Cause, effect not established: DoT report

Technically, mobile radiation is weak in terms of its effect on humans due to its inability to break down ordinary chemical bonds. Critics, however, claim that when a person makes a cellphone call, the signal sent from the mobile's antenna to the nearest base station antenna creates a radiation cycle or a 'near-field' by the cellphone even when a person is not making a call. But as the intensity of electro-magnetic wave weakens very quickly as one moves away from an antenna, the effect is peripheral. "It is reduced to 1/4 when the distance from the antenna doubles and to 1/9 when the distance is three times," according to the DoT safety report.

"Research focusing on mobile telephony over the last two decades has shown no conclusive/ convincing evidence that the radio signals from mobile phones cause adverse health effects. The cause and the effect have not yet been established," the report adds.

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