Why Can You Hear The Ocean In A Shell
Camila Farah
This occurs because air bounces within the shell and makes sound which varies in pitch depending on the size of the shell.
Shells sound like the ocean because the curved shape of a seashell amplifies the ambient noise or background noise that normally is too quiet to be heard. The seashell that you are holding just slightly above your ear captures this noise which resonates inside the shell. As lovely as that. Some people think it s those swooshy sounds that you hear when you listen to a seashell but that isn t true either.
A small seashell might produce a higher pitched more ocean like. The ocean can t possibly be inside the shell so the sounds of the ocean coming from the pink walls of a seashell seem like magic. Shells then happen to be incredible amplifiers on that noise. Seashell resonance happens when the seashell you are holding onto your ear absorbs the noise which then echoes inside it.
So what are you actually hearing in the shell. The resonance in turn produces the ocean sound. When you hold a seashell up to your ear you hear the quiet roar of waves crashing on a distant beach as if sounds from the shell s past environment are still echoing within it. The most likely explanation for the wave like noise is ambient noise from around you.
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Some will enter the seashell and bounce around that s called resonance. The seashell captures the noise around you and makes it resonate inside it. The sound is heard because ocean movements are similar to airflow. The sound of the ocean we hear from a shell can be traced to the ambient noise coming from the surroundings.
Because it is ubiquitous our brains filter it out and we don t normally hear it. It s all to do with sound waves.
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