Studying Temperature-Dependent Sound Speed in a Constantly Filling Beaker Using a Smartphone.

This article presents a study on the temperature-dependent sound speed in a beaker using a smartphone. The researchers conducted experiments with a tall beaker and a smartphone to measure the frequency and harmonics of the sound produced as the beaker was filled with water. They also investigated how the speed of sound changed as the air inside the beaker became warmer. The results showed that the frequency of the sound increased over time and that the speed of sound aligned with theoretical values at room temperature. The researchers also conducted experiments with hot air to observe any differences in the frequency response. Overall, this experiment provides a simple and replicable way to determine the speed of sound in air, making it a valuable teaching tool for acoustics. [Extracted from the article]