Resonance

Resonance
1.The quality in a sound of being deep, full, and reverberating. 2. In physics, resonance is the tendency of a system to vibrate continuously at a greater amplitude at some fequencies greater than others.
 * Definiton:**

Resonance in Air Columns
The resonant frequencies of air columns depend upon the speed of sound in air. Longitudinal pressure waves reflect from either closed or open ends to set up standing wave patterns. These two tuning forks have the same frequency and are mounted on wooden boxes that are the same size and open at one end. If we strike one tuning fork, the sound waves generated will cause the second one to vibrate. These are sometimes called sympathetic vibrations, and it happens because both tuning forks have the same frequency. If we strike an ordinary tuning fork, the sound is reasonably quiet. If we strike that same tuning fork and place it on a table or on the sound box of the mounted tuning fork, the sound is much louder. The vibrations from the tuning fork start the box vibrating which starts the air vibrating and the sound escapes out the open end. When an air column is closed at one end and open at the other it is called a closed air column. The length of the wooden box ( air column) is very important in producing a louder resonant sound with the tuning fork. Resonace relates to sound because the vibration from these air coulmns relates to how fast sound can travel in air. [] [] [] Kimberly
 * Why are tuning forks mounted to wooden boxes?**
 * Closed Air Columns**
 * How this relates to Sound**