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Related Concept Videos

Standing Waves09:32

Standing Waves

51.9K
Source: Arianna Brown, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA
Standing waves, or stationary waves, are waves that appear not to propagate and are produced by the interference of two waves traveling in opposite directions with the same frequency and amplitude. These waves appear to vibrate up and down with no linear movement and are most easily identified in vibrating finite media like a plucked...
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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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Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

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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...
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Standing Waves in a Cavity01:28

Standing Waves in a Cavity

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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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Modes of Standing Waves: II01:04

Modes of Standing Waves: II

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The starting point for expressing the modes of standing waves is understanding the boundary conditions that the waves must follow. The boundary conditions are derived from the physical understanding of how the standing waves are sustained, that is, how the vibrating particles of the medium behave at the boundaries imposed on them.
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end....
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Modes of Standing Waves - I01:03

Modes of Standing Waves - I

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A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
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Standing/Stationary Waves and Simple Harmonics
09:32

Standing/Stationary Waves and Simple Harmonics

Published on: April 30, 2023

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Academic tweeting in #ObGyn. Where do we stand?

Ghanshyam S Yadav1, Nupur R Nagarkatti1, Sagar O Rohondia2

  • 1Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA.

Journal of Perinatal Medicine
|September 9, 2019
PubMed
Summary

Editorial board members in obstetrics and gynecology journals show low Twitter adoption. Physician leaders in this specialty should increase their use of Twitter for academic purposes.

Keywords:
Twitteracademiasocial media

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Area of Science:

  • Medical Informatics
  • Social Media in Academia
  • Obstetrics and Gynecology

Background:

  • Twitter is a growing platform for academic discourse and scientific dissemination.
  • The utilization of Twitter by medical professionals, particularly journal editorial board members, is increasing.
  • Understanding the extent of Twitter use among leaders in obstetrics and gynecology is important for assessing its role in academic advancement.

Purpose of the Study:

  • To evaluate the current landscape of academic tweeting among editorial board members of leading obstetrics and gynecology journals.
  • To compare the online influence and Twitter activity of these editorial board members with those in other high-impact medical fields.

Main Methods:

  • Analysis of Twitter presence and activity for editorial board members of top-tier obstetrics and gynecology journals (impact factor > 4).
  • Comparison of median SparkScore™ (an online influence metric) with leading general medicine journals.
  • Statistical analysis of Twitter adoption rates and activity levels.

Main Results:

  • 38.3% of editorial board members from six high-impact obstetrics and gynecology journals had active Twitter accounts.
  • Twitter presence was significantly lower in obstetrics and gynecology compared to other medical specialties (P < 0.01).
  • Median SparkScore™ for top obstetrics and gynecology journals (24) was lower than for top general medicine journals (66) (P = 0.03).

Conclusions:

  • Editorial board members in obstetrics and gynecology are underutilizing Twitter for academic engagement compared to other medical specialties.
  • There is a significant opportunity for physician leaders in obstetrics and gynecology to leverage Twitter for scholarly communication and professional networking.
  • Increased adoption and strategic use of Twitter by these leaders could enhance the visibility and impact of the specialty.