World News

This four-inch antenna could let you text from deep underground – Engadget

April 12, 2019

This four-inch antenna could let you text from deep underground  Engadget

There’s a reason that scuba divers use sign language and that caves and tunnels create radio dead zones. The laws of physics prevent radio signals from …

Source: Google News | This four-inch antenna could let you text from deep underground – Engadget

No Comments

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.