It comes and goes at random intervals, sometimes lasting hours and other times droning on for days.
Others say it sounds like a continuous distant thunder.
Among those affected by the noise, some state the hum causes nausea and headache.
Some have trouble sleeping.
And yet for some, the hum is physically manifested by rattling windows and paintings knocking off the walls.
The Windsor hum has spurred many conspiracy theories from UFOs, to covert government projects.
This area was originally a marsh land.
Zug island is currently occupied by a steel plant and a coke battery and a couple of blast furnaces.
Windsor isnt the only place to be plagued by inexplicable rumbling sound.
Before long, many other towns across Britain began reporting similar hums.
In the late 1980s, the coastal Scottish town of Largs began to experience the Hum.
Residents who allegedly heard it described the noise being the loudest while indoors and at night.
The hum was so loud that it triggered nosebleeds and chest pains in some.
Ten years later, the Indiana town of Kokomo caught the mysterious phenomenon.
In each of these cases, the source of the noise was never positively identified.
Map of Hum sufferers around the world.
The source can also be electromagnetic.
The psychological effect of low frequencies on humans is well known.
; terrestrial and geological processes such as earthquakes; and psychological.
Science writer Benjamin Radford explains the psychological part.
What does your tongue taste like?
What does your nose smell like?
What does your ear sound like?
These are not silly, simple questions but instead may hold part of the answer.
Even though we don’t notice it, our ears sometimes create their own noises.
It might explain some of the “hearers” reports.
MacPherson made aWorld Hum Map and Database, an interactive website where Hum sufferers can report hearings.
He estimates that up to 4 percent of people worldwide can hear the Hum.
