Magnetic Fields Can Control Heat and Sound

Abstract

Sound is carried by periodic vibrations of atoms in gases, liquids and solids. When we talk to each other, the vocal chords of the speaker vibrate, causing the air coming from his lungs to vibrate as well. This creates sound waves, which then propagate through the air until they hit a listener s eardrums and make them vibrate as well. From these vibrations, the listener can then reconstruct the speaker s words. Sound is affected by the surroundings in which it travels and by the frequency of the sound waves. We design musical instruments to manipulate the sound waves they produce. Further, we know that there are sound waves that are outside the range of human hearing, such as those produced by a dog whistle. As physicists have researched sound both inside and outside the range of human hearing, interesting properties have been discovered.

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Document Details

Document Type
Technical Report
Publication Date
Mar 23, 2015
Accession Number
ADA614068

Entities

People

  • Joseph P. Heremans

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Acoustic Propagation
  • Energy Production
  • Engineering
  • Frequency
  • Indium Antimonides
  • Information Operations
  • Magnetic Fields
  • Magnetic Phenomena
  • Magnetic Properties
  • Materials
  • Materials Science
  • Particles
  • Sound Waves
  • Universities
  • Vibration
  • Waves

Readers

  • Acoustics.
  • Combustion Dynamics and Shock Wave Physics.
  • Speech Processing/Speech Recognition.