Selasa, 2026-02-10 00:39:49

potential, p is pressure, kB is the Boltzmann constant, and χ and Nv are unitless hydrogel constants. As swelling increases, mechanical properties generally...

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Microfiltration
Jumat, 2026-07-24 04:11:33

{180*(1-\epsilon )}{\epsilon ^{3}*d_{s}^{2}}}} Where ε = Porosity of cake (unitless) d_s = Mean particle diameter (m) Rigorous design equations To give a better...

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Relativistic Lagrangian mechanics
Rabu, 2026-02-11 15:52:44

If the four spacetime coordinates xμ are given in arbitrary units (i.e. unitless), then gμν is the rank 2 symmetric metric tensor, which is also the gravitational...

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Ultrasound-triggered drug delivery using stimuli-responsive hydrogels
Sabtu, 2026-08-22 23:32:14

power, and spatial-peak temporal-average power. Mechanical index (MI) is a unitless metric that is used to measure the acoustic power output from ultrasound...

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Ductility (Earth science)
Jumat, 2026-06-19 05:13:09

Young's Modulus (In Pascal), and ϵ {\displaystyle \epsilon } = Strain (Unitless). Viscous deformation is when rocks behave and deform more like a fluid...

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Performance and modelling of AC transmission
Selasa, 2026-01-06 06:51:35

voltage ratio. Being the ratio of two same quantities, the parameter A is unitless. 2. C = I S V R {\displaystyle C={\frac {I_{S}}{V_{R}}}} So, the parameter...

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Maxwell–Jüttner distribution
Selasa, 2026-03-24 05:36:54

(\beta )=\left(1-\beta ^{2}\right)^{-1/2}} . (Note that the inverse of the unitless temperature θ {\displaystyle \theta } is the relativistic coldness ζ {\displaystyle...

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Voltage and frequency scaling
Sabtu, 2026-08-15 23:36:41

switching events per clock cycle by the transistors in the chip (as a unitless quantity) and f is the clock frequency. Voltage is therefore the main determinant...

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