Shank comes from the two sanskrit words shum which means something good and kham meaning water. Hence the meaning of shankam is conch holding the sacred water. It is also said word shankara was been derived from sankha-kara which means conch-blower shankha means conch and kara means blower . 1.When the conch is blown with controlled breath, the primordial sound of om emanates from it. This eternal sound is the origin of all vedas. All knowledge enshrined in the vedas is an elaboration of the omnipresent sublime sound of om. It was this sound that was chanted by the lord before manifesting the cosmos. It represents the creation and the truth behind it. 2.The blowing of a conch shell enhances the positive psychological vibrations such as courage, determination, hope, optimism, willpower and bliss can be felt by all people assembled and also by the blower. 3. As soon as the shank is blown the frequencies of divine energy shakti are emitted into atmosphere due to sound generated. These energy frequencies are seen in red colour. Along with these energy frequencies yellow circles of chaitanya are also projected in the atmosphere. You can also see the pink particles of bliss being emitted in the atmosphere. This increases the proportion of shakti energy , chaitan- ya and anand in the environment and that is why the negative energies get distressed and run away. Another speciality of shank is that the vibrations emanating on blowing it destroys the disease causing germs in the atmosphere. Renowned scientist j.C. Bose has proved that the harmful invisible virus insects are disappear by the sound produced by conch shell. 4. A person holds a conch shell to his ear, the sound of the ocean humming gently can be heard. It is actually the natural vibration or cosmic energy of the earth that gets magnified on entering the conch shell. The moment shank is blown our brain is emptied of all thoughts. 5.Stammering children can be corrected of their speech by regularly.