"Glass water knowledge" method skills

On October 16, the Haimen City People's Court concluded a civil dispute, which led to the methodological skills of “Glass Water Recognition”.

Event: A couple of men and women in Haimen, Jiangsu, dismissed the marriage contract, and the man asked the woman to return the bride price. When the woman returns the gold bracelet, gold necklace and other gold to the man, the man thinks that the gold is not the right color, it is a fake, the two sides hold each other, they are too noisy, and they are in court. During the mediation, without the identification equipment, the judge was inspired by the ancient story of "Cao Chong's image". Using the principle of "Archimede", the true and false of the goldware was distinguished by a glass of water. On October 16, the Haimen City People's Court concluded the civil dispute and ordered the woman to return the original goldware worth more than 30,000 yuan to the man.

When returning the bride price : the man thinks that the gold ornaments are transferred

Jiang, a young man living in Baochang Town, Haimen City, and Wang, a young woman, were introduced to determine the relationship. In March of this year, according to local customs, Jiang’s family sent a gift to Wang’s family, including 88,000 yuan in cash and gold bracelets and gold necklaces worth more than 30,000 yuan. However, after a period of time, his girlfriend Wang found that the two sides were not suitable, and proposed to terminate the relationship. However, the breakup was not so smooth. When talking about the bride price, Jiang asked the other party to return 88,000 cash and gold bracelets and gold necklaces, but was rejected by the woman Wang. The two sides failed to negotiate, and Jiang filed a civil lawsuit with the Haimen City People's Court, asking Wang to return the gift he had sent.

After the judge patiently mediated, the two sides reached an agreement that the woman returned 45,000 yuan in cash and all gold jewelry.

Just as this ordinary civil dispute is about to be resolved, it is extravagant. When Jiang sees the gold jewelry returned by the other party, he insists that the gold is not right, it is fake, and the gold bracelet and gold necklace that he sent out are “Tune the bag” and strongly urge the woman to return the original. However, Wang has denied it, saying that the gold is the original man bought.

The judges weighing on the spot found that the gold jewellery weighed about 100 grams. According to the previous trial experience, such disputes can be broken off according to the invoices for the purchase of gold instruments. But the woman said that the invoice was lost.

In the courtroom, the two men and women did not give each other and they were too noisy.

In ancient times, Cao Chong called the image : I use the "cup of water to understand gold"

While quelling the situation, the judge thought of the story of the ancient "Cao Chong's icon" and proposed to use the "Archimedes" principle in this story to identify the authenticity of the woman's gold withdrawal. This proposal was recognized by both parties. . The judge took out a paper cup and filled it with water. After heavier, he got the weight A. After the weight was overweight, he got the weight B. Then he put the gold in the full cup of water and waited for the water to overflow and get the weight C. The sum of the weights of A plus B, minus the weight C, is the weight D of the overflow water, and the volume of the overflow water is equal to the volume of the gold in terms of volume. The judge makes the molecule with the weight D of the overflow water, and uses the density of the water 1 (1 g = 1 cm3) as the denominator. The difference between the two is the volume E of the water, that is, the volume of the gold. Then the judge uses the weight of the gold. After dividing by E, the density of the gold can be obtained.

According to field calculations, the gold density brought by the woman to the court is less than 13 g/cm3, while the density of gold is 19.32 g/cm3. Thus, the judge found that the gold weapon brought by the woman was false. In the face of the facts, the woman finally admitted that she had "taken the wrong gold."

"Glass water knowledge" principle

1. You can identify true and false by calculating the density of the gold

2. Gold density is divided by weight divided by volume (other: weight divided by density is volume)

3. The volume of the overflow water is equal to the volume of the gold

step:

Step 1: with a paper cup, filled with water, to give after A heavy weight

Step 2: The gold alone is too heavy, a weight B

Step 3: The gold full cup is placed in water, the water to be too heavy overflow, a weight C

Step 4: The sum of the weight of A plus B, subtracting the weight of C, the resulting water overflow weight D

Step 5: The water overflow water weight divided by the density D 1 (1 g = 1cm3), i.e., the volume of water drawn E, i.e., the volume of gold

Step 6: B by weight of gold, gold divided by the volume of E, gold density can be obtained. Then compare the gold density to judge the true and false

Finally, Xiaobian hopes that friends can learn and learn more through such events or such identification methods!

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