Some of the people doesn't believe in mantra ,tatra and the so called our old Indian mythology &cultures. these people believes only on physical word and give the reasons of science behind everything but after certain calculations, come to this mythology that all the Veda and tantra mantra are true not only the religious believe but the science also prove it. Something which can not see by our eyes are true but it is invisible. some of the examples are mobiles ,it is based on receipt of certain frequency band which can make it conversable .which is not visible by our eyes but exist in atmosphere ,just not only mobiles but radio, television and walky talkies are based on the same phenomena all these applications based on the frequecies.,so if we believe or see its all the true then why we challenge to mantra where we can generate certain frequencies by our own pronunciation’s we see all the frequcies have some energy and some frequency band so the radio signals are not collapse with the television signals or same with the others. as we know all the frequcies have some energy associates with them. when we chant the mantra we can generate energy which is not visible . this energy is in the form of aura and science also already proves every person have an aura surrounding his face and aura itself define his own energy or hidden energy. when we chat more or more a mantra our aura can be more and more powerful so it is the evidence that our old mythologies and all depends upon the purely science but some persons which can not understand this phenomena which can say its all the waste of time.