4 ms·

Somehow this reminded me of the old `sound()` help file from Borland C++ 3.1. I think it was in dos.h. http://everything2.com/title/7+hertz+-+the+resonant+freq

Somehow this reminded me of the old `sound()` help file from Borland C++ 3.1. I think it was in dos.h. http://everything2.com/title/7+hertz+-+the+resonant+frequency+of+a+chicken%2527s+skull http://everything2.com/title/7+hertz+-+the+resonant+frequenc... /* Emits a 7-Hz tone for 10 seconds. True story: 7 Hz is the resonant frequency of a chicken's skull cavity. This was determined empirically in Australia, where a new factory generating 7-Hz tones was located too close to a chicken ranch: When the factory started up, all the chickens died. Your PC may not be able to emit a 7-Hz tone. */

nness 11y ago
Great little anecdote, although I guess you'd call it a hoax? The volume would have to be so loud that any human in the area would be in a great deal of discomfort before it killed nearby chickens.
- sandworm101 11y ago
  Birds are weird, basically totally nuts when kept in groups indoors. A little stress could see them all stop eating or peck everyone to death. A less-than-lethal volume could do real damage. A strobelight cannot kill a horse. But set one up in a barn full of horses and they will probably kill themselves. Horses are also nuts.
  - shwouchk 11y ago
    Have you tried setting up a strobe in a locked room full of people?
    - dnzm 11y ago
      That's called a rave. Usually the people involved pay for the privilege of being locked up, as well.
      - chrischen 11y ago
        Some people die in that too. People are nuts.
      - StavrosK 11y ago
        Usually the people are also free to leave whenever, which is not so much the case for the animals.
        ehvatum 11y ago
        Why wouldn't the people be free to leave the animals?
    - cnvogel 11y ago
      Yes, this experiment has been performed many times. It's called a “rave” and people will die from the exhaustion of dancing without eating or drinking anything for days...
      - drdeca 11y ago
        Wait, really?
pantalaimon 11y ago
Why would there be a factory for 7Hz tones?
- chillydawg 11y ago
  To sell to Borland!
- userbinator 11y ago
  Large equipment like fans could generate such frequencies. As they've been linked to ghost sightings in humans, I wouldn't be surprised if chickens got spooked by a similar effect: https://en.wikipedia.org/wiki/Infrasound#Suggested_relationship_to_ghost_sightings https://en.wikipedia.org/wiki/Infrasound#Suggested_relations...
VLM 11y ago
Must be a big chicken, per http://www.wavelengthcalculator.com/ http://www.wavelengthcalculator.com/ the wavelength in water (brain matter) of a 7 Hz tone is somewhat over 200 meters. So probably not the skull cavity unless its some kind of chicken themed Godzilla movie. The problem is likely not the skull but the neck and tendons and stuff oscillating like a bridge.
- YeGoblynQueenne 11y ago
  I guess you could argue that Godzilla is basically a big chicken, or at least a cousin thereof. [1] http://godzilla.wikia.com/wiki/Godzillasaurus http://godzilla.wikia.com/wiki/Godzillasaurus [2] https://en.wikipedia.org/wiki/Theropoda https://en.wikipedia.org/wiki/Theropoda

nness 11y ago

Great little anecdote, although I guess you'd call it a hoax? The volume would have to be so loud that any human in the area would be in a great deal of discomfort before it killed nearby chickens.

sandworm101 11y ago
Birds are weird, basically totally nuts when kept in groups indoors. A little stress could see them all stop eating or peck everyone to death. A less-than-lethal volume could do real damage. A strobelight cannot kill a horse. But set one up in a barn full of horses and they will probably kill themselves. Horses are also nuts.
- shwouchk 11y ago
  Have you tried setting up a strobe in a locked room full of people?
  - dnzm 11y ago
    That's called a rave. Usually the people involved pay for the privilege of being locked up, as well.
    - chrischen 11y ago
      Some people die in that too. People are nuts.
    - StavrosK 11y ago
      Usually the people are also free to leave whenever, which is not so much the case for the animals.
      - ehvatum 11y ago
        Why wouldn't the people be free to leave the animals?
  - cnvogel 11y ago
    Yes, this experiment has been performed many times. It's called a “rave” and people will die from the exhaustion of dancing without eating or drinking anything for days...
    - drdeca 11y ago
      Wait, really?

pantalaimon 11y ago

Why would there be a factory for 7Hz tones?

chillydawg 11y ago
To sell to Borland!
userbinator 11y ago
Large equipment like fans could generate such frequencies. As they've been linked to ghost sightings in humans, I wouldn't be surprised if chickens got spooked by a similar effect: https://en.wikipedia.org/wiki/Infrasound#Suggested_relationship_to_ghost_sightings https://en.wikipedia.org/wiki/Infrasound#Suggested_relations...

VLM 11y ago

Must be a big chicken, per http://www.wavelengthcalculator.com/ http://www.wavelengthcalculator.com/ the wavelength in water (brain matter) of a 7 Hz tone is somewhat over 200 meters. So probably not the skull cavity unless its some kind of chicken themed Godzilla movie. The problem is likely not the skull but the neck and tendons and stuff oscillating like a bridge.

YeGoblynQueenne 11y ago
I guess you could argue that Godzilla is basically a big chicken, or at least a cousin thereof. [1] http://godzilla.wikia.com/wiki/Godzillasaurus http://godzilla.wikia.com/wiki/Godzillasaurus [2] https://en.wikipedia.org/wiki/Theropoda https://en.wikipedia.org/wiki/Theropoda