The condition in which an object or system is subjected to an oscillating force having a frequency close to its own natural frequency
The quality in a sound of being deep, full, and reverberating
The ability to evoke or suggest images, memories, and emotions
The reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of a neighboring object
The condition in which an electric circuit or device produces the largest possible response to an applied oscillating signal, esp. when its inductive and its capacitative reactances are balanced
A short-lived subatomic particle that is an excited state of a more stable particle
The occurrence of a simple ratio between the periods of revolution of two bodies about a single primary
The state attributed to certain molecules of having a structure that cannot adequately be represented by a single structural formula but is a composite of two or more structures of higher energy