Monday, September 12, 2016

MENTION DETAILS OF DECIBEL Reader's Mail Tiruchi The Hindu 13.9. 2016

The Hindu
Tiruchi TAMIL NADU September 13, 2016

Reader's Mail

MENTION DETAILS
OF DECIBEL

Sound pressure is measured in decibels. If sound pressure exceeds 85dB it can cause hearing defects. Sound levels above 140 dB (for children 120 dB) are not considered safe for any period of time, however brief.
Firecrackers are producing sound more than 140dB. They can damage our hearing.
Manufacture, sale and use of firecrackers generating sound levels exceeding 125 dB at four meters distance are banned. It is better to mention the sound level produced on bursting in decibels on all  firecrackers packs.

M.A. Aleem,
Tiruchi.

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