Bells have been around since neolithic China around the 3rd millennium BCE.
We have seen bells ringing in the New Year. A bell was tolled once announcing the death of someone. Church Bells toll for weddings or services. Feng Shui uses bells. We have seen bells used for different reasons though out history but why?
A bell's vibration continues to resonate long after we stop hearing, think tunning fork.
The sound of the bell is often considered auspicious, which welcomes divinity and dispels evil. The sound of the bell is said to disengage the mind from ongoing thoughts, allowing you to focus Ringing bell during prayer is said to help in controlling the ever-wandering mind and focusing