A storm siren in Kansas At just about quarter to midnight last Friday, 156 tornado alarms in Dallas began sounding all at once. Not because of an incoming tornado, but rather because some hackers had gotten their way into the system. The unscheduled test continued for over an hour, until ...
How Far Must You Be from a Tornado Siren for a 15 dB Decrease in Sound? Here is the trouble problem... 11) A tornado warning siren on top of a tall pole radiates sound waves uniformly in all directions. At a distance of 15 m the sound intensity of the siren is 0.39 . Neglect any...
描述:Militärischer Fluglärm durch Tiefflüge in der Region Zechlin / Rheinsberg / Bombodrom am 6.7.2016, um 19.42 Uhr. Military Air Noise in the Zechlin / Rheinsberg Lakes region, recorded on July 6th, at 19.42 CEST. This is aerial noise, generated by a group of low level Tornado fi...