A friend of detective Conan, to some extent, worships Conan's inscrutable knowledge. In fact, it is just a common sense problem that we are easy to come into contact with in our daily life. It's easy to know if we've come into contact with or learned about it. Of course, only if you have careful observation. People who have practiced uneven bars will grow special cocoons on their legs. People who practice high and low parallel bars should always touch the bars with their thighs. The requirement of action is that the thigh should balance the body, so leaving traces on the thigh is a professional feature.

There are wet marks on the front of the clothes, but not on the back. This is the evidence of running in the rain. The kidnapping of the chairman's daughter is a newcomer. Dr. Allen said it when he proved that he was a newcomer. A person runs in the rain. When he runs, his body blocks the air in front of him, forming a low pressure area behind him, resulting in a pressure difference. The high-pressure air flows to the low-pressure area to form wind, and the falling rain is tilted by the wind. At the same time, when it rains, it is accompanied by a long wind. Rain is generally inclined, and the wind speed on the back is also accelerated, which reduces the probability of getting wet on the back.

But if you run with your back to the wind, the probability of getting wet back to back is very high. Detective Conan's interesting knowledge is as simple as that. 3. The surgeon's index finger has the trace of inclination. "There is a gift threat every month." When a surgeon performs an operation, he will fix a thin thread with two fingers and tie a knot, so it is also a professional feature to leave such a mark in front of the index finger. When sodium hydroxide is taken out and put into the air, it absorbs water quickly and becomes highly toxic when it is liquid. Please note that this is because sodium hydroxide only accepts water and will not react with water.

Only the water vapor absorbed by the air is dissolved and corrosive. The poison mentioned here should be wrong. There is a thin wound on the left hand, which is located between the thumb and forefinger of the palm. He is a Japanese kendo learner. "Antique collector's killing" generally means that the swordsman has a knife in his right hand and a knife in his left hand, so he has a certain degree of abrasion.