Dr Deepti Sinha, lead consultant, Dept of ENT at the CK Birla Hospital, Delhi, said the 852 Hz frequency, part of the ...

Deep in the Pacific, humans have tracked a mysterious whale’s call for decades—but no other whale seems to respond. And now, we might be running out of time to find the source.

For water waves and sound waves the unit hertz is usually good enough but radio and TV waves have such a high frequency that the kilohertz (\(kHz\)) or even the megahertz (\(MHz\)) are better units.

As part of balancing supply and demand, ERCOT is responsible for keeping the grid humming along at frequency of 60 hertz. Frequency dropping below that threshold for too long could cause ...