Forwarded from Azazel News (Aries)
Transverse Waves
For transverse waves the displacement of the medium is perpendicular to the direction of propagation of the wave. A ripple on a pond and a wave on a string are easily visualized transverse waves.
For transverse waves the displacement of the medium is perpendicular to the direction of propagation of the wave. A ripple on a pond and a wave on a string are easily visualized transverse waves.
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Transverse waves cannot propagate in a gas or a liquid because there is no mechanism for driving motion perpendicular to the propagation of the wave.
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Longitudinal Waves
In longitudinal waves the displacement of the medium is parallel to the propagation of the wave. A wave in a "slinky" is a good visualization.
Sound waves in air are longitudinal waves.
In longitudinal waves the displacement of the medium is parallel to the propagation of the wave. A wave in a "slinky" is a good visualization.
Sound waves in air are longitudinal waves.
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Forwarded from Azazel News (Aries)
Standing Waves
The term standing wave is often applied to a resonant mode of an extended vibrating object. The resonance is created by constructive interference of two waves which travel in opposite directions in the medium, but the visual effect is that of an entire system moving in simple harmonic motion. The sketches illustrate the fundamental and second harmonic standing waves for a stretched string.
The term standing wave is often applied to a resonant mode of an extended vibrating object. The resonance is created by constructive interference of two waves which travel in opposite directions in the medium, but the visual effect is that of an entire system moving in simple harmonic motion. The sketches illustrate the fundamental and second harmonic standing waves for a stretched string.
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Forwarded from Azazel News (Aries)
Piezoelectricity is the ability of certain crystals to generate a voltage in response to applied mechanical stress. The word is derived from the Greek piezein, which means to squeeze or press. The piezoelectric effect is reversible in that piezoelectric crystals when subjected to an externally applied voltage, can change shape by a small amount.Crystals which acquire a charge when compressed, twisted or distorted are said to be piezoelectric. This provides a convenient transducer effect between electrical and mechanical oscillations. Quartz demonstrates this property and is extremely stable. Quartz crystals are used for watch crystals and for precise frequency reference crystals for radio transmitters.
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Who is doing the Homework
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I. The Radiating: called also the “Dispersing,“ the “Propulsive,“ the “Posi- tive,“ and the “Enharmonic.” see entropy
II. The Focalizing: called also the “Negative,“ the “Negative Attractive,“ the “Polarizing,“ and the “Harmonic.” see syntropy
III. The Dominant: called also the “Etheric,“ or the “Celestial.”
II. The Focalizing: called also the “Negative,“ the “Negative Attractive,“ the “Polarizing,“ and the “Harmonic.” see syntropy
III. The Dominant: called also the “Etheric,“ or the “Celestial.”
Forwarded from Aries
These, it will be noted, correspond to the three laws of being. It is not to be understood that any one of these three modes of vibration can exist independently. Each by itself is called a “current,” and all three must be present in every “stream” or “flow” of force. The relations of the currents in every flow are expressible in thirds, and it is experimentally demonstra- ble that the relations of the three are in the order named: as 33 13 : 66 23 : 100.
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Where the vibrations under this mode meet, and are maintained in a state of mutual affinity or equilibrium, there is established what is called a “neutral center,” or, as otherwise expressed, “a center of sympathetic coincidence.”
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Insomuch as every mass of matter consists thus, in fact, of vibrations in harmonic equilibrium, related by simple proportions of thirds, it follows that every mass of every description stands in harmonic relations to every other mass. This is, in part, what is meant by the sympathy of all forms of mat- ter and of motion; and it is through the study of the methods of increasing or diminishing this sympathy that we reach practical results in this field of research. At present this is best accomplished by resonance; that is, through the harmonic vibrations created by musical instruments, bringing out the acoustic world as the microscope reveals the hidden visual world.