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Related Concept Videos

Shock Waves01:16

Shock Waves

2.7K
While deriving the Doppler formula for the observed frequency of a sound wave, it is assumed that the speed of sound in the medium is greater than the source's speed through it. When this condition is breached, a shock wave occurs.
When the source's speed approaches the speed of sound, constructive interference between successive wavefronts emitted by the source occurs immediately behind it. Initially, scientists believed that this constructive interference would result in such high...
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Propagation of Waves01:07

Propagation of Waves

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When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
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Standing Waves01:17

Standing Waves

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Sometimes waves do not seem to move; rather, they just vibrate in place. Unmoving waves can be seen on the surface of a glass of milk kept in a refrigerator, which is one example of standing waves. Vibrations from the refrigerator motor create waves on the milk that oscillate up and down but do not seem to move across the surface. These waves are formed or created by the superposition of two or more identical moving waves in opposite directions. The waves move through each other, with their...
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Wave Parameters01:10

Wave Parameters

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The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
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Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

2.5K
Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
2.5K
Travelling Waves01:04

Travelling Waves

7.5K
A wave is a disturbance that propagates from its source, repeating itself periodically, and is typically associated with simple harmonic motion. Mechanical waves are governed by Newton's laws and require a medium to travel. A medium is a substance in which a mechanical wave propagates, and the medium produces an elastic restoring force when it is deformed.
Water waves, sound waves, and seismic waves are some examples of mechanical waves. For water waves, the wave propagation medium is...
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Related Experiment Video

Updated: Apr 5, 2026

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
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The Osborn wave: what have we learned?

Hesham R Omar1

  • 1Internal Medicine Department, Mercy Medical Center, 1410N. Fourth Street Clinton, 52732, Clinton, IA, USA. hesham.omar@apogeephysicians.com.

Herz
|August 15, 2015
PubMed
Summary

The Osborn wave, a dome-shaped ECG deflection, is linked to hypothermia and arrhythmias. Recognizing this wave is crucial for predicting patient outcomes, especially in myocardial ischemia.

Area of Science:

  • Cardiology
  • Electrophysiology

Background:

  • The Osborn wave is an electrocardiogram (ECG) finding characterized by a dome-shaped deflection at the R-ST junction.
  • While primarily associated with hypothermia, it can also appear in non-hypothermic conditions.

Purpose of the Study:

  • To provide a comprehensive review of the Osborn wave.
  • To discuss its history, causes, diagnostic, and prognostic significance.

Main Methods:

  • Literature review of studies on Osborn waves.
  • Analysis of electrocardiographic and electrophysiologic characteristics.

Main Results:

  • Osborn waves have significant prognostic implications.
  • They are particularly important in myocardial ischemia, preceding malignant ventricular arrhythmias.
Keywords:
ArrhythmiaElectrocardiogramHypothermiaJ waveMyocardial ischemiaOsborn wave

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Conclusions:

  • Recognition of the Osborn wave is vital for healthcare providers.
  • Understanding its arrhythmogenic potential aids in patient management and risk stratification.