Since #$WavePropagation is a subset of #$Translocation, each element of #$WavePropagation has an origin (#$fromLocation) and an endpoint (#$toLocation). Translational movements (#$Movement-TranslationEvent) also have a #$toLocation and #$fromLocation, but elements of #$WavePropagation differ in that they have no #$objectMoving. Instead, there is some physical change which first occurs at the #$fromLocation and then `moves' away -- i.e., the location of occurrence changes location in a continuous fashion away from the origin. Although there is something `moving', wave phenomena are more eventlike than objectlike. For example, a sound is something that happens to the medium in which it propagates; for a given location, its structure is defined by a temporal sequence of certain #$subEvents (changes in pressure).
Elements of #$WavePropagation, though they are #$Events, are distinguishable from the events that produce them. Consider an #$Utterance event: one can reasonably discuss the sound itself without referring to the mechanism that produced it, whether that be a person, a recording, or a voice synthesizer. Therefore, Cyc distinguishes between a #$WavePropagation and its generation (#$EmittingAWave).
Some important subsets of #$WavePropagation are also subsets of #$InformationBearingEvents.
A collection of collections. Each instance of #$WavePropagationType is a specialization of #$WavePropagation (q.v). Instances of #$WavePropagationType include the collections #$ElectromagneticRadiation, #$Sound, #$VisibleLight, and #$XRay.#$WavePropagation wave propagations
guid: bf331d6f-9c29-11b1-9dad-c379636f7270
direct instance of: #$SiblingDisjointCollectionType #$SecondOrderCollection
direct specialization of: #$TemporalStuffType
direct generalization of: #$SoundWavePropagationType #$ElectromagneticRadiationType
A specialization of #$Translocation (q.v.). Each instance of #$WavePropagation is an event in which a wavelike disturbance propagates through space, with or without a medium. A wave propagation is like a translational movement (see #$Movement-TranslationEvent) in that it can have both a starting and an ending point (see #$fromLocation and #$toLocation), but differs from a translational motion in that there is no object moving (see #$objectMoving). Notable specializations of #$WavePropagation include #$ElectromagneticRadiation and #$Sound.#$EmittingAWave wave emissions **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: c10080f5-9c29-11b1-9dad-c379636f7270
direct instance of: #$DefaultDisjointScriptType #$TemporalStuffType
direct specialization of: #$Translocation
direct generalization of: #$ElectromagneticRadiation #$InformationBearingWavePropagation #$Sound #$AudibleSound
A collection of events; a subcollection of #$Emission. Each instance is an event in which a wave is emitted at a #$fromLocation. For example, Themistocles ordering his fleet to withdraw; Miles Davis playing the trumpet; an emergency flare burning by the side of the road. See also #$WavePropagation.#$ReceivingAWave receiving a wave **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: bebe7cda-9c29-11b1-9dad-c379636f7270
direct instance of: #$TemporalStuffType
direct specialization of: #$Emission #$GenerationOrConversionEvent
direct generalization of: #$EmittingSound
A specialization of #$Receiving. Each instance of #$ReceivingAWave is an event in which an instance of #$WavePropagation (q.v.) is received at some location (the location is related to the instance of #$WavePropagation by the predicate #$toLocation). Instances of #$ReceivingAWave include a CD player receiving an infrared signal from a remote control, a person hearing a sound of distant thunder, and a radio telescope receiving signals from a celestial body.
guid: bfccc722-9c29-11b1-9dad-c379636f7270
direct instance of: #$TemporalStuffType
direct specialization of: #$Receiving
A specialization of #$WavePropagation (q.v.). Each instance of #$ElectromagneticRadiation is an event that arises from the interaction of an electrical field and a magnetic field. Specializations of #$ElectromagneticRadiation include #$VisibleLight, #$RadioWaves, and #$XRays.#$VisibleLight light waves **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: c1009603-9c29-11b1-9dad-c379636f7270
direct instance of: #$WavePropagationType #$DefaultDisjointScriptType
direct specialization of: #$WavePropagation
direct generalization of: #$Light #$RadioWave #$GammaRay #$XRay
A collection of events; a subcollection of #$ElectromagneticRadiation. Every instance of #$VisibleLight is an instance of electromagnetic radiation having a wavelength approximately between 3800 and 7750 #$Angstroms, i.e., light visible to human eyes.#$RadioWave radio waves **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: bd58f608-9c29-11b1-9dad-c379636f7270
direct instance of: #$ElectromagneticRadiationType
direct specialization of: #$Light
direct generalization of: #$VisualImage
A specialization of #$ElectromagneticRadiation. Each instance of #$RadioWave is an instance of electromagnetic radiation having a wavelength in the range from approximately 1 centimeter (1x10^8 #$Angstrom) to 3,000,000 meters (3x10^18 #$Angstrom), and a frequency of approximately 10^8 #$Hertz to 10^2 #$Hertz.#$XRay x rays (wave propagations) (moves) (transfers)
guid: c100962b-9c29-11b1-9dad-c379636f7270
direct instance of: #$ElectromagneticRadiationType
direct specialization of: #$ElectromagneticRadiation
A specialization of #$ElectromagneticRadiation. Each instance of #$XRay is some electromagnetic radiation with a wavelength (see the predicate #$wavelength) ranging from about 1 #$Angstrom to 1x10^-3 #$Angstroms.#$GammaRay gamma rays **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: bf85c802-9c29-11b1-9dad-c379636f7270
direct instance of: #$ElectromagneticRadiationType
direct specialization of: #$ElectromagneticRadiation
A specialization of #$ElectromagneticRadiation. Each instance of #$GammaRay is an instance of electromagnetic radiation that has a wavelength (see the predicate #$wavelength) of less than 1x10^-2 angstroms (see the constant #$Angstrom). Low power instances of #$GammaRay overlap with high power instances of #$XRay (q.v.).#$Sound sounds (wave propagations) **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: c05ce4b7-9c29-11b1-9dad-c379636f7270
direct instance of: #$ElectromagneticRadiationType
direct specialization of: #$ElectromagneticRadiation
A specialization of #$WavePropagation. Each instance of #$Sound is an instance of wave propagation in which longitudinal pressure waves travel through matter. Notable specializations of #$Sound include #$AudibleSound, #$UltraSound, and #$Music.#$AudibleSound audible sounds **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: be99a967-9c29-11b1-9dad-c379636f7270
direct instance of: #$WavePropagationType
direct specialization of: #$WavePropagation
direct generalization of: #$AudibleSound #$UltraSound #$Utterance-IBT
guid: bd5906fc-9c29-11b1-9dad-c379636f7270#$UltraSound ultrasound **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
direct instance of: #$SoundWavePropagationType
direct specialization of: #$Sound
direct generalization of: #$SoundInformationBearingThing #$Music #$AnimalUtterance-IBT #$AnimalSound
A specialization of #$Sound. Each instance of #$UltraSound is a sound wave having a #$Frequency (q.v.) greater than 20,000 cycles per second, a frequency which is above the range of human hearing.
guid: c02c1799-9c29-11b1-9dad-c379636f7270
direct instance of: #$SoundWavePropagationType
direct specialization of: #$Sound
(#$wavelength WAVE LENGTH) means that the #$WavePropagation WAVE consists of waves having the length LENGTH. LENGTH is a #$Distance measuring one complete wave in a #$WavePropagation event.#$amplitudeOfSignal amplitude of signal **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: c10096d6-9c29-11b1-9dad-c379636f7270
direct instance of: #$BinaryPredicate
(#$amplitudeOfSignal WAVE AMP) means the distance from the average to the extremes of the signal WAVE is AMP.#$frequencyOfSignal frequency (binary predicate) (CycL predicate) (relationship) **COMMENT NOT REVIEWED** **GAFs NOT REVIEWED**
guid: be5d5b47-9c29-11b1-9dad-c379636f7270
direct instance of: #$IntervalBasedQuantitySlot
(#$frequencyOfSignal WAVE FREQ) means that the #$WavePropagation event WAVE consists of waves that occur at intervals of FREQ. FREQ is a measure of #$Frequency generally expressed as cycles per unit of time; frequency of electromagnetic radiation is standardly measured in #$Hertz.#$Frequency frequencies (quantities) (structured information sources)
guid: c10096a8-9c29-11b1-9dad-c379636f7270
direct instance of: #$BinaryPredicate
A specialization of #$Rate. Each instance of #$Frequency is the number of times something happens during some time interval. Instances of #$Frequency may be either single values (see the collection #$ScalarPointValue), such as 103 kiloHertz, or a range of values, such as #$Rarely. Note that instances of #$Frequency are important in the characterization of types of #$WavePropagation.#$Hertz hertz (unit of measure) (relationship) (mathematical concept) **GAFs NOT REVIEWED**
guid: bd58fad4-9c29-11b1-9dad-c379636f7270
direct instance of: #$DerivedNumericScalarIntervalType #$AtemporalNecessarilyEssentialCollectionType
direct specialization of: #$Rate
An instance of #$IndividualDenotingFunction and #$UnitOfFrequency. #$Hertz returns a unit of frequency in hertz when applied to a real number (see the collection #$SubLRealNumber) or a sequence of two real numbers. Hertz is the basic unit of measure for elements of #$Frequency (1 Hz=1 cycle per second). (#$Hertz NUM) denotes the frequency NUM cycles per second.
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direct instance of: #$UnitOfFrequency #$StandardUnitOfMeasure #$UnitOfMeasureNoPrefix #$Individual