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Related Concept Videos

Sound as Pressure Waves01:17

Sound as Pressure Waves

4.7K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
4.7K
Sound Waves01:01

Sound Waves

13.4K
Sound waves can be thought of as fluctuations in the pressure of a medium through which they propagate. Since the pressure also makes the medium's particles vibrate along its direction of motion, the waves can be modeled as the displacement of the medium's particles from their mean position.
Sound waves are longitudinal in most fluids because fluids cannot sustain any lateral pressure. In solids, however, shear forces help in propagating the disturbance in the lateral direction as well....
13.4K
Larynx01:21

Larynx

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The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
5.5K
Sound Waves: Resonance01:14

Sound Waves: Resonance

3.6K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
3.6K
Perception of Sound Waves01:01

Perception of Sound Waves

5.9K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
5.9K
Hearing01:31

Hearing

58.1K
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
58.1K

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Related Experiment Video

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Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
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Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

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Voices.

Peter Carter

    Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
    |January 15, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Recent public sector pension news highlights the financial implications of strikes. Understanding pension reforms is crucial for public employees and policymakers.

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    Area of Science:

    • Public Sector Finance
    • Labor Relations

    Background:

    • Recent industrial action by public sector employees, including teaching staff, has intensified public discourse on pension systems.
    • The sustainability and fairness of public sector pensions are under scrutiny.

    Purpose of the Study:

    • To analyze the current state of public sector pension discussions in light of recent labor actions.
    • To provide an overview of the key issues surrounding public sector retirement benefits.

    Main Methods:

    • Review of recent news coverage and public statements regarding public sector pensions.
    • Analysis of the economic and social factors influencing pension reform debates.

    Main Results:

    • The strikes have brought public sector pension liabilities to the forefront of policy discussions.
    • There is a growing demand for transparency and reform in public pension management.

    Conclusions:

    • Urgent attention is required to address the challenges facing public sector pension systems.
    • Informed policy decisions are necessary to ensure the long-term viability of these essential benefits.