Why Do You Hear The Ocean In A Shell
Olivia Luz
The sound is heard because ocean movements are similar to airflow.
As lovely as that concept might be though it s only a metaphor. The seashell captures the noise around you and makes it resonate inside it. 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 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. The answer is that you are hearing the local noises already around you but altered by the shell thanks to some clever physics. The most likely explanation for the wave like noise is ambient noise from around you. Another common explanation for the rushing sound in a seashell is that you re hearing the flow of your own blood through blood vessels.
The resonance is made possible by the shell s hard inner walls which are curved on which the noise bounces off. You think of sandy beaches and dolphins leaping in the deep waters. The sound of the ocean we hear from a shell can be traced to the ambient noise coming from the surroundings. The seashell that you are holding just slightly above your ear captures this noise which resonates inside the shell.
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The most likely explanation for the wave like noise is ambient noise from around you. The shape of seashells just happens to make them. In a soundproof room there is still air but when you hold the seashell to your ear there s no sound. Of course if you are putting a shell to your ear while standing by the water you hear water just not the way you think.
The shell brings what you perceive as the sound of rushing waves into your head. In a soundproof room there is still air but when you hold the seashell to your ear there s no sound. There s no magic inside that seashell.
Source : pinterest.com