Chapter 38

~SOUND.~

CONTENTS.--The Nature of Sound and its chief Characteristics.--The Velocity of Sound in Air and other Media.--Reflection and Refraction of Sound.--Frequency and Pitch of Notes.--Resonance and Forced Oscillations.--Analysis of Vibrations.--The Transverse Vibrations of Stretched Strings or Wires.--Pipes and other Air Cavities.--Rods.--Plates.--Membranes.--Vibrations maintained by Heat.--Sensitive Flames and Jets.--Musical Sand.--The Superposition of Waves.--INDEX.

"The work ... may be recommended to anyone desirous of possessing an EASY UP-TO-DATE STANDARD TREATISE on Acoustics."--_Literature._

"Very clearly written.... The names of the authors are a guarantee of the SCIENTIFIC ACCURACY and UP-TO-DATE CHARACTER of the work."--_Educational Times._

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