LIsa Black
Cape Coral, FL
Female, 49
I spent the five happiest years of my life in a morgue. As a forensic scientist in the Cleveland coroner’s office I analyzed gunshot residue on hands and clothing, hairs, fibers, paint, glass, DNA, blood and many other forms of trace evidence, as well as crime scenes. Now I'm a certified latent print examiner and CSI for a police department in Florida. I also write a series of forensic suspense novels, turning the day job into fiction. My books have been translated into six languages.
In general and barring other explanations, if the area around a hole caused by a bullet is gray that is caused by fouling, or vaporized lead from the bullet exiting the gun within approximately 6 inches of the hole. That would indicate that the hole is an entrance. Is the gray on the inside or the outside of the hat? I can't explain why there would not be blood on the hat (again, are we talking the inside or the outside?) unless it was literally blown off the head before the blood began to spill, but that is unlikely in the case of an exit I would think.
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I did not know gooseflesh was a characteristic of rigor, and if I'm understanding rigor to mean rigor mortis then of course they'd already be dead before reaching that stage. But as for how likely it is that pre-mortem gooseflesh would remain after death or be affected by freezing after death, I'm afraid you'd have to ask a pathologist. I don't have the expertise to answer that.
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I don't know too much about indented writing but I would suggest using alternative light sources like IR or UV.
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We use math in calculating point of orgin of bloodstain patterns. The sin of the angle of impact equals the width over the length of the blood stain. When we have a group of bloodstains on a surface like a wall or floor we can use this to calculate the point of origin. Also the fingerprint database searching uses complicated algorithms to rank fingerprint matches in terms of similarity. Forensic chemists probably use math more than I do--for example, to calculate the amount of alcohol in a person's blood. I hope that helps!
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Zookeeper and Animal Trainer
Why are some people so protective of endangered species?
iPhone & iPad Technician
What's something you think Apple does surprisingly POORLY?
Sushi Chef
Is there THAT much difference in quality between the fish served at mid-range vs high-end places?
I'm sorry but I have no idea. You'd have to ask a pathologist about wound appearance. Sorry I can't be more help.
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Officers who talk their sergeants into calling us out to a scene for five minutes of processing because they don't want to use the fingeprrint kits that they've been issued for just that purpose.
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See below.
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