Solar power is energy that is derived from the sun and converted into heat or electricity. It is a versatile source of renewable energy that can be used in an amazing number of applications, providing power for everything from cars and boats to houses and spacecraft.
A measurement of the acceleration spectral density (ASD) is the usual way to specify random vibration. The root mean square acceleration (Grms) is the square root of the area under the ASD curve in the frequency domain.
Seismographs measure vibrations produced during earthquakes. All earthquakes, regardless of size, generate vibrations deep within the earth. These vibrations are caused by the breaking and fracturing of rock and organic materials along fault zones; seismographs detect and record the frequency, duration and magnitude of all vibration waves emitted from earthquakes.