The bells used in prayer have a significance that the sound of tinkling bells diverts the mind from its thoughts and makes it focus on the bells instead, thereby preventing worldly thoughts for that moment. Even the bells hung at temple door are used to spread social message of devoting their lives to God and standing at his door to be blessed by him. Bells are used at various stages of offerings like entering temple, rotating oil lamp in front of deity, bathing ceremony and during offering bhog. A well designed bell resonates sound of "AUM" and sends a positive frequency in air. At Rudra centre bells have various designs and each one has a specific meaning like Ganesh hanging bell are used to hang at door, akhand bell is used for continuous ringing during prayer ceremony. Clamp bells are used during bhajans or jagrata. Tibetan Om bell comes with stick which should be hit on body of bell and it resonates Aum for longer duration compared to other bells.