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Physical process of transition between basic states of matter
In physics, chemistry and biology, a phase transition (or phase change) is the physical process of transition between one state of a medium and another
Phase_transition
Topics referred to by the same term
Phase change may refer to: Phase transition, the transformation from one thermodynamic state to another Phase-change memory, a type of random-access memory
Phase_change
Novel computer memory type
Phase-change memory (also known as PCM, PCME, PRAM, PCRAM, OUM (ovonic unified memory) and C-RAM or CRAM (chalcogenide RAM)) is a type of non-volatile
Phase-change_memory
Difference between phase angles
A phase change sometimes occurs when a wave is reflected, specifically from a medium with faster wave speed to the boundary of a medium with slower wave
Reflection_phase_change
Substance with high latent heat of melting or solidifying
A phase-change material (PCM) is a substance which releases/absorbs sufficient energy at phase transition to provide useful heat or cooling. Generally
Phase-change_material
Elapsed fraction of a cycle of a periodic function
In physics and mathematics, the phase (symbol φ or ϕ) of a wave or other periodic function F {\displaystyle F} of some real variable t {\displaystyle
Phase_(waves)
Transition in plants
Vegetative phase change is the juvenile-to-adult transition in plants. This transition is distinct from the reproductive transition and is most prolonged
Vegetative_phase_change
Measure of change in amplitude and phase of a wave
sinusoidal electromagnetic wave is a measure of the change undergone by the amplitude and phase of the wave as it propagates in a given direction. The
Propagation_constant
System that transfers heat from one space to another
Therefore, they are regarded as a key technology for limiting climate change by phasing out fossil fuels. They are also a crucial element of systems which
Heat_pump
Chart used to show conditions at which physical phases of a substance occur
the fixed pattern of the solid phase and enter the liquid phase. A similar concept applies to liquid–gas phase changes. Water is an exception which has
Phase_diagram
Rewritable optical disc standard
Phase-change Dual (or Phase-change Disc, commonly abbreviated as PD) is a rewritable optical disc format and storage standard introduced by Matsushita
Phase-change_Dual
The phase-change incubator is a low-cost, low-maintenance incubator that tests for microorganisms in water supplies. It uses small balls containing a chemical
Phase-change_incubator
Fluid used to maximize thermal contact
Thermal pastes that undergo phase transition at working temperatures have been made. Instead of the regular meaning of phase-change material (a material that
Thermal_paste
Biogeochemical cycle for movement of water on Earth
transfers between different phases. The energy released or absorbed during a phase change can result in temperature changes. Heat is absorbed as water
Water_cycle
Process of removing waste heat from a computer
(two phase cooling) to cool the CPU. Phase-change cooling is an extremely effective way to cool the processor. A vapor compression phase-change cooler
Computer_cooling
Sweeping audio effect
the phase. The amount of change in phase depends on the frequency. When signals from the two paths are mixed, the frequencies that are out of phase will
Phaser_(effect)
Resolution-improving photomask
attenuated phase shift masks. A phase-shift mask relies on the fact that light passing through a transparent media will undergo a phase change as a function
Phase-shift_mask
Technologies to store thermal energy
and water and insulated at the top, as well as eutectic solutions and phase-change materials. Other sources of thermal energy for storage include heat or
Thermal_energy_storage
Method of reusing thermal energy in a building
containing a fluid which undergoes a constant phase change to transfer heat. The fluid within the pipes changes from a fluid to a gas in the evaporator section
Heat_recovery_ventilation
Optical microscopy technique
in light passing through a transparent specimen to brightness changes in the image. Phase shifts themselves are invisible, but become visible when shown
Phase-contrast_microscopy
Change of minerals in pre-existing rocks without melting into liquid magma
garnet are resistant to mylonitization. Kyanite Andalusite Sillimanite Phase change metamorphism is the creating of a new mineral with the same chemical
Metamorphism
Material put between components to enhance thermal coupling
"Full Metal TIMs". Power Systems Design Europe. "Phase Change". Laird Technologies. "Phase Change Metal TIMs | Thermal Interface Materials". indiumcorporation
Thermal_interface_material
Description of constant-temperature solid phase changes
one phase to another at constant temperature. It can specifically describe the kinetics of crystallisation, can be applied generally to other changes of
Avrami_equation
Computer memory that does not lose its contents after being turned off
other companies are developing. Phase-change memory stores data in chalcogenide glass, which can reversibly change the phase between the amorphous and the
Non-volatile_memory
Physical quantity of hot and cold
magnitude of the change. For example, if the change is an increase in temperature at constant volume, with no phase change and no chemical change, then the temperature
Temperature
Enthalpy change when a substance melts
room for any associated change in volume by displacing its environment against ambient pressure. The temperature at which the phase transition occurs is
Enthalpy_of_fusion
States of matter for water as a solid
rise to different phases of ice, which have varying properties and molecular geometries. Currently, twenty-two crystalline phases have been observed
Phases_of_ice
Type of artificial neural network
which phase-change material has the ability to cumulatively respond to multiple input signals. An electrical alteration of the resistance of the phase change
Physical_neural_network
Thermodynamic phase transition energy
first-order phase transition, like melting or condensation. Latent heat can be understood as hidden energy which is supplied or extracted to change the state
Latent_heat
2014 studio album by Beck
release, Morning Phase is a "companion piece" to Beck's 2002 album Sea Change. Almost every credited musician who recorded parts for Sea Change returned to
Morning_Phase
Germanium-antimony-tellurium material
or GST) is a phase-change material from the group of chalcogenide glasses used in rewritable optical discs and phase-change memory applications
GeSbTe
Shape of the Moon's sunlit portion as viewed from Earth
A lunar phase or Moon phase is the apparent shape of the Moon's day and night phases of the lunar day as viewed from afar. Because the Moon is tidally
Lunar_phase
Type of energy transfer
heat is measured by changes in a body of known properties, for example, temperature rise, change in volume or length, or phase change, such as melting of
Heat
Type of reciprocating heat engine
be of any composition and the system may be single-phase (liquid only or gas only) or dual-phase (liquid/gas). Working fluids for external combustion
External_combustion_engine
Type of computer memory
development is phase-change RAM, or PRAM. PRAM is based on the same storage mechanism as writable CDs and DVDs, but reads them based on their changes in electrical
Non-volatile random-access memory
Non-volatile_random-access_memory
Topics referred to by the same term
Look up Phase, phase, or phases in Wiktionary, the free dictionary. Phase or phases may refer to: State of matter, or phase, one of the distinct forms
Phase
Thermic response to pressure change
Barocaloric solids undergo solid-to-solid phase change. One barocaloric material processes heat without a phase change: natural rubber. Barocaloric effects
Barocaloric_material
Concept in mathematics
conditions. At the interface between the phases (in the classical problem) the temperature is set to the phase change temperature. To close the mathematical
Stefan_problem
Transfer of heat out of an object
is removal of heat, usually resulting in a lower temperature and/or phase change. Temperature lowering achieved by any other means may also be called
Cooling
System that converts heat or thermal energy to mechanical work
of gases according to the gas laws or the properties associated with phase changes between gas and liquid states. Earth's atmosphere and hydrosphere—Earth's
Heat_engine
Refrigeration process
vapor-compression refrigeration system (VCRS), in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used
Vapor-compression refrigeration
Vapor-compression_refrigeration
Thermodynamic process in which no mass or heat is exchanged with surroundings
adiabatic and energy is added in the form of heat (Q > 0), and there is no phase change, then the temperature of the system will rise. If the system has such
Adiabatic_process
Discontinued computer memory type
began around 2012. Intel and Micron had developed other non-volatile phase-change memory (PCM) technologies previously; Mark Durcan of Micron said 3D XPoint
3D_XPoint
Substance used to reduce or regulate the temperature of a system
water reactors. The phase change effect can be intentionally used, or can be detrimental. Phase-change materials use the other phase transition between
Coolant
Phase transition from gas to solid
Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process.
Deposition_(phase_transition)
Chemical compound
or at high pH [VO4]4−. VO2 has a phase transition at 68 °C (341 K). Electrical resistivity, opacity, etc, can change by several orders of magnitude. Owing
Vanadium(IV)_oxide
Chemical compound with formula Na2SO4
E514. The high heat-storage capacity in the phase change from solid to liquid, and the advantageous phase change temperature of 32 °C (90 °F) makes this material
Sodium_sulfate
Type of data encoding
Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency carrier wave. The
Phase-shift_keying
Type of optical device
variations in the instantaneous phase of a carrier wave. The phase of a carrier signal is modulated to follow the changing voltage level (amplitude) of modulation
Electro-optic_modulator
Term in wireless communications
and phase change imposed by the channel on the signal changes. The coherence time is a measure of the minimum time required for the magnitude change or
Fading
Physical property of matter
atomic scales. Then the change in temperature will depend on the particular path that the system followed through its phase space between the initial
Heat_capacity
Soft colorless solid derived from petroleum, coal or shale oil
gram per kelvin) and a heat of fusion of 200–220 J⋅g−1. Paraffin wax phase-change cooling coupled with retractable radiators was used to cool the electronics
Paraffin_wax
Graph of the frequency response of a control system
(usually in decibels) of the frequency response, and a Bode phase plot, expressing the phase shift. As originally conceived by Hendrik Wade Bode in the
Bode_plot
Engine combustion process
assumed to have constant pressure during the initial part of the combustion phase ( V 2 {\displaystyle V_{2}} to V 3 {\displaystyle V_{3}} in the diagram
Diesel_cycle
Flow of gas and liquid in the same conduit
heated pipes and it changes to steam as it moves through the pipe. The design of boilers requires a detailed understanding of two-phase flow heat-transfer
Two-phase_flow
Optical interference pattern of concentric rings
boundary with no phase change. The reflected light undergoing internal reflection (about 4% of the total) also has no phase change. The light that is
Newton's_rings
Technology using sunlight for heat
Disadvantages include low phase-change enthalpy, low thermal conductivity, and flammability. Inorganics are advantageous with greater phase-change enthalpy, but exhibit
Solar_thermal_energy
Rocket engine operation method
is used to cool the engine's combustion chamber, picking up heat and changing phase. The now heated and gaseous fuel then powers the turbine that drives
Expander_cycle
Equipment used to transfer heat between fluids
that has a change of phase. This is usually a solid to liquid phase due to the small volume difference between these states. This change of phase effectively
Heat_exchanger
Human-caused changes to climate on Earth
Protocol, an international agreement to phase out production of ozone-depleting gases, has had benefits for climate change mitigation. Several ozone-depleting
Climate_change
Pad used for warming of parts of the body in order to manage pain
ground-up spices such as cloves and nutmeg, or even dried rose petals. Phase change materials can be used for heating pads intended to operate at a fixed
Heating_pad
Phases of Earth as seen from the Moon
Earth phase is the shape of the directly sunlit portion of Earth as viewed from the Moon (or elsewhere extraterrestrially). From the Moon, Earth phases gradually
Earth_phase
Matter which can change its physical properties in a programmable fashion
examples of programmable matter. Shape-changing and locomotion of solid objects are possible with solid-liquid phase change pumping. This approach allows deforming
Programmable_matter
Variant of DVD designed with random access in mind
memory unit such as a magnetic tape drive. DVD-RAM works by means of phase change technology which was chosen instead of magneto-optical technology (an
DVD-RAM
Complex number representing a particular sine wave
engineering, a phasor (a portmanteau of phase vector) is a complex number representing a sinusoidal function whose amplitude A and initial phase θ are time-invariant
Phasor
Season of UEFA's top-tier European club football competition
League. The season began on 7 July 2026 with qualifying, and the league phase will start on 8 September 2026. The final will be held on 5 June 2027 at
2026–27_UEFA_Champions_League
Optical disc designed for the storage of digital video
GB. It utilizes a design based on the Magneto-optical disc, but uses Phase Change technology combined with a blue violet laser. A UDO/UDO2 disc that can
Ultra_Density_Optical
Four-stage model of physiological responses to sexual stimulation
changes that take place during the plateau stage as the orgasmic platform. Orgasm is experienced by both males and females, ending the plateau phase of
Human_sexual_response_cycle
Solid material with highly ordered microscopic structure
solids are crystals. For example, when liquid water starts freezing, the phase change begins with small ice crystals that grow until they fuse, forming a polycrystalline
Crystal
Latter part of the menstrual cycle
person, but from cycle to cycle within one person. The luteal phase is characterized by changes to hormone levels, such as an increase in progesterone and
Luteal_phase
Interpretation of entropy as the change in arrangement of a system's particles
early developments, the typical example of entropy change ΔS is that associated with phase change. In solids, for example, which are typically ordered
Entropy_(order_and_disorder)
Type of computational fluid dynamic
vapor phases. This is in contrast to boiling, in which the temperature causes the phase change. There are two general categories of phase change models
Cavitation_modelling
Pressurized gas or liquid in a heat engine
(temperature change) into mechanical energy (or vice versa) by phase change and/or heat of compression and expansion. Examples using phase change include water↔steam
Working_fluid
Thermal engineering discipline concerning transfer of heat in physical systems
conduction, thermal convection, thermal radiation, transfer of energy by phase changes, and evaporative cooling. Engineers also consider the transfer of mass
Heat_transfer
American inventor and engineer
coincidental." Smith's designs include the screenless hammer mill and the phase-change incubator, and she is also involved with the application of the Malian
Amy_B._Smith
Thermal interface material
often termed a "phase change" by industrial sources, though this use must be differentiated with the regular meaning of phase-change material (a material
Thermally_conductive_pad
Ratio of the thermal resistances of a body's interior to its surface
micro-encapsulated phase-change slurries is an application where the Biot number is useful. For the dispersed phase of the micro-encapsulated phase-change slurry
Biot_number
2023–2025 group of superhero media
Disney+. The 2023 Hollywood labor disputes impacted the phase, leading to various schedule changes. It began with the film Ant-Man and the Wasp: Quantumania
Marvel Cinematic Universe: Phase Five
Marvel_Cinematic_Universe:_Phase_Five
Shift of atomic positions in a crystal structure
occurs, leading to a modification in the crystal structure during a phase change. These movements are small, usually less than their interatomic distances
Diffusionless_transformation
Optical disk technology
suitable hardware, be re-written up to 100,000 times. The CD-RW is based on phase change technology, with a degree of reflection at 15–25%, compared to 40–70%
CD-RW
Desalination technique powered by solar energy
are categorized into single-phase processes (membrane based) and phase change processes (non-membrane based). Single-phase indirect solar desalination
Solar_desalination
Ratio of sensible heat to latent heat
parameter was developed from Josef Stefan's calculations of the rate of phase change of water into ice on the polar ice caps and coined by G.S.H. Lock in
Stefan_number
Device for measuring a physical quantity
calorimeter, phase change calorimeter for example an ice calorimeter or any other calorimeter observing a phase change or using a gauged phase change for heat
List_of_measuring_instruments
Branch of physics
(spatial soliton) that does not change during propagation due to a balance between dispersion and the Kerr effect (e.g. self-phase modulation for temporal and
Nonlinear_optics
Determining heat transfer in a system by measuring its other properties
changes of its state due, for example, to chemical reactions, physical changes, or phase transitions under specified constraints. Calorimetry is performed
Calorimetry
Mechanism of spontaneous phase separation
whereas a nucleated phase change begins at a discrete number of points. Spinodal decomposition occurs when a homogenous phase becomes thermodynamically
Spinodal_decomposition
Model for thermodynamic phase transitions
connection with the isotherms of the van der Waals equation to describe its phase change, in particular its vapor pressure, the liquid and vapor states that are
Maxwell_construction
Branch of thermodynamics
chemical reactions and/or phase changes such as melting and boiling. A reaction may release or absorb energy, and a phase change may do the same. Thermochemistry
Thermochemistry
Change of state of matter from a gas phase into a liquid phase
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers
Condensation
Mixture of an insoluble substance microscopically dispersed throughout another substance
larger particle size). A colloid has a dispersed phase (the suspended particles) and a continuous phase (the medium of suspension). Some colloids are translucent
Colloid
Opposition to current by inductance or capacitance
the same applied voltage. Reactance is used to compute amplitude and phase changes of sinusoidal alternating current going through a circuit element. Like
Electrical_reactance
Region of uniform physical properties
water in a glass jar, the ice cubes are one phase, the water is a second phase, and the humid air is a third phase over the ice and water. The glass of the
Phase_(matter)
Measurement method using interference of waves
two paths, then the phase difference is diagnostic of anything that changes the phase along the paths. This could be a physical change in the path length
Interferometry
Electronic method of transmitting information with a carrier wave
but as the amplitude of the message signal changes, the phase of the carrier changes correspondingly. Phase modulation is an integral part of many digital
Phase_modulation
Interferometry technique
splitting and mixing of electromagnetic waves for precise estimation of phase change and achieves the Heisenberg limit of sensitivity with fewer optical elements
SU(1,1)_interferometry
State of thermodynamic systems where no net flow of matter or energy occurs
models Non-random two-liquid model (NRTL model) - Phase equilibrium calculations UNIQUAC model - Phase equilibrium calculations Time crystal Topics in control
Thermodynamic_equilibrium
Piece of clothing to lower body temperatures
A phase-change material (PCM) cooling vest makes use of packs containing a solid material that absorbs a lot of latent heat on undergoing a phase change
Cooling_vest
Glass containing one or more of sulfur, selenium and tellurium
such as AgInSbTe and GeSbTe are used in rewritable optical disks and phase-change memory devices. They are fragile glass-formers: by controlling heating
Chalcogenide_glass
Difference in plant characteristics in juveniles compared to adults
to leaves. Heteroblastic change is thus often referred to as 'vegetative phase change' (distinct from reproductive phase change) in the plant molecular
Heteroblasty
Attachment of electronic components
eutectic temperature at which the particular solder alloy undergoes a phase change to a liquid or molten state. At this specific temperature range, the
Reflow_soldering
PHASE CHANGE
PHASE CHANGE
Girl/Female
Tamil
Art, Phases of Moon
Boy/Male
English American
Huntsman.
Girl/Female
Hindu
Art, Phases of Moon
Boy/Male
German
Chase; Hunt
Girl/Female
Indian, Telugu
A Phase of Life; Childhood
Boy/Male
American, Australian, British, Chinese, Christian, English, French
Huntsman; Hunter
Surname or Lastname
English
English : metonymic occupational name for a huntsman, or rather a nickname for an exceptionally skilled huntsman, from Middle English chase ‘hunt’ (Old French chasse, from chasser ‘to hunt’, Latin captare).Southern French : topographic name for someone who lived in or by a house, probably the occupier of the most distinguished house in the village, from a southern derivative of Latin casa ‘hut’, ‘cottage’, ‘cabin’.Thomas Chase came to MA from Chesham, Buckinghamshire, England, in the 1640s, and had many prominent descendants. Samuel Chase, born in Somerset Co., MD, in 1741, was one of the first members of the U.S. Supreme Court; Philander Chase, born in Cornish, NH, in 1741 was a prominent Episcopal clergyman, and his nephew Salmon Portland Chase (1808–73), also born in Cornish, was governor of OH, a U.S. senator, and secretary of the U.S. Treasury during the Civil War.
Girl/Female
Hindu
Phases of Moon
Girl/Female
Hindu
Art, Phases of Moon
Girl/Female
Indian, Telugu
Phrase of Music
Surname or Lastname
English
English : from Middle English pese ‘pea’, hence a metonymic occupational name for a grower or seller of peas, or a nickname for a small and insignificant person. The word was originally a collective singular (Old English peose, pise, from Latin pisa) from which the modern English vocabulary word pea is derived by folk etymology, the singular having been taken as a plural.Robert and John Pease came from Great Baddow, Essex, England, to Salem, MA, in 1634. In 1644 Robert died, leaving a son (also called Robert) who was apprenticed as a weaver in Salem. By 1646 John Pease was living on Martha’s Vineyard.
Girl/Female
Tamil
Kala Devi | கலா தேவீ
Art, Phases of Moon
Kala Devi | கலா தேவீ
Girl/Female
Tamil
Shashikala | ஷஷிகலா
Phases of Moon
Shashikala | ஷஷிகலா
Girl/Female
Tamil
Phase, Time of day
Girl/Female
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
Phase; Time of Day
Surname or Lastname
German
German : nickname for a swift runner or a timorous person, from Middle High German, Middle Low German hase ‘hare’.Jewish (Ashkenazic) : ornamental name from German Hase ‘hare’.English : from a Middle English nickname, Hase, from Old English hÄs ‘harsh, raucous, or hoarse voice’.Japanese : usually written with characters meaning ‘long valley’; habitational name from a place in Yamato (now Nara prefecture). Listed in the Shinsen shÅjiroku. Some bearers are descended from the Taira clan; they are found mainly in eastern Japan. Also pronounced Nagaya and Nagatani; the original pronunciation was Hatsuse, meaning ‘beginning of the strait’.
Girl/Female
Indian
Phases of Quran
Boy/Male
Hindu, Indian
Gods Prayer; Sanskrit Phrase
Male
French
French form of Latin Stephanus, STÉPHANE means "crown."
Male
English
Middle English surname (of Norman French origin) transferred to forename use, CHASE means "hunter."Â
PHASE CHANGE
PHASE CHANGE
Girl/Female
Muslim
Orange
Boy/Male
Hindu, Indian
Satisfied
Girl/Female
Assamese, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Tamil, Telugu
Dew Drops
Girl/Female
English
Gift of God. Aand the most common form of the name in English- speaking countries. Famous bearer:...
Girl/Female
Hindu, Indian
Fair
Male
Hebrew
(×ֲבִיהוּ×) Hebrew name ABIYHUW means "he is (my) father." In the bible, this is the name of a son of Aaron who was slain (along with his brother Nadab) by God for offering incense contrary to the law.Â
Girl/Female
Hindu
The earth
Girl/Female
Tamil
Priyanvada | பà¯à®°à®¿à®¯à®‚வதா
One who speaks nicely
Biblical
a comely man;famedman of honor, man of splendor;
Boy/Male
Muslim
Speaker. Interlocutor.
PHASE CHANGE
PHASE CHANGE
PHASE CHANGE
PHASE CHANGE
PHASE CHANGE
v. t.
A passing from one phase to another; as, a change of the moon.
v. i.
To give chase; to hunt; as, to chase around after a doctor.
v. t.
To follow as if to catch; to pursue; to compel to move on; to drive by following; to cause to fly; -- often with away or off; as, to chase the hens away.
pl.
of Phase
n.
The liberty or franchise of having a chase; free chase.
n.
A kind of joint by which an overlap joint is changed to a flush joint, by means of a gradually deepening rabbet, as at the ends of clinker-built boats.
n.
Any appearance or aspect of an object of mental apprehension or view; as, the problem has many phases.
p. pr. & vb. n.
of Phrase
v. i.
To group notes into phrases; as, he phrases well. See Phrase, n., 4.
n.
That which is exhibited to the eye; the appearance which anything manifests, especially any one among different and varying appearances of the same object.
n.
Pulse; pease.
n.
A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of illumination or form of enlightened disk; as, the phases of the moon or planets. See Illust. under Moon.
a.
Resembling prase.
n.
A brief expression, sometimes a single word, but usually two or more words forming an expression by themselves, or being a portion of a sentence; as, an adverbial phrase.
imp. & p. p.
of Phrase
n.
Any one point or portion in a recurring series of changes, as in the changes of motion of one of the particles constituting a wave or vibration; one portion of a series of such changes, in distinction from a contrasted portion, as the portion on one side of a position of equilibrium, in contrast with that on the opposite side.
n.
See Phase.
pl.
of Pease
a.
Without a phase, or visible form.
v. t.
To chase.