You will be surprised to see what physics explains the sound of applause

• Surprisingly, but between the vibrations in the applause and glass bottles there is a serious similarity
• Hands of applause become halmholtz resonators
• During the tests, the researchers used a baby spin
• The pitch of applause depends on the volume of the air pocket formed with our hands and the size of the opening
• Applause is as individual as fingerprint, that is, on this basis it can be identified by people

The previous, dust -powered note was not formulaic, it should be understood literally. An international research team used a baby patch for new experiments to study the air currents caused by applause that are obviously closely linked to the issued sound. Studies have confirmed that applause hands become halmholtz resonators. Pressure measurements and high -speed video footage from applause supported this assumption. Researchers have been published in the Physical Review Research journal in a study shared – Write the Science News Explores.

Everyone’s grip has a Helmholtz resonator

THE Helmholtz resonator To create, you only need a closed air pocket that is connected to a « neck » connected to a opening. The inside of a glass bottle works. Just like the space between the applause hands. As the air vibrates back and forth in the neck, it creates sound waves. The pitch of these waves depends on the volume of the air pocket and the size of the neck and opening.

When someone applauds with their hands, an air jet flows out on a gap at the meeting of the hands. This is between the thumb and index finger. « This air jet carries energy, which is the beginning of the sound. » The radius triggers the air vibrations. Fu a Cornell University mechanical engineer. Its group experienced a similar effect when the palm of the palm was imitated with cup -shaped silicone models.

This showed a variety of applause

The team examined different types of applause. In some tests, the cups imitating the hands were clashed. Others applauded with flat palms. Again, their fingers tapped their palms. The pitch of these applause was the same as what we would expect in the case of a Helmholtz resonator.

For example they give out sounds. And the hand, like the cup, produced deeper tones than a flat hand. It makes sense because the cups have created a larger air pocket than flat hands.

According to Fu, understanding the physics of hand -tapping can help people identify people based on their applause. One day, users may apply to a device based on their unique applause. Discoveries can help musicians fine -tune songs with perfect rhythmic applause – believes the SN Explores.