submitted by Belmont to pics 11 monthsJun 15, 2023 07:37:14 ago (+19/-0) (files.catbox.moe)
CoinQuest 9 points 11 months ago
It is an antenna. It neede to be large to be efficient with very low frequency waves (0-30kHz). These waves can penetrate water and are used to communicate with submarines.What would you like to know?
CoinQuest 9 points 11 months ago
It is an antenna. It neede to be large to be efficient with very low frequency waves (0-30kHz). These waves can penetrate water and are used to communicate with submarines.
What would you like to know?