polygraph wave line on graph paper. black earthquake pattern on white background. seismograph icon. detector lie. richter

polygraph wave line graph paper black earthquake pattern isolated white background seismograph icon detector lie richter scale seismometer vibration record oscillation vector seismogram sound seismic seismology mechanical artificial motion test png audio indicator machine data radio meter soundwave nature sensor seisogram music diagram chart waveform activity warning frequency measurement volcanic tremor grid quake interval exam security wrong concrete needle sismic white design