why is the surface of a bell made large?

The surface of a bell is made large to enhance the production of sound. Here's why:

When a bell is struck, it vibrates and produces sound waves. The sound waves are created by the vibrations of the bell's surface. A larger surface area allows for a greater amount of air to be displaced, resulting in a louder and more resonant sound.

To understand why a larger surface area produces a louder sound, we need to consider the physics behind sound production. Sound is created by the back-and-forth vibrations of an object, which create compressions and rarefactions in the surrounding air. These regions of high and low pressure travel through the air as sound waves.

When a bell is struck, the energy from the impact is transferred to the bell's surface, causing it to vibrate. The vibrations displace the surrounding air, creating sound waves. The larger the surface area of the bell, the more air is displaced, resulting in a greater compression and rarefaction of the air molecules.

A larger surface area also allows for more vibrations to occur simultaneously across the bell's surface. This leads to a more complex and rich sound with multiple frequencies and harmonics. In contrast, a smaller surface area would produce a weaker and less resonant sound.

So, by making the surface of a bell large, we effectively increase the amount of air that can be displaced and the number of vibrations that can occur, resulting in a louder and more vibrant sound.