>Peter writes,
>
>> SONIC WOMB
>>
>> An ultrsound scan relies on sound frequencies too high to be heard,
>> but a new study finds that it can raise a racket in the womb by
>> vibrating internal organs - in particular, the fetal ear.
>
>Thanks for that Peter, v.interesting.
>
>Am I right in thinking this is the same phenomenon that has been attributed
>to the beaching and drownings of dolphins and the like - ultrasonic
>emissions (mainly from military) which resonate certain body cavities and
>organs, like the brain. I think I read this on the bio-acoustic list, or was
>it here?
NF: The big issue has been (almost)sub-sonic frequencies I believe - VERY LOUD (145dB?) low frequency pulses (20Hz?) that travel for thousands of kms. through the oceans.
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