Sound can kill you consider this piece of history: on the morning of aug 27, 1883, ranchers on a sheep camp outside alice springs, australia, heard a sound like two shots from a rifle. People don't usually think of infrasound as sound at all you can hear very low-frequency sounds at levels above 88-100 db down to a few cycles per second, but you can't get any tonal information out of it below about 20hz-it mostly just feels like beating pressure waves. Infrasound can mess with your head this entry was posted on february 19, 2013, in geophysics & behavior , infrasound - fear & hallucinations and tagged apparitions , earthquakes , elfs , ghost , hallucinations , hauntings , infrasound , panic , standing wave , tsunami. Infrasonic sound can have very unusual non-auditory effects on the body but does it kill.
The reason sound waves can kill is that they carry energy the sound waves caused by a powerful thunderclap, though miles distant, can not only startle a person, but can rattle dishes in cabinets and knock knick-knacks off shelves. Biology which animals are capable of hearing infrasound answer by tasnim essack march 13, 2014 as humans, we can hear the rumble of distant thunder but can't hear the crack of lightning unless it strikes close by. Infrasound can be used as many things like a weapon, an early warning of natural disasters, or it can be used to locate things elephants, whales, giraffes, rhinoceros, alligators, and okapis also use infrasonic waves to communicate.
Ghosts and infrasound | stuff they don't want you to know - duration: 4:35 stuff they don't want you to know - howstuffworks 186,587 views. Infrasound can penetrate any objects unlike middle and high frequency sounds we should be well aware of it, because many countries are trying to apply it as war weapon home appliances such as hair drier, oven toaster, television, personal computers, and surprisingly, even commuter train you are riding every day may produce infrasound. However, if the explosion is large enough (think nuclear bomb), the infrasonic sound wave left over from the dissipated shock can still kill by picking you off your feet and throwing you through the air at a few hundred miles per hour.
You'd have to do some searching but i believe an infrasound meter can be made fairly cheaply using a speaker wired up in reverse (external sound pushes the cone in, which creates measurable electrical change. The psychoacoustic effect of infrasonic, sonic and ultrasonic frequencies within non-lethal military warfare techniques exploring the use of audio to influence humans physically and psychologically as a means of non-lethal warfare methods throughout both the 20th and the 21st century. Humans can't hear infrasound, but we have created devices to detect these low frequency waves by observing them, we can learn more about the natural world and even monitor nuclear testing.
You can hear very low-frequency sounds at levels above 88-100 db down to a few cycles per second, but you can't get any tonal information out of it below about 20hz—it mostly just feels like beating pressure waves. Supposedly, acoustic weapons will use infrasonic sound or some such to incapacitate rather than kill an enemy, turning him into a bleeding, puking mess or maybe they'll kill him, using baseball-sized acoustic bullets. Can sound kill you the short answer is yes — and, rather shockingly, the european space agency says that it now has such a sonic weapon in its arsenal that, if it was so inclined, could kill you for the long answer, read on.
To generate infrasonic waves that travel for some distances and can be detected some meters away you can not have a small device the minimum radius of the transmitting disc is given by lambda / 4 lambda is the wavelength in air. Infrasound can result from both natural and man-made sources: natural events: infrasonic sound sometimes results naturally from severe weather, surf, lee waves, avalanches, earthquakes, volcanoes, bolides, waterfalls, calving of icebergs, aurorae, meteors, lightning and upper-atmospheric lightning. Infrasonics, vibrational or stress waves in elastic media, having a frequency below those of sound waves that can be detected by the human ear—ie, below 20 hertzthe range of frequencies extends down to geologic vibrations that complete one cycle in 100 seconds or longer. But, before you get too excited (or maybe scared) about the prospect of a sound weapon, it might actually be really hard to use sound to kill anybody different parts of your body resonate at.
Typically, if you speed up a recording containing infrasonic elephant calls 3 times, you will easily be able to hear them sounds can also be represented visually using spectrograms spectrograms graph frequency on the y-axis, time on the x-axis and represent loudness of sound by the darkness of the display. At greater intensities, infrasound can make a person feel ill and disoriented at even greater energies, infrasound can kill by causing the internal organs of a person to vibrate so violently that they rupture. So ultrasonic sound waves tend to have small amplitudes and as alfred dominic vella points out, the elasticity of our tissues can usually cope with this however, if someone deliberately built a device to generate ultrasound of very high intensity, it could instantly boil whatever part of your body it's hitting.