A small percentage of people may hear a strange sound Bashny.Net

The nature of sound «Hum» still do not obyasnena



This steady hum, which is sometimes referred to as the «Hum», at different times heard in England, Scotland, Canada, the US and some other parts of the globe.

It is interesting that only a small percentage of residents of these places have heard the sound, and the others who were at the same time with them, did not notice anything. The first cases were reported as early as 1950 - puzzled inhabitants reported that never in my life heard anything like this low-frequency pulsating hum.

Scientists are struggling with the origin of this sound for years, and although it is not possible to determine its source, researchers have identified some patterns. Almost always, people heard the noise is in the room, and much more at night than during the day. Most of the evidence came from rural or suburban areas, and urban dwellers rarely hear the sound (believed to be because everything drowns out the noise of the city).

At the moment, that's all we can say for certain about the nature of this mysterious phenomenon. Scientists have put forward a variety of hypotheses about the origin of the noise from a particular combination of frequencies of the waves of the ocean and the wind, giving birth to a resonant sound to any major industrial facilities, which can also be the source of this noise, but none of these assumptions is not yet proven.

via factroom.ru