Vibration magnetometer in science definition and examples

I'm Professor Smith, and today we'll be exploring the intriguing realm of Very Low Frequency, commonly known as VLF. As the name suggests, VLF refers to the range of frequencies that are significantly lower than what our ears can perceive. In the scientific context, VLF typically spans from 3 kilohertz (kHz) to 30 kHz, making it an essential part of various fields, including geophysics, communication, and even space research.