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Topics referred to by the same term
Look up phase angle in Wiktionary, the free dictionary. Phase angle may refer to: Phase (waves), the angular displacement of a sinusoid from a reference
Phase_angle
Angle between the light incident on, and reflected from, an astronomical object
In observational astronomy, phase angle is the angle between the light incident onto an observed object and the light reflected from the object. In the
Phase_angle_(astronomy)
Complex number representing a particular sine wave
phasor notation. Given the vectors v 1 = A 1 ∠ θ 1 {\displaystyle v_{1}=A_{1}\angle \theta _{1}} and v 2 = A 2 ∠ θ 2 {\displaystyle v_{2}=A_{2}\angle
Phasor
Elapsed fraction of a cycle of a periodic function
phase (symbol φ or ϕ) of a wave or other periodic function F {\displaystyle F} of some real variable t {\displaystyle t} (such as time) is an angle-like
Phase_(waves)
Electronic module
In phase angle control, thyristors are used to selectively pass only a part of each AC cycle through to the load. By controlling the phase angle or trigger
Voltage_controller
Form of alternating current
used to approximate a three-phase system in a static phase converter, but the voltage and phase angle of the additional phase may only be useful for certain
Three-phase_electric_power
Electronic control system
electric grid as a function of the phase angle of the voltage they generate relative to the grid's voltage phase angle, which is measured using a PLL. In
Phase-locked_loop
Method for estimating body composition
water, and muscle mass. The measurements also produce the electrical phase angle angle of the body. BIA actually determines the electrical impedance, or
Bioelectrical impedance analysis
Bioelectrical_impedance_analysis
Electrical equipment
impedance (replacing series capacitors) or phase-angle compensation (replacing generator droop-control or phase-shifting transformers). While other traditional
Flexible AC transmission system
Flexible_AC_transmission_system
Device measuring electrical waves on a power grid
A phasor measurement unit (PMU) is a device used to estimate the magnitude and phase angle of an electrical phasor quantity (such as voltage or current)
Phasor_measurement_unit
Means of distributing alternating-current electrical power
currents with a defined phase between the voltage waves in each conductor. Early systems used 4 wire two-phase with a 90° phase angle, but modern systems
Polyphase_system
Device for AC electrical power systems
the same frequency, and the phase angle between the systems must be zero (and two polyphase systems must have the same phase sequence). Synchroscopes measure
Synchroscope
Parameter of electronic amplifiers
output signal will be in phase with its input signal though lagging behind it by 360°, i.e., the output will have a phase angle of −360°. This lag is of
Phase_margin
Electronic method of transmitting information with a carrier wave
instantaneous phase of a carrier wave. Phase modulation is one of the two principal forms of angle modulation, together with frequency modulation. In phase modulation
Phase_modulation
Specialised type of power transformer
A phase angle regulating transformer, phase angle regulator (PAR, American usage), phase-shifting transformer, phase shifter (American usage), or quadrature
Quadrature_booster
Method for power limiting
Phase-fired control (PFC), also called phase cutting or phase-angle control, is a method for power limiting, applied to AC voltages. It works by modulating
Phase-fired_controller
Electrically operated switch
alternating current (AC), some method is used to split the flux into two out-of-phase components which add together, increasing the minimum pull on the armature
Relay
Resistive and inductive circuit
{R^{2}+\left(\omega L\right)^{2}}}}\,,} and the phase angles are: ϕ L = ∠ H L ( s ) = tan − 1 ( R ω L ) {\displaystyle \phi _{L}=\angle H_{L}(s)=\tan ^{-1}\left({\frac
RL_circuit
Optical effect
Earth. At zero phase angle, the Sun is directly behind the observer and the object is directly ahead, fully illuminated. As the phase angle of an object
Opposition_surge
Angle in geometric optics
small grazing angle, usually measured in milliradians. In optics, there is Lloyd's mirror. Effect of Sun angle on climate Phase angle (astronomy) Plane
Angle_of_incidence_(optics)
Chronic sleep disorder
period—a change in phase angle of several hours; DSPD patients may have a reduced capacity to achieve such a change in phase angle in response to entrainment
Delayed_sleep_phase_disorder
SI derived unit of angle
unit is defined in the SI as the coherent unit for plane angle, as well as for phase angle. Angles without explicitly specified units are generally assumed
Radian
Shape of the Moon's sunlit portion as viewed from Earth
longitude is at an angle to the Sun (as viewed from the center of the Earth) of 0°, 90°, 180°, and 270° respectively. Each of these phases appears at slightly
Lunar_phase
Figure formed by two rays meeting at a common point
Irrational angle Phase (waves) Protractor Solid angle Spherical angle Subtended angle Tangential angle Transcendent angle Trisection Zenith angle This approach
Angle
Power in alternating current systems
the magnitude of complex power S: volt-ampere (VA); Phase of voltage relative to current, φ: the angle of difference (in degrees) between current and voltage;
AC_power
Part of planet seen to reflect sunlight
the period of time during which it occurs. The phase is determined by the phase angle, which is the angle between the planet, the Sun and the Earth. The
Planetary_phase
Measure of the luminosity of celestial objects
described by the phase angle. This relationship is referred to as the phase curve. The absolute magnitude is the brightness at phase angle zero, an arrangement
Absolute_magnitude
Bulk movement of electrical energy
cosine of the phase angle of the voltage and current at the ends. This angle varies depending on system loading. It is undesirable for the angle to approach
Electric_power_transmission
Designation of electrical transformer configuration
configurations of three-phase transformers. The vector group designation indicates the windings configurations and the difference in phase angle between them. For
Vector_group
System of identifying electrical power devices
76 - DC Overcurrent Relay 77 - Telemetering Device, Speed Sensor 78 - Phase Angle Measuring or Out-of-Step Protective Relay 78V - Loss of Mains 79 - AC
ANSI_device_numbers
Rate at which electrical energy is transferred by an electric circuit
amperes θ = θv − θi is the phase angle by which the voltage sine wave leads the current sine wave, or equivalently the phase angle by which the current sine
Electric_power
Ratio of a celestial body's brightness to that of a Lambertian ideal
phase angle) to that of an idealized flat, fully reflecting, diffusively scattering (Lambertian) disk with the same cross-section. (This phase angle refers
Geometric_albedo
Control system component
If the phase angle is negative for all signal frequencies in the network then the network is classified as a lag network. If the phase angle is positive
Lead–lag_compensator
Electrical engineering concept
instantaneous frequency of a signal "as the time derivative of the signal's phase angle." In frequency modulation, instantaneous frequency describes the frequency
Instantaneous phase and frequency
Instantaneous_phase_and_frequency
Graph of the frequency response of a control system
the frequency, the higher the attenuation. The phase Bode plot is obtained by plotting the phase angle of the transfer function given by arg H lp (
Bode_plot
the phase angle, ϕ, and is the change in true anomaly required between the spacecraft's current position to the final position. The phase angle can be
Orbit_phasing
Angle between a liquid–vapor interface and a solid surface
The contact angle (symbol θC) is the angle between a liquid surface and a solid surface where they meet. More specifically, it is the angle between the
Contact_angle
Data visualization technique
visualization. This example of the amplitude with the colors showcasing the phase angle can be hard to interpret with the entire rainbow of colors. In this case
Heat_map
Numerical analysis of electric power flow
information obtained from the power-flow study is the magnitude and phase angle of the voltage at each bus, and the real power and reactive power flowing
Power-flow_study
Fraction of incident light reflected by an astronomical body
the phase integral and is given in terms of the directional scattered flux I(α) into phase angle α (averaged over all wavelengths and azimuthal angles) as
Bond_albedo
Spatial frequency of a wave
(m−1). Angular wavenumber, defined as the wave phase divided by length, is a quantity with dimension of angle per length and SI units of radians per metre
Wavenumber
Aerofoil; individual component of a turbine disc
slot geometry (i.e. cylindrical, shaped holes or slots) and injections angle. A United States Air Force program in the early 1970s funded the development
Turbine_blade
amplifier output stage which manifests as heating in the output devices. The phase angle varies most near resonance in moving coil loudspeakers. If this point
Electrical characteristics of dynamic loudspeakers
Electrical_characteristics_of_dynamic_loudspeakers
Transformer used to scale alternating current, used as sensor for AC power
diagrams show accuracy parallelograms on a grid incorporating magnitude and phase angle error scales at the CT's rated burden. Items that contribute to the burden
Current_transformer
Electric power transmission system
power flow through an HVDC link can be controlled independently of the phase angle between source and load, it can stabilize a network against disturbances
High-voltage_direct_current
Description of an astronomical object's brightness as a function of phase angle
In astronomy, a phase curve describes the brightness of a reflecting body as a function of its phase angle (the arc subtended by the observer and the Sun
Phase_curve_(astronomy)
Ratio of active power to apparent power
the circuit. If θ is the phase angle between the current and voltage, then the power factor is equal to the cosine of the angle, cos θ {\displaystyle
Power_factor
Machine that converts electrical energy into mechanical energy
of motion output. They can be brushed or brushless, single-phase, two-phase, or three-phase, axial or radial flux, and may be air-cooled or liquid-cooled
Electric_motor
values ±1 and correspond to square waves with a phase shift of π/2. These are also known as the angle addition and subtraction theorems (or formulae)
List of trigonometric identities
List_of_trigonometric_identities
Technology of power electronics
(zero-crossing), effectively reducing the distortion. Phase-Angle Control: Various circuits exist to implement a phase-angle control on different waveforms, such as
Power_electronics
Concept in electrical engineering
diagrams that VS does not equal VR in magnitude or phase angle. The diagrams show that the phase angle of current in the line affects voltage regulation
Voltage_regulation
Difference between phase angles
p-polarized light reflecting off glass at glancing angle, beyond the Brewster angle, the phase change is 0°. The phase changes that take place upon reflection play
Reflection_phase_change
NASA sample-return mission to Comet 81P/Wild 2 (1999–2011)
approaching at a solar phase angle of 70 degrees, reaching a minimum angle of 3 degrees near closest approach and departing at a phase angle of 110 degrees.
Stardust_(spacecraft)
Ratio of how much light is reflected back from a body
The study of albedos, their dependence on wavelength, lighting angle ("phase angle"), and variation in time composes a major part of the astronomical
Albedo
Type of AC single-phase induction motor
is from the unshaded to the shaded (ring) side of the pole. Since the phase angle between the shaded and unshaded sections is small, shaded-pole motors
Shaded-pole_motor
Thermodynamic cycle that includes the basic Stirling engine
and gamma engines, generally the phase angle difference between the piston motions is not the same as the phase angle of the volume variations. However
Stirling_cycle
light scattered at a small angle relative to the solar light (phase angle close to 180°). Off opposition means that the angle between the object-Sun direction
Rings_of_Uranus
Multi-lobed plane curve
a sinusoid specified by either the cosine or sine functions with no phase angle that is plotted in polar coordinates. Rose curves or "rhodonea" were
Rose_(mathematics)
Phase of a cycle
the Hannay angle. It can be seen in the conical intersection of potential energy surfaces and in the Aharonov–Bohm effect. The geometric phase around the
Geometric_phase
Electronic test equipment that measures inductance, capacitance, and resistance
of these the meter can determine the magnitude of the impedance. The phase angle between the voltage and current is also measured in more advanced instruments;
LCR_meter
light, and bright in forward-scattered light; the transition occurs at a phase angle near 60°. The leading hypothesis regarding the spokes' composition is
Rings_of_Saturn
Delays experienced through a linear time-invariant system
easier to achieve than a flat phase delay. In an angle-modulation system—such as with frequency modulation (FM) or phase modulation (PM)—the (FM or PM)
Group_delay_and_phase_delay
Electrical power regulating system
established. The slack bus is the only bus for which the system reference phase angle is defined. From this, the various angular differences can be calculated
Slack_bus
Unitary matrix containing information on the weak interaction
used three angles ( θ1, θ2, θ3 ) and a CP-violating phase angle ( δ ). θ1 is the Cabibbo angle. For brevity, the cosines and sines of the angles θk are denoted
Cabibbo–Kobayashi–Maskawa matrix
Cabibbo–Kobayashi–Maskawa_matrix
Topics referred to by the same term
Phase curve may refer to: Phase curve (astronomy) is the brightness of a reflecting body as a function of its phase angle. Phase response curve is the
Phase_curve
being perfectly spherical, and/or atmospheric resistance. phase angle The elongation or angle between an orbiting body and the Sun as viewed from a particular
Glossary_of_astronomy
Technique to find image offset
a linear least squares (LLS) fit of the phase angles to a planar model. The long latency of the phase angle computation in these methods is a disadvantage
Phase_correlation
Mechanics analogue of the geometric phase
In classical mechanics, the Hannay angle is a mechanics analogue of the geometric phase (or Berry phase). It was named after John Hannay of the University
Hannay_angle
Electrical device for reactive power compensation
The controllable parameters of the UPFC are reactance in the line, phase angle and voltage. The UPFC concept was described in 1995 by L. Gyugyi of Westinghouse
Unified_power_flow_controller
Type of spring
the opposite direction, proportional to the amount (measurable like an angle, but theoretically capable of exceeding 360° or 2π radians) it is twisted
Torsion_spring
American space project
mapping phase of the mission. The dynamic range was 15,000. The signal-to-noise ratio varied from 25–87 depending on the surface albedo and phase angle, with
Clementine_(spacecraft)
Mechanical component that converts rotational motion to reciprocal motion
result in a bent valve if it gets struck by the piston. The timing (phase angle) of the camshaft relative to the crankshaft can be adjusted to shift
Camshaft
Electromechanical device
an absolute encoder indicates the current shaft position, making it an angle transducer. The output of an incremental encoder provides information about
Rotary_encoder
Complete reflection of a wave
is the angle of incidence, and θc is the critical angle arcsin (1/n). These equations show that each phase advance is zero at the critical angle (for which
Total_internal_reflection
Circuit used to measure inductance
the principle that the positive phase angle of an inductive impedance can be compensated by the negative phase angle of a capacitive impedance when put
Maxwell_bridge
Process in power generation
voltage, frequency, phase sequence, phase angle, and waveform to that of the system to which it is being synchronized. Waveform and phase sequence are fixed
Synchronization (alternating current)
Synchronization_(alternating_current)
Medical evaluation method
The values are also generally higher during acute hyperventilation. Phase Angle - Phi - Normal breathing involves a combination of both thoracic and
Respiratory inductance plethysmography
Respiratory_inductance_plethysmography
Mechanisms for smoothly transmitting rotation through a bend in a drive shaft
scissor mechanism to bisect the angle between the input and output shafts and to maintain the joints at a relative phase angle of zero. The alignment ensures
Constant-velocity_joint
Algorithm on pulse-width modulation
voltages vary as a pulsed sinusoid, with each leg offset by 120 degrees of phase angle. To implement space vector modulation, a reference signal Vref is sampled
Space_vector_modulation
Information storage system
form of stimulus-response patterns where information is presented by phase angle orientations of complex numbers on a Riemann surface. A very large number
Holographic associative memory
Holographic_associative_memory
Topics referred to by the same term
Fourier transform, the angle of a complex coefficient representing the phase of one sinusoidal component The argument or angle of complex numbers is sometimes
Phase
Kuiper belt object
combined effects of Varuna's ellipsoidal shape, rotation, and varying phase angle. Geometric models for Varuna's changing amplitude have provided several
20000_Varuna
Phase synchronization is the process by which two or more cyclic signals tend to oscillate with a repeating sequence of relative phase angles. Phase synchronisation
Phase_synchronization
States of matter for water as a solid
hydrogen atoms in the water molecule (in the gas phase), which is 105°. This tetrahedral bonding angle of the water molecule essentially accounts for the
Phases_of_ice
Arctangent function with two arguments
{\displaystyle \operatorname {atan2} (y,x)} is the argument (also called phase or angle) of the complex number x + i y . {\displaystyle x+iy.} (The argument
Atan2
Sixth planet from the Sun
the fact that dark gaps in the rings are bright when viewed at a high phase angle (towards the Sun), meaning that they contain fine light-scattering material
Saturn
Type of electrical switch
difference less than 5%, frequency difference less than 0.2 Hz, and maximum phase angle between the sources of 5 degrees. This means the engine driving the generator
Transfer_switch
single-crystal electron diffraction data or structure factor amplitude and phase angle information from Fourier transforms of HRTEM images of crystallites.
Crystallographic_database
Aviation navigation system
FM 30 Hz components are detected and then compared to determine the phase angle between them. The VOR signal also contains a modulated continuous wave
VHF_omnidirectional_range
Validation of Impedance Spectra
in the Z-HIT the impedance modulus is computed from the course of the phase angle (or vice versa). The main practical advantage of Z-HIT relationships
Z-HIT
Ratio used in material engineering
{\displaystyle \tan \delta } can also be visualized as the tangent of the phase angle ( δ {\displaystyle \delta } ) between the storage and loss modulus. Tensile:
Dynamic_modulus
Influence on an oscillating physical system which reduces or prevents its oscillation
units of the independent variable t; φ {\displaystyle \varphi } is the phase angle at t = 0; ω {\displaystyle \omega } is the angular frequency. Other important
Damping
Reflection which reverses the direction of a wave, particle, or signal
in astronomy, backscattered light is that which is reflected with a phase angle of less than 90°. In other cases, the scattering intensity is enhanced
Backscatter
Korean-born artist and musician
1960-61-present), Live Performances in a setting of Abstract #1 from Quadrilateral Phase Angle Traversals, Marian Zazeela and Environmental Composition 2017 # 1, Jung
Jung_Hee_Choi
Type of solid-state switch
Thyristors can be used as the control elements for phase-angle-triggered controllers, also known as phase-fired controllers. They can also be found in power
Thyristor
Angle of complex number about real axis
complex analysis), the argument of a complex number z, denoted arg(z), is the angle between the positive real axis and the line joining the origin and z, represented
Argument_(complex_analysis)
Process of altering the timing of a valve lift event
engine speeds and conditions. The simplest form of VVT is cam-phasing, whereby the phase angle of the camshaft is rotated forwards or backwards relative to
Variable_valve_timing
Measure in 3-dimensional geometry
In geometry, a solid angle (symbol: Ω) is a measure of the amount of the field of view from some particular point that a given object covers. That is
Solid_angle
Equations of light transmission and reflection
the interface. The phase shift of the reflected wave on total internal reflection can similarly be obtained from the phase angles of rp and rs (whose
Fresnel_equations
Coal-fired power plant in Burshtyn, Halych Raion, Ivano-Frankivsk Oblast, Ukraine
the European grid since 2003. The power plant holds the frequency and phase angle in the Island. The power plant has a 400 kV connection to the Hungarian
Burshtyn_TPP
PHASE ANGLE
PHASE ANGLE
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
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
Phase; Time of Day
Girl/Female
Hindu
Art, Phases of Moon
Boy/Male
English American
Huntsman.
Boy/Male
American, Australian, British, Chinese, Christian, English, French
Huntsman; Hunter
Girl/Female
Hindu
Phases of Moon
Girl/Female
Tamil
Shashikala | ஷஷிகலா
Phases of Moon
Shashikala | ஷஷிகலா
Male
French
French form of Latin Stephanus, STÉPHANE means "crown."
Girl/Female
Indian, Telugu
A Phase of Life; Childhood
Girl/Female
Tamil
Art, Phases of Moon
Girl/Female
Indian
Phases of Quran
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
Hindu
Art, Phases of Moon
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’.
Male
English
Middle English surname (of Norman French origin) transferred to forename use, CHASE means "hunter."Â
Boy/Male
German
Chase; Hunt
Girl/Female
Tamil
Kala Devi | கலா தேவீ
Art, Phases of Moon
Kala Devi | கலா தேவீ
Girl/Female
Tamil
Phase, Time of day
Girl/Female
Indian, Telugu
Phrase of Music
Boy/Male
Hindu, Indian
Gods Prayer; Sanskrit Phrase
PHASE ANGLE
PHASE ANGLE
Girl/Female
Welsh
Legendary daughter of KyvwIch.
Boy/Male
Hindu, Indian
Breath
Boy/Male
Tamil
Boy/Male
Assamese, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Mythological, Sanskrit, Telugu
Lord Vishnu
Girl/Female
Tamil
Girl/Female
Indian
Female servant of lower rank
Girl/Female
Indian
Girl/Female
Hindu, Indian, Tamil
Worship
Boy/Male
Anglo, British, English
Lives Near the Ash Tree Brook
Male
Hungarian
Hungarian form of Greek Markos, MÃRK means "defense" or "of the sea."
PHASE ANGLE
PHASE ANGLE
PHASE ANGLE
PHASE ANGLE
PHASE ANGLE
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.
n.
The liberty or franchise of having a chase; free chase.
p. pr. & vb. n.
of Chase
v. t.
To chase.
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.
pl.
of Pease
pl.
of Phase
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.
a.
Resembling prase.
pl.
of Pease
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.
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.
a.
Without a phase, or visible form.
v. i.
To give chase; to hunt; as, to chase around after a doctor.
n.
Pulse; pease.
p. pr. & vb. n.
of Phrase
imp. & p. p.
of Phrase
n.
See Phase.
n.
Any appearance or aspect of an object of mental apprehension or view; as, the problem has many phases.