Fingerprint Detection: Unveiling Simple Techniques Used by Detectives (Even After Wiping)!
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- Опубликовано: 1 июн 2024
- There’s a common movie trope of an actor wiping their fingerprints off a gun. It seems like a simple wipe with a cloth eliminates any trace of a criminal’s guilt, but that isn’t actually the case!
Scientists have developed a method that can visualize prints from even the faintest fingerprint deposits left after the metal of a gun is wiped off. This technique uses a colored-electro active film that uses fingerprint residues as a stencil for blocking the electric current. Once a voltage is passed through, the oily regions deflect the colored substances surrounding bare regions, which gives rise to a negative ridge pattern.
#fingerprint #forensics #criminalcase
References:
www.amazon.com/Introduction-F...
www.compoundchem.com/2016/07/...
www.amazon.com/Forensics-Anat...
www.amazon.com/Crime-Scene-Co...
pubs.rsc.org/en/content/artic...
onlinelibrary.wiley.com/doi/a...
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Somehow I feel I need to know this for my own good. But I don't.
I know EXACTLY what you mean!
I was just thinking that lol 😆 not a criminal but nice to know.
Just wear gloves, criminals
Or...... the criminal can just wear gloves.
A lot of that seemed to rely on the person in question not wiping the surface well enough.
I can imagine it would be very hard to wipe anything down well enough to remove finger print residue. A chemical agent would probably be better but character adjustment is more economical and definitely less stressful.
Very well done! Thank you! The animation is excellent!
5:29 Jesse Pinkman and Mike Ehrmantraut? :D
Beautiful explanation
Informative.thnx.
Did u mention that sodium and glucose are released from our hands when we touch objects?
So is it also a myth or reality that wearing gloves will 100 percent gives guarantee to prevent your fingerprints
I absolutely love this channel 🥰..... The videos are engaging and fun.... Would you please make some more Chemistry videos. Chemistry is definitely boring for me. However, it is important and can save your life. For example not mixing certain chemicals together - Ammonia and Bleach!!
Also, I would like to see a video about DNA😊
Glad you liked the channel 😊. We already have videos on the topics that you have mentioned. You can check these ruclips.net/video/sTUYvQl6_bs/видео.html and ruclips.net/video/YovwL0LwkUg/видео.html
@@Scienceabc Thank You for providing the links🙏🙏🥰.... Please keep making more content!!
Now now criminals u need to be careful now😆😆
I know, right!
@@Scienceabc yeah😆
why some criminal get away with it
A technology and a counter to that technology go hand in hand. To shoot down supersonic planes, you build superfast missiles. So, newer planes are even faster so that they can outrun the existing tech. But, then, they make even faster missiles. Similarly, the most advanced methods of fingerprint detection can find fingerprints in most cases, but there will always be some cases where those methods won't work. No method is perfect, as you will learn in this video
@@Scienceabc right, i always thought they only use the expensive method on serious case, so the minor crime get away with luck.
🔥🔥👌🏼👌🏼
Why does the detective look like Justin Trudeau?
I don't like that thumbnail; that cartoon bozo looks like Justin Trudeau