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Related Concept Videos

Sound Intensity00:58

Sound Intensity

4.8K
The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the...
4.8K
Sound Intensity Level00:53

Sound Intensity Level

4.9K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.9K
Intensity Of Electromagnetic Waves01:22

Intensity Of Electromagnetic Waves

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The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
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Intensity and Pressure of Sound Waves01:05

Intensity and Pressure of Sound Waves

1.7K
The intensity of sound waves can be related to displacement and pressure amplitudes by using their wave expressions and the definition of intensity. The critical step to achieve this is to write the power delivered by the particles on the wave as the product of force and velocity and simplify the force per unit area as the pressure. The velocity of the medium's particles can be derived from the displacement.
Unlike the time average of a sinusoidal term, which is zero since it is positive...
1.7K
IR Spectrum Peak Intensity: Amount of IR-Active Bonds00:55

IR Spectrum Peak Intensity: Amount of IR-Active Bonds

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When infrared radiation is passed through a molecule, absorption occurs if the molecule's vibration leads to a substantial change in its bond dipole moment. Transitions between vibrational energy levels, typically corresponding to infrared frequencies (4000–400 cm−1), allow absorption if the vibration significantly alters the dipole moment, making the molecule infrared active. The molecular bonds have different stretching and bending vibrations, resulting in various peaks with...
1.1K
IR Spectrum Peak Intensity: Dipole Moment01:20

IR Spectrum Peak Intensity: Dipole Moment

1.5K
The dipole moment of a bond is the product of the partial charge on either atom and the distance between them. Dipole moments influence the efficiency of IR absorption and the peak intensity. When a bond with a dipole moment is placed in an electric field, the direction of the field determines if the bond is compressed or stretched. Electromagnetic radiation consists of an electric field component that rapidly reverses direction. It follows that polar bonds are alternately stretched and...
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Related Experiment Video

Updated: Jan 31, 2026

Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice
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Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice

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High-Intensity Drinking.

Megan E Patrick1, Beth Azar1

  • 1Megan E. Patrick, Ph.D., is a research associate professor at the University of Michigan Institute for Social Research, Ann Arbor, Michigan. Beth Azar, M.A., is a science writer for Alcohol Research: Current Reviews.

Alcohol Research : Current Reviews
|December 18, 2018
PubMed
Summary
This summary is machine-generated.

High-intensity drinking, consuming double or triple standard binge levels, is increasingly recognized. Defining this behavior is crucial for understanding its social and physical impacts.

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Area of Science:

  • Alcohol research
  • Public health
  • Sociology

Background:

  • Standard binge drinking is defined as 4+ drinks for women and 5+ for men in a few hours.
  • A subset of individuals regularly exceeds these thresholds, engaging in high-intensity drinking.
  • High-intensity drinking is often linked to specific social events and celebrations.

Purpose of the Study:

  • To differentiate high-intensity drinking from standard binge drinking.
  • To establish clear definitions for high-intensity alcohol consumption.
  • To facilitate research on the influences of extreme alcohol intake.

Main Methods:

  • Literature review on existing alcohol consumption definitions.
  • Analysis of consumption patterns associated with high-intensity drinking.
  • Comparative study of high-intensity versus standard binge drinking behaviors.

Main Results:

  • Identified a distinct pattern of alcohol consumption exceeding standard binge levels.
  • Observed association of high-intensity drinking with celebratory occasions.
  • Highlighted the need for precise terminology in alcohol research.

Conclusions:

  • Standard binge drinking definitions do not encompass all high-volume alcohol consumption.
  • Establishing a definition for high-intensity drinking is essential for accurate research.
  • Further investigation into the unique factors influencing high-intensity drinking is warranted.