 |
| |||
| subsonic noise; low-frequency noises | |||
| infrasonics | |||
| infrasonic sounds | |||
| infrasonic vibration; infrasound Vibrations of the air at frequencies too low to be perceived as sound by the human ear, below about 15 hertz | |||
| infrasonic noise | |||
| infrasonic; infrasound | |||
| |||
| infrasonic | |||
| |||
| infrasonic | |||
|
Infraschall : 3 do fraz, 2 tematyki |
| Fizyka | 1 |
| Technika i technologia | 2 |