so they, like other types of electromagnetic wave, can travel basically anywhere, through a vacuum, or through atmosphere or water.
Now, radio waves can be detected. For example, very low frequency radio waves can be detected with a special type of radio receiver
called a very low frequency radio or VLF radio, which can pick radio waves with very low frequencies, from 3 to 30 kilohertz,
which aren’t really picked up by a regular household or car radio.
So VLF radios pick VLF radio waves and convert them to sounds we can hear.
Um, on Earth, the main source of naturally occurring VLF emission is lightning, which generates a pulse of radio waves every time it flashes. Yes, Laura.
Since you almost always get lightning with thunderstorms. We can pick up VLF waves pretty often, right?
You just have to wait until there is a thunderstorm.
Ah, do you? Have to wait? VLF receivers are very sensitive and VLF waves travel very far.
So you can pick up emission from lightning that’s far away.