About the physical experiment of eggs, the experimental principle of eggs standing up, why can eggs

You know a few little experiments about eggs.

1. The principle that eggs can stand up: when the center of gravity of the egg and the fulcrum are in the same plumb line, it can maintain a stable state.

2. Because the two ends of the egg are in the shape of a ball crown, the center of gravity of Origa is easy to deviate from the plumb line, resulting in the egg toppling. Therefore, it is only necessary to provide a corresponding support structure at the bottom end of the egg to maintain the center of gravity of the egg.

3. The principle of the bureau and the egg is to balance the force, and there are many ways to put the egg up, such as finding the three points protruding on the surface of the egg, so that these three points constitute a plane, and then the egg can be erected, in addition to the use of salt, white sugar.

or fine sand to make the eggs stand up.

There are experiments where eggs stand up.

Sprinkle a pinch of salt on the tabletop. Place the round eggs on the salt and stand. The pellets will form a stable stand on the tabletop that supports the eggs and makes them stand.

This little experiment is that when the center of gravity of the egg is in the same plumb line as the fulcrum, it can maintain a stable state. Due to the spherical crown shape at both ends of the egg, the center of gravity tends to deviate from the plumb line, causing the egg to tip over. Therefore, only Mingqiaozi needs Hongshu to provide a corresponding support structure at the bottom end of the egg to maintain the center of gravity of the egg.

The principle of the egg erection is to balance the force, and there are many ways to erect the egg, at this time, the center of gravity of the egg is in the same plumb line as the fulcrum of the entire support structure, so that these three points constitute a plane, and then the egg can be erected.

Folk standing eggs.

Standing eggs, a Chinese festival food custom, refers to the Dragon Boat Festival at 12 o'clock at noon, because it is the extreme history of masculinity and righteousness, so it is believed that eggs that are not easy to be erected on weekdays can be erected on the ground at this time.

One is said to be the spring equinox and the other is said to be the Dragon Boat Festival.

In fact, if it is confirmed by scientific principles, it can be known that because the sun shines on the northern hemisphere on the day of the Dragon Boat Festival, the gravitational force of the sun and the gravitational force of the earth pull each other at noon, so that the eggs standing on the ground can easily achieve balance and stand up, so the standing eggs have become one of the best playful items for children during the Dragon Boat Festival.

Every year on the day of the vernal equinox, tens of millions of people around the world are doing "erection egg" experiments. It is difficult to verify why this so-called "Chinese custom" became a "world game".

But it's easy and fun to play: choose a smooth, well-proportioned fresh egg that's just been laid for four or five days, and gently hold it up on the table. Although there are many losers, there are also many successes.

The spring equinox has become the best time for the egg erection game, so there is a saying that "the spring equinox is here, and the eggs are pretty". The erected eggs are not beautiful.

Eggs stand upright: Since the eggs and table top are relatively smooth, it is almost impossible to stand eggs with bare hands. If you sprinkle a handful of salt on the table (sugar, sand and other fine particles are fine), it is much easier to stand the eggs on the salt.

If you look closely, you will find that even if all the salt is blown away, there will still be a few salt grains under the egg, and the egg does not fall over the finger stool because of these few salt grains. This is equivalent to increasing the friction between the egg and the tabletop, and if the friction is large, it will naturally not fall.

2.Bottle swallowing eggs: The lit cotton swab is placed in an empty bottle, which consumes the oxygen inside and produces carbon dioxide, which causes the total volume of gas in the bottle to decrease due to the volume of oxygen consumed being greater than the volume of carbon dioxide produced.

There are also eggs that are plugged at the mouth of the bottle, and the gas inside cannot be replenished, resulting in the gas pressure in the bottle being less than that of the outside. The eggs are pushed into the bottle by the atmospheric pressure from the outside. (The egg is elastically deformed by force.)

>3.Bottle spit eggs: Baking soda and white vinegar have a chemical reaction that produces carbon dioxide gas. When the bottle is turned upside down, the egg blocks the mouth of the bottle, and due to the limited space in the bottle, the gas increases significantly, resulting in the atmospheric pressure in the bottle being greater than the outside, and the egg will be pushed out.

The main ingredient of vinegar is acetic acid, and baking soda is sodium bicarbonate.

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Soaking of eggs: Soak a raw egg in salt water, and you will find that the egg floats, the principle is that because the salt water is denser than the egg, it can make the egg float on the water.

Egg's **: Gently throw a hard-boiled egg from a high place and you will find that it can have some ** principle because the gas inside the hard-boiled egg expands and increases the volume, and the shape of the reed becomes an elastic sphere.

Drift of the egg: Put a raw egg in a bowl full of water, add some salt and you will find that the egg will float on the surface of the water, this is because salt can increase the density of the water and make the buoyancy of the water increase, while the density of the egg is equal to the salt water, so it can float on the water.

Egg ignition: Peel a hard-boiled egg and dip it with a match until 1 o'clock, you will find that the egg will be on fire like a candle, the burning principle is that the egg white contains protein and nitrogen, and it can be burned at high temperature to produce a flame.

The purpose of agitation is to enhance the flow of the solution and make the CaCO3 reaction faster. Do not touch the wall or bottom of the beaker to prevent breaking the glass device, so stirring should not touch.

There are a lot of bubbles on the shell of the egg, and after a while, the thick egg begins to float, and many bubbles overflow, and the egg sinks again, so that the backhand is lost, and finally the shell is gone.

Put the egg in a beaker with water, the egg will (sink in the water of Qingbi Hongjin), stir in the beaker and add salt, the egg will (float), and finally (float on the water).