Seismometers are interested in the vibrations of the Earth, for different reasons. Some may be interested in the geological process. Some in the response of buildings and other structures.
Seismometers can respond to very low frequencies, down towards 1 milli-Hertz. And up to a few hundred Hertz.
These machines do not 'use' frequencies, they merely record what is naturally happening.
A seismograph is one such instrument...there might be others.
the basic difference between histogram and frequency polygon is that histogram uses bars to show its frequency and frequeny polygon uses points and join its staight line
bandwidth? Operating frequency? Sound frequency?
Samuel D Stearns has written: 'Applications of the coherence function in comparing seismometers' -- subject(s): Seismometers
Seismometers. For information on how seismometers are used, please see the related question.
normal curve
Because they are detected by seismometers.
3
seismometers
No, it uses radio frequency signalling.
You need a seismometer for each axis of motion. As such it takes three seismometers.
No The HDS 5 uses a dual frequency transducer (blue end), and the X70 uses a single frequency transducer (grey end).