Niin sanottu spontaani itsestäänsyttyminen

Tippitapitus kirjoitti:

Nimimerkki ☻heitti niin kovaa tekstiä, että tälle oli pakko avata oma ketjunsa:

''Itsesyttymisestä ei ole olemassa yhtäkään tieteellistä tutkimusta eikä myöskään yhtäkään tieteellisesti pätevää selitystä.''

Et sitten viitsinyt kokeilla mitä esim. Scholar palauttaa haulle ''Spontaneous Human Combustion''?

''So-called Spontaneous Human Combustion is not spontaneous, but needs a source of heat near the body. Typically, it affects elderly overweight alcoholic Caucasian (Western Europe and North America) women. Only parts of the body are reduced to ashes, including bones, whereas other parts are stunningly well or totally preserved. The immediate vicinity of the victim is nearly intact. The cause of death is nearly always natural, and burning of the body usually occurs after death. Frequently (but not always), there is a high blood alcohol concentration.''

Levi-Faict, T. W. and Quatrehomme, G. (2011), So-called Spontaneous Human Combustion. Journal of Forensic Sciences, 56: 1334–1339. doi: 10.1111/j.1556-4029.2011.01746.x

''It is now accepted that under certain circumstances, a body can burn by combustion of its own fat with little or no damage to the close surroundings, and that such combustion is never ‘spontaneous’, but is instead ignited by an external source of flame. In some cases the body is found in the hearth of a chimney; in such instances, oxygenation is good and the draught of the conduit prevents the formation of smoke and particular circumstances cause combustion, not some unspecified extraordinary inflammability. In order to test this theory, Gee designed an experimental model of spontaneous human combustion in 1965. Around a test tube that ensured the integrity of the system, he wrapped a layer of human fat, then a layer of skin, and finally several thicknesses of light clothing. Lighted at one end with the flame of a Bunsen burner, this model continued to be slowly consumed producing a great amount of soot. This made it possible to demonstrate the exothermic character of such combustion. A temperature of 250°C is necessary to ignite body fat; however, ‘a cloth wick in liquid fat will burn, like a lamp, even when the temperature of the fat has fallen as low as 24°C. Although the source of the heat does not subsist, it continues ‘burning’, producing a temperature of 24°C, a slow and passive phenomenon that has been described as a ‘candle effect’. The external source which started the fire may disappear during the combustion process, which explains the absence of heat source when the corpse is discovered.''

Gromb et al., (2000), Spontaneous human combustion: a sometimes incomprehensible phenomenon. Journal of Clinical Forensic Medicine, 7: 29-31. doi:10.1054/jcfm.2000.0353

Mikä on kun aikuiset ihmiset turvautuvat taikatemppuihin selitykseksi?

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