O slideshow foi denunciado.
Utilizamos seu perfil e dados de atividades no LinkedIn para personalizar e exibir anúncios mais relevantes. Altere suas preferências de anúncios quando desejar.

Fingerprint

4.665 visualizações

Publicada em

Fingerprint

Publicada em: Educação
  • Entre para ver os comentários

Fingerprint

  1. 1. Fingerprints Fedor Pavlović Ivo Andric Primary School Belgrade, Serbia Project:
  2. 2. Project The purpose of my project is to find out if fingerprint patterns are inherited and is one pattern more dominant within the same family.
  3. 3. What is fingerprint? Fingerprints are the tiny ridges, whorls and valley patterns on the tip of each finger. They form from pressure on a baby's tiny, developing fingers in the womb. No two people have been found to have the same fingerprints -- they are totally unique.
  4. 4. Fingerprints are ideal for this purpose because they're inexpensive to collect and analyze, and they never change, even as people age.
  5. 5. All of the ridges of fingerprints form patterns called loops, whorls or arches:
  6. 6. Francis Galton devised a method for classifying fingerprints that proved useful in forensic science.
  7. 7. What is Forensic Science? Forensic science is the application of science to criminal and civil laws, mainly—on the criminal side—during criminal investigation, as governed by the legal standards of admissible evidence and criminal procedure.
  8. 8. Materials Microscope Glass bottle Brush Tape Baby powder
  9. 9. Instead of forensic powder, you can use either baby powder, corn starch, or cocoa powder. I used a baby powder. I applied the powder using a brush.
  10. 10. If your fingerprint is on a dark surface, use the baby powder; if on a light one, cacao. Only the tips of the bristles should be covered with powder. Then, tap the brush to remove any excess powder.
  11. 11. Gently sweep the brush carefully over the area where you put your fingerprint. Make sure to not apply too much pressure so that you do not wipe the print away. If necessary, add more powder to the brush, but be careful not to add too much.
  12. 12. Use a piece of clear tape and carefully press the tape down onto the surface on top of the developed fingerprint. Peel the tape off and transfer the fingerprint onto a piece of paper. (If you used dark cacao, use white paper; for baby powder, use black.)
  13. 13. Fingerprints were incomplete. I achieved a much better result using a glass surface of a mobile phone.
  14. 14. How to get the fingerprint? First you take the pen and draw on the post it until it has a very black surface. Then rub the finger you want to "print" hard on the post it until its all black. Now to lift the print take a piece of the tape and put on the finger, rub it and lift it. After that you just put it on the paper. After that, I took the fingerprints of my family members and analyzed them
  15. 15. loop whorl
  16. 16. Conclusion In conclusion, I found that fingerprints are inherited from biological parents because they are very similar. I realized that my mom and I have a loop structure, and my brother and dad have the structure of the circle.
  17. 17. These are the sites I used for the project: https://sr.wikipedia.org/sr-ec/ %D0%9E %D1%82%D0%B8%D1%81%D0% B0%D0%BA_%D0%BF %D1%80%D1%81%D1%82%D0% B0 http://elementarium.cpn.rs/teme/

×