1. Who developed PCR?
2. The width of a spatter is 18 millimeters and its length is 36 millimeters. Calculate the angle of impact.
3. Which of the powders is used for lethal injections?
Forensics C
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jimmy-bond
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Re: Forensics C
PCHS, HI '21 | CWRU, OH '25
Code(16), DD(40), FQ(39),4&6(36), WQ(27)
CriB(26), DP (11), FF(1), MM(14), P&P(6)
CriB(36), DD(35), FF(2), MM(20)
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SilverBreeze
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Re: Forensics C
Here's my best answer:
1. Kary Mullis
2. 30 degrees, (arcsin(18/36))
3. KCl
1. Kary Mullis
2. 30 degrees, (arcsin(18/36))
3. KCl
Troy SciOly 2019 - 2023
Captain 2021-2023
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Captain 2021-2023
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jimmy-bond
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Re: Forensics C
All are correct. Your turn!
PCHS, HI '21 | CWRU, OH '25
Code(16), DD(40), FQ(39),4&6(36), WQ(27)
CriB(26), DP (11), FF(1), MM(14), P&P(6)
CriB(36), DD(35), FF(2), MM(20)
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SilverBreeze
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Re: Forensics C
1. When glass is placed in a clear liquid, a "halo" or bright line appears, allowing you to see it. a) What is this "halo" called, and b) under what conditions does it disappear?
2. As opposed to grooves, _______ are the raised parts on the inside of the bore of a rifle.
3. a) Define "anthropometry." b) Who invented it, and c) what system was it eventually replaced by? d) Why was it replaced(i.e., why was the new system better than it)?
2. As opposed to grooves, _______ are the raised parts on the inside of the bore of a rifle.
3. a) Define "anthropometry." b) Who invented it, and c) what system was it eventually replaced by? d) Why was it replaced(i.e., why was the new system better than it)?
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amrita
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Re: Forensics C
1. Becke line, disappears if the glass and liquid have the same refractive index
2. lands
3. a) the study of the measurements of the human body
b) Alphonse Bertillon
c) fingerprint records
d) it was easier and also accurate
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SilverBreeze
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Re: Forensics C
All correct. Your turn!
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Captain 2021-2023
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amrita
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Re: Forensics C
1. Which substance is orange in a flame test and forms a gel when combined with NaOH?
2. If maggots were found on a corpse, how long ago did the organism die?
3. It is suspected that there are some latent fingerprints left on a sheet of paper, which development method would best make them visible?
2. If maggots were found on a corpse, how long ago did the organism die?
3. It is suspected that there are some latent fingerprints left on a sheet of paper, which development method would best make them visible?
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SilverBreeze
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Re: Forensics C
If someone else would like to answer or post a new question, they can, but here are my answers:
1. calcium nitrate
2. 1-5 days ago?
3. ninhydrin
2. 1-5 days ago?
3. ninhydrin
Troy SciOly 2019 - 2023
Captain 2021-2023
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Captain 2021-2023
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SilverBreeze
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Re: Forensics C
Since nothing's happening, might as well...
1. Which powders precipitate with NaOH?
2. A piece of glass disappears in a solution with refractive index 1.53. What is the glass' refractive index?
3. What is a base peak in mass spectrometry?
1. Which powders precipitate with NaOH?
2. A piece of glass disappears in a solution with refractive index 1.53. What is the glass' refractive index?
3. What is a base peak in mass spectrometry?
Troy SciOly 2019 - 2023
Captain 2021-2023
Former Events: Ecology, Water Quality, Green Gen, Ornithology, Forestry, Disease Detectives, Forensics, Chem Lab, Env Chem, Sounds, Dynamic Planet, Crime Busters, Potions & Poisons, Exp Design, Towers, Mystery Arch, Reach for the Stars, Mission Possible
Captain 2021-2023
Former Events: Ecology, Water Quality, Green Gen, Ornithology, Forestry, Disease Detectives, Forensics, Chem Lab, Env Chem, Sounds, Dynamic Planet, Crime Busters, Potions & Poisons, Exp Design, Towers, Mystery Arch, Reach for the Stars, Mission Possible
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Nerdforlife
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Re: Forensics C
Ok, this might be really dumb but i am not able to open the "click to show hidden text" tab. Clicking on it doesnt work. How do you open it? And also where can I find practice tests for forensics?