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Index of articles associated with the same name
different mediums. Diffusivity may refer to: Thermal diffusivity, diffusivity of heat Diffusivity of mass: Mass diffusivity, molecular diffusivity (often called
Diffusivity
Rate at which heat spreads throughout a material
Thermal diffusivity and thermal effusivity are related concepts and quantities used to simulate non-equilibrium thermodynamics. Diffusivity is the more
Thermal_diffusivity
Proportionality constant in some physical laws
Diffusivity, mass diffusivity or diffusion coefficient is usually written as the proportionality constant between the molar flux due to molecular diffusion
Mass_diffusivity
Topics referred to by the same term
Look up diffuser or diffusers in Wiktionary, the free dictionary. Diffuser may refer to: Diffuser (automotive), a shaped section of a car's underbody
Diffuser
Parameter in plasma physics
number (i.e. a nonzero magnetic diffusivity) is associated with violation of Alfvén's theorem. The magnetic diffusivity has SI units of m2/s and is defined
Magnetic_diffusivity
Ratio of kinematic viscosity to thermal diffusivity
dynamicist Ludwig Prandtl. It is defined as the ratio of momentum diffusivity to thermal diffusivity. The Prandtl number is a ratio of physical properties that
Prandtl_number
Material that scatters light in optics
In optics, a diffuser (also called a light diffuser or optical diffuser) is any material that diffuses or scatters light in some manner to transmit soft
Diffuser_(optics)
Body of interstellar clouds
interstellar gas, which can form by the cooling and condensation of more diffuse gas. Examples of the latter case are planetary nebulae formed from material
Nebula
Ratio of a fluid's kinematic viscosity to mass diffusivity
dimensionless number defined as the ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity, and it is used to characterize fluid flows in which
Schmidt_number
Convection with two density gradients
or the higher molecular diffusivity. If the stratification is provided by the component with the lower molecular diffusivity (for example, in case of
Double_diffusive_convection
Highly aggressive brain tumor, mostly found in children
Diffuse midline glioma, H3 K27-altered (DMG) is a tumour that arises in midline structures of the brain, most commonly the brainstem, thalamus and spinal
Diffuse_midline_glioma
Hematologic cancer that affects lymphocytes
lymphoma, not otherwise specified diffuse large B cell lymphoma associated with chronic inflammation fibrin-associated diffuse large B cell lymphoma; primary
Lymphoma
Reflection with light scattered at random angles
Diffuse reflection is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many
Diffuse_reflection
term defined as the ratio between the momentum eddy diffusivity and the heat transfer eddy diffusivity. It is useful for solving the heat transfer problem
Turbulent_Prandtl_number
Method of measuring thermal diffusivity of a material
thermal diffusivity of the sample, the faster the energy reaches the backside. A laser flash apparatus (LFA) to measure thermal diffusivity over a broad
Laser_flash_analysis
Medical condition
Diffuse axonal injury (DAI) is a brain injury in which scattered lesions occur over a widespread area in white matter tracts as well as grey matter. DAI
Diffuse_axonal_injury
Motion characterized by chaotic changes in pressure and flow velocity
Turbulent flow is chaotic. However, not all chaotic flows are turbulent. Diffusivity The readily available supply of energy in turbulent flows tends to accelerate
Turbulence
Type of progressive dementia
paranoia. His widow said that his autopsy found diffuse Lewy body disease, while the autopsy used the term diffuse Lewy body dementia. Dennis Dickson, a spokesperson
Dementia_with_Lewy_bodies
Transport of dissolved species from the highest to the lowest concentration region
molecule diffusing through the pore. Under this condition, the collision with the pore walls becomes gradually more likely and the diffusivity is lower
Diffusion
Solar radiation reaching the Earth's surface
Diffuse sky radiation, is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by molecules or particulates
Diffuse_sky_radiation
Series of lines in atomic spectra
The diffuse series is a series of spectral lines in the atomic emission spectrum caused when electrons jump between the lowest p orbital and d orbitals
Diffuse_series
Thermodynamic device
A diffuser is "a device for reducing the velocity and increasing the static pressure of a fluid passing through a system". The fluid's static pressure
Diffuser_(thermodynamics)
Aerodynamic surface
A diffuser on an automobile is a shaped section of the car’s rear which improves its aerodynamic properties by enhancing the transition between the high-velocity
Diffuser_(automotive)
permeability to light (with transparent and opaque as the extremes), diffusivity (with diffuse and regular -or sharp- as the extremes), and darkness (with the
Cesia_(visual_appearance)
Ratio of thermal diffusivity to mass diffusivity
is a dimensionless number defined as the ratio of thermal diffusivity to mass diffusivity. It is used to characterize fluid flows where there is simultaneous
Lewis_number
Type of blood cancer
Diffuse large B-cell lymphoma (DLBCL) is a cancer of B cells, a type of lymphocyte that is responsible for producing antibodies. It is the most common
Diffuse_large_B-cell_lymphoma
Region of base material which is altered (but not melted) during heat welding
input by the welding process. The thermal diffusivity of the base material plays a large role—if the diffusivity is high, the material cooling rate is high
Heat-affected_zone
Type of interstellar cloud that obscures visible light
A dark nebula or absorption nebula is a type of interstellar cloud, particularly molecular clouds, that is so dense that it obscures the visible wavelengths
Dark_nebula
Belief in the existence of one God who delegates authority to lesser divinities
Diffused monotheism (from Greek μόνος "one" and θεός "god," with Middle French diffuser, from Latin diffūsus, past participle of diffundere, from dis-
Diffused_monotheism
Mixing of fluids due to eddy currents
^{2}\phi } K 0 {\textstyle K_{0}} is the coefficient of molecular diffusivity (mass diffusivity). The objective is to find out how the laminar mean flow interacts
Eddy_diffusion
Aeration device
An air diffuser or membrane diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer air and with that
Diffuser_(sewage)
Particle behavior in systems of length less than the mean free path
with the pore wall as opposed with another molecule. The Knudsen diffusivity for diffusing species A, D K A {\displaystyle D_{KA}} is thus D K A = d u 3
Knudsen_diffusion
American actor and comedian (1951–2014)
experiencing depression, anxiety, and increasing paranoia. His autopsy found "diffuse Lewy body disease" whose symptoms professionals said were consistent with
Robin_Williams
magnetohydrodynamics which approximates the ratio of momentum diffusivity (viscosity) and magnetic diffusivity. It is defined as: P r m = R e m R e = ν η = viscous
Magnetic_Prandtl_number
Clinical variety of lepromatous leprosy
The diffuse leprosy of Lucio and Latapí, also known as diffuse lepromatous leprosy or "pretty leprosy", is a clinical variety of lepromatous leprosy. It
Diffuse leprosy of Lucio and Latapí
Diffuse_leprosy_of_Lucio_and_Latapí
Method of utilizing water in magnetic resonance imaging
The diffusivity along the principal axis, λ1 is also called the longitudinal diffusivity or the axial diffusivity or even the parallel diffusivity λ∥.
Diffusion-weighted magnetic resonance imaging
Diffusion-weighted_magnetic_resonance_imaging
Measure of the transfer of gas from the lung to red blood cells
Diffusing capacity of the lung (DL) (also known as transfer factor) measures the transfer of gas from air in the lung, to the red blood cells in lung
Diffusing_capacity
Dimensionless quantity associated with free convection of a fluid
(Pr), which describes the relationship between momentum diffusivity and thermal diffusivity: Ra = Gr × Pr. Hence it may also be viewed as the ratio of
Rayleigh_number
Dimensionless quantity related to transient heat conduction
the study of mass diffusion, in which the thermal diffusivity is replaced by the mass diffusivity. The Fourier number is used in analysis of time-dependent
Fourier_number
Loss of hair from the head or body
entire body (alopecia universalis). Skin diseases and cancer. Localized or diffuse hair loss may also occur in cicatricial alopecia (lupus erythematosus,
Hair_loss
Cooking utensil
Cooking portal A heat diffuser, flame tamer, or simmering plate (UK) is a cooking utensil that is placed on top of a burner on a cooktop to separate the
Heat_diffuser
This is a list of diffuse nebulae outside and inside the milky way galaxy in alphabetical order. Most nebulae are diffuse, meaning that they do not have
List_of_diffuse_nebulae
Medical condition cause by blood clots
Disseminated intravascular coagulation (DIC) is a condition in which blood clots form throughout the body, blocking small blood vessels. Symptoms may include
Disseminated intravascular coagulation
Disseminated_intravascular_coagulation
Autoimmune endocrine disease
Graves' disease, also known as toxic diffuse goiter, Basedow's disease or Flajani-Graves-Basedow disease, is an autoimmune disease that affects the thyroid
Graves'_disease
Ability of a material to exchange energy with surroundings
brought into contact, heat will have diffused across the boundary between the two materials. The thermal diffusivity of a material is α = λ / ( ρ c p )
Thermal_effusivity
Essential oil diffuser
Aroma lamps, or diffusers, are used to diffuse essential oils. They may project the oil into the air by heating it, letting it evaporate naturally, or
Aroma_lamp
Dimensionless parameter in fluid mechanics
Schmidt number, Sc, which expresses the ratio of the momentum diffusivity to the mass diffusivity. G z = D H L R e S c {\displaystyle \mathrm {Gz} ={D_{H}
Graetz_number
Mass diffusivity of a chemical species without a chemical potential gradient
Self-diffusion describes the diffusive motions of molecules within themselves e.g. the movement of a water molecule in water. According to the IUPAC definition
Self-diffusion
Loss of hair from areas on the body
the scalp. Hair may also be lost more diffusely over the whole scalp, in which case the condition is called diffuse alopecia areata. Alopecia areata monolocularis
Alopecia_areata
Country in West Asia
BC, an archaic form of Proto-Armenian, an Indo-European language, had diffused into the Armenian highlands. The first Armenian state of Urartu was established
Armenia
American radio network and media company
the original on November 14, 2021. Retrieved November 14, 2021. "Diffuser". Diffuser.fm. Jarvey, Natalie (January 16, 2014). "Just Jared Partners with
Townsquare_Media
Two subtypes of dementia
autopsy, his widow said he was found to have diffuse Lewy body disease, while the autopsy used the term diffuse Lewy body dementia. The vocabulary associated
Lewy_body_dementia
Extreme hypothyroidism
Myxedema (British English: myxoedema) is a term used synonymously with severe hypothyroidism, but also to describe a dermatological change that can occur
Myxedema
Projection X-ray of the chest
shadow ascending vertically and clinging to the ribs. The differential for diffuse shadowing is very broad and can defeat even the most experienced radiologist
Chest_radiograph
Self-contained underwater breathing apparatus
connection, and the Kirby-Morgan 48 SuperMask uses a clip-on "pod" system A diffuser is a component fitted over the exhaust outlet to break up the exhaled gas
Scuba_set
Type of transistor
A diffused junction transistor is a transistor formed by diffusing dopants into a semiconductor substrate. The diffusion process was developed later than
Diffused_junction_transistor
Country in South Asia
By 1200 BCE, an archaic form of Sanskrit, an Indo-European language, diffused into India from the northwest, its earliest hymns containing elements of
India
Neck swelling due to enlarged thyroid gland
consumption, metabolic changes in protein metabolism, immunologic stimulation of diffuse goitre, and ocular changes (exophthalmos). Hypothyroid people commonly
Goitre
Diseases of the space or tissue between the alveoli of the lungs
Interstitial lung disease (ILD), or diffuse parenchymal lung disease (DPLD), is a group of respiratory diseases affecting the interstitium (the tissue)
Interstitial_lung_disease
Genetic disorder
Fabry disease, also known as Anderson–Fabry disease, is a rare genetic disorder that can affect many parts of the body, including the kidneys, heart, brain
Fabry_disease
Spectroscopy technique
Diffuse reflectance spectroscopy, or diffuse reflection spectroscopy, is a subset of absorption spectroscopy. It is sometimes called remission spectroscopy
Diffuse reflectance spectroscopy
Diffuse_reflectance_spectroscopy
Mechanics concept
particle diffuses as a spheroid with two unique diffusion rates and three time constants. And if all eigenvalues are the same, the particle diffuses as a
Rotational_diffusion
Medical condition
Diffuse hemispheric glioma, H3G34 mutant (DHG) is a rare, high-grade, infiltrative WHO grade 4 brain tumor most often found in adolescents and young adults
Diffuse_hemispheric_glioma
Emission nebula in Sagittarius
The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant emission nebula with an H II region located in
Lagoon_Nebula
Diffuse optical imaging (DOI) is a method of imaging using near-infrared spectroscopy (NIRS) or fluorescence-based methods. When used to create 3D volumetric
Diffuse_optical_imaging
the Midwest. In the second half of the 20th century, Mexican Americans diffused throughout the U.S., especially into the Midwest and Southeast, though
History_of_Mexican_Americans
Combination of the diffusion and convection (advection) equations
transfer), D is the diffusivity (also called diffusion coefficient), such as mass diffusivity for particle motion or thermal diffusivity for heat transport
Convection–diffusion_equation
Type of wind turbine
A diffuser-augmented wind turbine (DAWT) is a wind turbine modified with a cone-shaped wind diffuser that is used to increase the efficiency of converting
Diffuser-augmented wind turbine
Diffuser-augmented_wind_turbine
Synthetic polymer
ratio of its regular transmittance to diffuse transmittance is negligibly small, so light transmitted through a diffuser (PTFE sheet) radiates like Lambert's
Polytetrafluoroethylene
Concept in probability and statistics
}a_{k}a_{l}K_{XX}(\tau +k-l).\,} Autocovariance can be used to calculate turbulent diffusivity. Turbulence in a flow can cause the fluctuation of velocity in space
Autocovariance
Time that marks the beginning of twilight before sunrise
Sun's upper limb breaks the horizon), when direct daylight outshines the diffused light. "Dawn" derives from the Old English verb dagian, "to become day"
Dawn
End of a river where it flows into a larger body of water
overflow. Alongside these advective transports, inflowing water will also diffuse. At the mouth of a river, the change in flow conditions can cause the river
River_mouth
Physiological phenomenon involving the hardening and enlargement of the penis
oxide from endothelial cells in the trabecular arteries. Nitric oxide diffuses to the smooth muscle of the arteries (called trabecular smooth muscle)
Erection
Function describing an electron in an atom
certain series of alkali metal spectroscopic lines as sharp, principal, diffuse, and fundamental. Orbitals for ℓ > 3 continue alphabetically (g, h, i,
Atomic_orbital
Natural physical entity in space
ice and dust, and an object in reference to the entire comet with its diffuse coma and tail. According to NASA astrophysicists, early astronomical objects
Astronomical_object
Book by Mancur Olson
concentrated benefits versus diffuse costs. Its central argument is that concentrated minor interests will be overrepresented and diffuse majority interests trumped
The Logic of Collective Action
The_Logic_of_Collective_Action
Fifth planet from the Sun
believed to consist of an outer mantle of fluid metallic hydrogen and a diffuse inner core of denser material. The ongoing contraction of Jupiter's interior
Jupiter
Medical condition
Diffuse idiopathic skeletal hyperostosis (DISH) is a condition characterized by abnormal calcification/bone formation (hyperostosis) of the soft tissues
Diffuse idiopathic skeletal hyperostosis
Diffuse_idiopathic_skeletal_hyperostosis
Device to reflect radiation back to its source
Being directed, the retroflector's reflection is brighter than that of a diffuse reflector. Corner reflectors and cat's eye reflectors are the most used
Retroreflector
Immune disorder caused by proliferation of mast cells
body but especially on the upper arms, legs, and trunk Diffuse cutaneous mastocytosis has diffuse involvement in which the entire integument may be thickened
Mastocytosis
Medical condition
Focal and diffuse brain injury are ways to classify brain injury: focal injury occurs in a specific location, while diffuse injury occurs over a more
Focal and diffuse brain injury
Focal_and_diffuse_brain_injury
Concept in psychology and psychotherapy
by Salvador Minuchin to describe families where personal boundaries are diffused, sub-systems undifferentiated, and over-concern for others leads to a loss
Enmeshment
American rock band
Diffuser is an American rock band from Long Island, New York, that was formed in 1994 by Tomas Costanza (lead vocals and guitar), Anthony Cangelosi (guitar)
Diffuser_(band)
Preparing food using heat
significantly) the temperature difference between the two objects. Thermal diffusivity is the combination of specific heat, conductivity, and density that determines
Cooking
Reflection which reverses the direction of a wave, particle, or signal
or signals back to the direction from which they came. It is usually a diffuse reflection due to scattering, as opposed to specular reflection as from
Backscatter
FTIR spectroscopy applied on powder samples without prior preparation
Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is an infrared spectroscopy sampling technique used on powder samples without prior
Diffuse reflectance infrared Fourier transform spectroscopy
Diffuse_reflectance_infrared_Fourier_transform_spectroscopy
Medical condition
plasma proteins, high alveolar surface tension, lung damage, hypervolemia). Diffuse alveolar hemorrhage is bleeding from many alveoli throughout the lungs
Pulmonary_hemorrhage
State of balance between external forces on a fluid and internal pressure gradient
dense shell, whereas gravity prevents the pressure-gradient force from diffusing the atmosphere into outer space. In general, it is what causes objects
Hydrostatic_equilibrium
Fibrous material from trees or other plants
it is customary to divide them into two large classes, ring-porous and diffuse-porous. In ring-porous species, such as ash, black locust, catalpa, chestnut
Wood
How an organism receives and responds to painful stimuli
In physiology, nociception /ˌnəʊsɪˈsɛpʃ(ə)n/, also nocioception (from Latin nocere 'to harm/hurt'), is the sensory nervous system's process of encoding
Nociception
Human joint disease
(extra-articular) – and growth pattern (localized or diffuse) of the tumor(s). Localized and diffuse subsets of TGCT differ in their prognosis, clinical
Tenosynovial_giant_cell_tumor
Thermal motion of liquid or gas particles at temperatures above absolute zero
law NA=−DABdCAdx (only applicable for no bulk motion) where D is the diffusivity of A through B, proportional to the average molecular velocity and, therefore
Molecular_diffusion
to expand in all directions without rupture. Mass diffusivity: Ability of one substance to diffuse through another Plasticity: Ability of a material to
List_of_materials_properties
Set of adjacent groups
value of an electron's azimuthal quantum number: sharp (0), principal (1), diffuse (2), and fundamental (3). Succeeding notations proceed in alphabetical
Block_(periodic_table)
Green pigments found in plants, algae and bacteria
Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types
Chlorophyll
Distribution of an uncertain quantity
to keep inferences in a reasonable range. An uninformative, flat, or diffuse prior expresses vague or general information about a variable. The term
Prior_probability
Optical Phenomenon
radiant intensity or luminous intensity from an ideal diffusely reflecting surface or ideal diffuse radiator is directly proportional to the cosine of the
Lambert's_cosine_law
Spreading of sound energy
perfectly diffusive sound space is one in which the reverberation time is the same at any listening position. Most interior spaces are non-diffusive; the reverberation
Diffusion_(acoustics)
Patch of hair growing in a circular direction around a visible center point
well as on the head, and can be either clockwise, counterclockwise or diffuse in direction of growth. Hair whorls on the head (parietal whorls) have
Hair_whorl
Biological process to convert light into chemical energy
releases CO2 from dissolved hydrocarbonate ions (HCO− 3). Before the CO2 can diffuse out, RuBisCO concentrated within the carboxysome quickly sponges it up
Photosynthesis
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