Expert explains the 852 Hz frequency and it’s role in helping one relax, sleep better
Dr Deepti Sinha, lead consultant, Dept of ENT at the CK Birla Hospital, Delhi, said the 852 Hz frequency, part of the ...
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Some species of baleen whales avoid attracting killer whales by singing too low to be heard
New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...