Why put a paper clip in a bottle full of water, the water will not spill 5

This is becauseWater moleculesTightly bound together, producedSurface tension, "Propped up" the needle. I picked up the detergent and squeezed it into the water, and the needle sank, because the detergent destroyed the surface tension, so the needle sank.

Earlier, the conformist clerks stacked them together, or tied them in a roll with straps, or sewn them together with threads. But when you suddenly need it, it takes a lot of time to find one of them.

In the mid-19th century, tailors began to pin documents to the corners of the paper with pins to make it easier to find, but their fingers were often punctured. The idea of inventing a safe and effective office supply was born in the brains of three people almost at the same time, but it is generally believed that the inventor of the paper clip was Norway.

Mathematician John Waller, because of the earliest of the three, his design sketches are dated 1899.

In Norway, this has always been a source of special pride for its countrymen. World war ii.

During this period, the German occupation forces forbade Norwegians to use buttons bearing the initials of the Norwegian king, and in order to emphasize their fidelity to their national traditions, they pinned paper clips to their clothes. Not only that, but in February 1990, it was also in the capital Oslo.

A 5-meter-high paperclip-shaped stainless steel monument was erected in the city center.

Because water has a certain viscosity and tension, even if a full glass of water is put in, when the paper clip is inserted, the water surface rises up, but the water at the edge of the cup is not separated due to the stickiness between the water molecules and the water molecules, so if the volume of the object is small enough, the surface of the water will bulge due to tension, so it will not overflow.

Because the size of the paper clip is small, and the liquid level in the most critical bottle is not horizontal, but concave downward, after the paper clip is inserted, the water surface only changes the degree of depression, but does not remain from the edge.

Although you can see that the water surface is slightly higher than the mouth of the bottle, the tension of the water surface does not overflow immediately, and generally the more mineral content the water contains, the greater the tension.

Put a few paper clips in a full glass of water, and the water will not overflow, indicating that the water has surface tension.

In our daily life, the phenomenon of water droplets hanging on the branches but not falling after rain, and the water surface being slightly higher than the mouth of the cup without overflowing, are all the results of surface tension.

The surface tension of a liquid is a property of the liquid itself, which is mainly determined by the liquid itself. The surface tension of inorganic liquids is much greater than that of organic liquids, which means that the surface tension of liquids is related to the type of liquid.

The surface tension of water and organic liquids are smaller than that of water, the surface tension of organic liquids containing nitrogen, oxygen and other elements is larger, and the surface tension of liquids containing F and Si is the smallest. Aqueous solution: if it contains inorganic salts, the surface tension is greater than that of water; Contains organic matter and has less surface tension than water.

Indicates that water has surface tension.

Surface tension is the cohesive force exhibited by the molecules of a liquid, which allows the surface of the liquid to resist the external force exerted on it to a certain extent. It is because of the surface tension that coins or needles can float on the surface of the water, despite their density being greater than that of water.

The water droplets that condense on the leaves in the early morning and the water droplets that fall slowly from the faucet are all formed by the action of surface tension. In addition, water striders.

The reason why it can stand on the water surface is also due to the effect of surface tension.