On Friday 1 August,2008
We had a lecture about fight crime with science, we got more knowledge about how to proof the evidences from the murder or the person who done a mistake.
the policemen have a lot of sciences, materials and chemicals to find the evidence.
I’ve got the technical of police to find the evidences
1. DNA stand for Deoxyribonucleic acid, at the present time the police find the evidence department use DNA to find the evidence from the murder.
and it is surely to specific the murder because nobody has the same DNA except twin and parents. They can check from skins, blood and hair.
2. Footprint: are typically used by the prosecution to prove an individual committed a crime, or at least were present at the scene of a crime and could have committed it. Footprints are not as unique as a fingerprint or DNA evidence, but under the right circumstances, they can be enough for a criminal conviction. When the prosecution looks at a footprint as evidence of criminal activity. in the lib, I saw from the video lecture, the chemical use the black paper and then push the brush on the black paper and turn it back, during painting it use the chemical to make the foot mark appear after that wait time about 1 minute so the foot mark will appear on the paper.
3. CCTV (Closed-circuit television)is the use of video cameras to transmit a signal to a specific, limited set of monitors. In London has CCTV more than 4000 for looking around the city even on the road and tube stations. In each day our face are shown on the CCTV about 3000 times per day, it shows that in the city; everywhere has CCTV for look and protect the criminal and also it can identify the murder as well
4. Eyes Scan; it use in the building before enter in, id the eyes are not recognize by the memory, the scanner will reject immediately, I think it is good to protect the stranger and criminal because it can protect at the firs time.
During I was seeing the video lecture, I realized that every process in the lab for finding a evidence is carefully and seriously in order to correctly specific the murder
We had a lecture about fight crime with science, we got more knowledge about how to proof the evidences from the murder or the person who done a mistake.
the policemen have a lot of sciences, materials and chemicals to find the evidence.
I’ve got the technical of police to find the evidences
1. DNA stand for Deoxyribonucleic acid, at the present time the police find the evidence department use DNA to find the evidence from the murder.
and it is surely to specific the murder because nobody has the same DNA except twin and parents. They can check from skins, blood and hair.
2. Footprint: are typically used by the prosecution to prove an individual committed a crime, or at least were present at the scene of a crime and could have committed it. Footprints are not as unique as a fingerprint or DNA evidence, but under the right circumstances, they can be enough for a criminal conviction. When the prosecution looks at a footprint as evidence of criminal activity. in the lib, I saw from the video lecture, the chemical use the black paper and then push the brush on the black paper and turn it back, during painting it use the chemical to make the foot mark appear after that wait time about 1 minute so the foot mark will appear on the paper.
3. CCTV (Closed-circuit television)is the use of video cameras to transmit a signal to a specific, limited set of monitors. In London has CCTV more than 4000 for looking around the city even on the road and tube stations. In each day our face are shown on the CCTV about 3000 times per day, it shows that in the city; everywhere has CCTV for look and protect the criminal and also it can identify the murder as well
4. Eyes Scan; it use in the building before enter in, id the eyes are not recognize by the memory, the scanner will reject immediately, I think it is good to protect the stranger and criminal because it can protect at the firs time.
During I was seeing the video lecture, I realized that every process in the lab for finding a evidence is carefully and seriously in order to correctly specific the murder
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