Out of idle curiosity, I was wondering about the properties of blood when used as ink.
Writing in blood sometimes pops up in the cliche of signing a deal with the devil in blood.
Apparently real-life practitioners of the occult sometimes use blood (mixed with sour salts to prevent it coagulating) to write spells.
There's the controversial Blood Quran supposedly written using ink made from Saddam Hussein's blood.
According to this site: "Using one’s own blood to write Buddhist sutras is an ascetic practice, that can be included in along with other, more drastic ascetic practices that were practiced in China over the centuries[...]"
So I was wondering, does blood actually make a passable ink? Does it fade with age? Would it damage the paper it's written on in time due to acidity? Does it pose a health hazard?
ETA: Forget the acidity question, looking it up I see that blood is slightly alkaline.
Writing in blood sometimes pops up in the cliche of signing a deal with the devil in blood.
Apparently real-life practitioners of the occult sometimes use blood (mixed with sour salts to prevent it coagulating) to write spells.
There's the controversial Blood Quran supposedly written using ink made from Saddam Hussein's blood.
According to this site: "Using one’s own blood to write Buddhist sutras is an ascetic practice, that can be included in along with other, more drastic ascetic practices that were practiced in China over the centuries[...]"
So I was wondering, does blood actually make a passable ink? Does it fade with age? Would it damage the paper it's written on in time due to acidity? Does it pose a health hazard?
ETA: Forget the acidity question, looking it up I see that blood is slightly alkaline.
via JREF Forum http://forums.randi.org/showthread.php?t=262920&goto=newpost
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