- Scientists believe they have found the
secret behind stories of people suddenly bursting into flames.
-
- BBC 1's QED - which brought together
the world's top fire experts - looked at cases of spontaneous human combustion
from around the world.
-
-
- And the programme discovered that the
so-called wick-effect, in which a body is devoured by flames from its own
body fat, is behind the mystery.
-
- Using a dead pig wrapped in cloth, they
simulated a human body being burned over a long period and the charred
effect was the same as in so-called spontaneous human combustion.
-
- The QED team spoke to Paul Haggarty who
as a young fire officer was called to investigate a fatal fire in Pennsylvania.
The victim was an elderly widow and what he saw still haunts him.
-
-
- The victim was consumed by fire except
for the legs. Even a wooden table nearby was untouched.
-
- Mr Haggarty said: "There is no way
you could explain it. None of the firemen had seen anything like it."
-
- The most recent recorded case in the
UK happened in 1992 in northern England.
-
- Again, the woman's legs were left untouched,
while the rest of her body was burned to a cinder.
-
- Home Office pathologist Mike Green, who
examined the body, does not believe in spontaneous human combustion.
-
- But he said: "The first time you
see it you rock back on your heels and your ask yourself 'How is it that
the body has been totally consumed and nothing else has been damaged?'
-
- "It beggars belief."
-
-
- Explanations include balls of lightning
or a build up of methane inside the gut.
-
- But forensic scientists are now convinced
that the cause of such incidents is the so-called wick effect, started
by a source as simple as a cigarette.
-
- This means that in certain rare circumstances
a human being can burn like a candle.
-
- But the fact that human bones were completely
destroyed remained a mystery, until now.
-
- Even in human crematoria where temperatures
are 700-1000 centigrade, the bones are not destroyed.
-
- Dr John de Haan of the California Criminalistic
Institute used a dead pig in a gruesome experiment to show that small flames
can consume a human being with the help of burning body fat.
-
-
- A pig was used because it closely resembles
a human's fat content.
-
- The pig was wrapped in a blanket and
a small amount of petrol was poured on it.
-
- After five hours of continuous burning
the bones were being destroyed.
-
- Dr De Haan said: "The sort of damage
here is exactly the same as that from supposed spontaneous human combustion."
-
-
- The scientists believe they demonstrated
how a case of spontaneous human combustion can occur through normal processes
on a person who has been knocked unconscious.
-
- The wick effect means that a person could
burn slowly without attracting attention from passers-by.
-
- It also explains why only part of the
body, the part which is rich in fat, burns while rest stays intact.
|
