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.
Yes, the arcsin of the width divided by the length of the stain will give you the angle of impact at which the blood struck the surface (usually a wall). The direction of the stains can be traced back to a point of convergence and from there the angles can be traced back to a distance from the wall, giving you the approximate point in space where the blow was struck.
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Barring any bizarre circumstances i would think they have only been dead for a short time. But that's really a pathologist's question.Hope that helps!
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It almost certainly would not be a deal-breaker. Just tell them the truth.
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At it’s most basic, a trajectory is just geometry. If you can find two fixed points then you can draw a straight line between and beyond them.
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At a guess, I would suggest: slash marks that are too wide for a knife, some partially healed, would indicate animal claws inflicted at different times, but none deep enough or near vital arteries to cause bleeding out. Then water in the lungs would indicate drowning, though that is not always a definite indicator. Drowning is an elimination diagnosis, as in you eliminate other possible causes.
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That depends on what you want to go into. If you want toxicology, go with chemistry. If you want serology or DNA, go with biology. If crime scene, general forensic science.
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No, just attention to detail and patience.
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