Can two people have the same fingerprints? Detailed answer

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Can two people have the same fingerprints? Detailed answer

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Can two people have the same fingerprints?

If you put your finger on an ink pad and then put it on white paper, you will get a print that no one else in the world can replicate! This applies to any of your fingers. Each of your ten fingerprints is completely unique, and they remain virtually the same throughout your life! Nature simply created different patterns for the skin relief of each human finger.

This fact was probably first discovered by the Chinese more than 2000 years ago. In those days, the Chinese emperors put thumbprints on important documents instead of signatures. The fact that there are no two identical fingerprints was first proved in 1892 by the English scientist Sir Francis Galton. And in 1901, Scotland Yard adopted a system of identification, or identification of criminals, by their fingerprints, which was developed by Sir Edward Henry. This system, which has undergone minor changes, is used by police officers around the world.

And here is a summary of Sir Henry's system. All prints were divided according to the type of pattern: arc patterns, loop patterns and scroll patterns. If you count the number of lines between two points in the picture, then each of the ten fingers can be attributed to a specific group.

By using an even finer classification within each group, fingerprints can be quite reliably identified. This system is so secure that the prints could easily be classified into these groups, rather than using the names of the perpetrators. And even if there are millions of prints in the police archive, the right print can be found in a matter of minutes.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How dangerous are asteroids?

The asteroid hazard scale, adopted by the International Astronomical Union, is graduated from 0 to 10 points.

Zero gets an asteroid whose orbit, although it intersects with the orbit of the Earth, but it has no chance of a collision. Ten marks an asteroid, the fall of which can lead to a global climate catastrophe

Among about 2000 asteroids with a diameter of more than a kilometer, crossing the Earth's orbit, all are "null".

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brain temperature 08.06.2022

Scientists from the Laboratory of Molecular Biology of the Medical Research Council in Cambridge were able to measure the temperature of the human brain.

Forty volunteers aged 20-40 years were recruited, whose brains were scanned in the morning, afternoon and late evening using magnetic resonance spectroscopy. At the same time, an activity monitoring device was attached to the wrist of the participants in the experiment, which makes it possible to take into account differences in genetics and lifestyle - the biological clocks of "owls" and "larks" work differently.

The temperature of the organ varies depending on the region of the brain, age, gender, time of day and the menstrual cycle in women.

The average brain temperature was 38,5 degrees, more than two degrees above the temperature measured under the tongue.

The surface of the brain was generally colder, while the deeper structures of the brain were often warmer than 40 degrees (the record during the study was 40,9 degrees).

The temperature of the brain constantly changed depending on the time of day by almost one degree, while the highest was observed during the day, and the lowest was at night.

It is noteworthy that, on average, the female brain was 0,4 degrees warmer than the male.

Experts believe that this gender difference is most likely due to the menstrual cycle, since most of the participants in the study were scanned in the post-ovulatory phase of their cycle: their brain temperature was about 0,4 degrees higher than that of women who were in the pre-ovulation phase.

The temperature of the brain increased with the age of the participants, especially in the deep regions of the brain.

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