It is indeed true that you can hear conversations from the shore while submerged in a pool. The scientific reason behind this is that sound transmission relies on the vibration of particles within a medium. Whether the medium is solid, liquid, or gas, sound can pass through it. Water, being a denser medium than air, actually facilitates the movement of sound waves efficiently. Thus, the acoustic energy generated by speakers on land penetrates the water interface and reaches your ears underwater.
游泳池中水下能听到岸上说话声吗？科学原理解析
When you are diving in a pool, sounds from the shore are definitely detectable. This happens because sound energy is not confined to the air; it transfers across different states of matter. The air carries the voice to the water's surface, and the water then carries the vibration to your ears. This principle explains why, for instance, fishermen avoid making noise on the bank, knowing that the water will transmit these sounds to the fish below.
The phenomenon of hearing voices underwater while swimming relates to the fundamental principles of sound propagation. Sound requires a medium to travel, and unlike in a vacuum where it cannot propagate, both water and air act as effective mediums. When people speak on the shore, their voice creates vibrations in the air. These vibrations hit the water surface and continue to travel through the water to reach you, making their speech audible even when you are submerged.
underwater diving allows you to hear people talking on the shore. This is possible because sound waves can travel through various mediums, including solids, liquids, and gases. Since water is a liquid medium, it effectively transmits sound waves from the air above the water surface down to your ears under the water, allowing you to perceive the voices of people on the shore.