Ghost Murmur was described as a futuristic CIA tool that could detect a heartbeat from vast distances. Physicists say the public story clashes with the basic limits of magnetic sensing
The signal to noise ratio problem is analogous to trying to pick out a specific voice in a crowded stadium. It’s too loud to be able to pick up one source.
So the desert is like that, where there’s a lot of background electrical noise that’s louder than the electrical signals that a human heartbeat makes.
The signal to noise ratio problem is analogous to trying to pick out a specific voice in a crowded stadium. It’s too loud to be able to pick up one source.
So the desert is like that, where there’s a lot of background electrical noise that’s louder than the electrical signals that a human heartbeat makes.