Zaļā vārna ir un paliek zaļā vārna

wilkacis commented on spike's post:

Par tiem decibeliem:

110 Decibels
Regular exposure of more than 1 minute risks permanent hearing loss.

100 Decibels
No more than 15 minutes of unprotected exposure recommended.

85 Decibels
Prolonged exposure to any noise at or above 85 decibels can cause gradual hearing loss.

Seen @ U.S. National Institute of Deafness and other communication disorders