The example of using atmospheric pressure in life, I fill the pressure cooker right or wrong

The pressure cooker uses the high air pressure in the pot to have nothing to do with the outside atmospheric pressure.

Wrong, the pressure cooker is a closed environment, and the reason for its invention was to create an environment with a higher than normal atmospheric pressure to raise the boiling point of liquids. Drinking water through a straw uses atmospheric pressure, which can be compared.

It can be miscalculated, or it can be right. A pressure cooker uses the pressure difference between inside and outside the pot. When the gas pressure in the pot is stronger than 1 atmosphere, the boiling point of the water will rise, and the food will be easier to cook. So there is still some relationship with atmospheric pressure.

This is a very challenging question, and after thinking about it for a while, the pressure cooker should be wrong, and the animal's breathing action is definitely done using atmospheric pressure, which was mostly used for temperature control in the early days (refrigerator; The temperature control switch of the air conditioner), but with the development of science and technology gradually replaced by electronic systems, the household equipment that is still in use to use atmospheric pressure should be the equipment to inflate the tires of the vehicle, such as the "pump", when the pump inhales the air, it is done by using the gas pressure difference.

False The pressure cooker has nothing to do with atmospheric pressure (the high pressure in the pot is generated by itself).

Altitude on the side with a barometer.

It is a typical example of the use of increasing air pressure, as well as wheel inner tubes, cylinders when working on internal combustion engines. It is best to use atmospheric pressure with a water pump.

Be. Xun Peng instructed the pressure cooker to close the water quite tightly, and the water vapor produced by the evaporation of the water can not be diffused into the air, but can only be retained in the pressure cooker, so that the air pressure inside the pressure cooker is higher than 1 atmosphere, and the water will only boil when it is higher than 100, so that the pressure cooker will form a high-temperature and high-pressure environment inside, and the rice will be easy to cook quickly, and it is quite crispy. <

Be. The principle of pressure cooker: the boiling point of water is affected by air pressure, the higher the air pressure, the higher the boiling point.

In the mountains and plateaus, the air pressure is less than 1 atmosphere, and the water can boil less than 100 meters, and eggs cannot be cooked in ordinary pots. When the air pressure is greater than 1 atmosphere, water does not boil until it is above 100. The pressure cooker that people commonly use is designed using this principle.

The pressure cooker seals the water quite tightly, and the water vapor produced by the evaporation of the water can not be diffused into the air, and can only be retained in the pressure cooker, so that the pure air pressure per mu inside the pressure cooker is higher than 1 atmosphere, and the water should be boiled when it is higher than 100, so that the pressure cooker will form a high-temperature and high-pressure environment inside, and the rice will be easy to cook quickly, and it is quite crispy. Of course, the pressure in the pressure cooker will not be unlimited, or it will be **.

No, pressure cookers don't work with atmospheric pressure. Although the vapor in the pressure cooker creates a certain pressure, it is not directly related to atmospheric pressure.

The working principle of the pressure cooker is mainly to increase the boiling point of the water through the vapor pressure inside the container, which speeds up the cooking process. The inside of the pressure cooker is designed by a seal so that the steam in the water cannot escape, and the steam pressure is gradually increased. When the pressure reaches a certain level, the boiling point of the water will exceed the normal 100, and the boiling point will increase to about 120.

In this way, the ingredients can be cooked faster and more evenly under high temperature and pressure.

And atmospheric pressure is just a pressure that is prevalent in our daily lives. Atmospheric pressure refers to the pressure of the atmosphere on a unit area of the earth's surface, which is known as "barometric pressure". The magnitude of atmospheric pressure varies with geographical location, climate, and altitude.

Therefore, although both the pressure and atmospheric pressure in the pressure cooker exist, the working principle of the pressure cooker is mainly dependent on the pressure of the steam inside the vessel, rather than the effect of atmospheric pressure. Pressure cookers speed up the cooking process and make food more flavorful and cooked.

The reason why a pressure cooker is different from a regular pot is that it creates a high-temperature and high-pressure environment inside.

We know that the higher the pressure, the higher the boiling point of water, for example, the boiling water temperature on the ground is 100 degrees. It may be 95 on the top of a high mountain, and 105 on the ground, because the atmospheric pressure in the mountains is small and the atmospheric pressure in the ground is high, and the ground is in between.

The pressure cooker creates a high-pressure environment by sealing the water vapor, and the high-pressure environment further raises the boiling point of the water, so that the high-temperature and high-pressure environment is generated, and the food is cooked more refreshingly.

1) The boiling point of the liquid is related to the air pressure, the smaller the air pressure, the lower the boiling point The use of pressure cooker in life is to increase the pressure of the gas in the pot, so as to increase the boiling point of the liquid

2) The greater the fluid flow velocity, the smaller the pressure at the position When blowing air into the middle of the table tennis ball, the flow velocity in the middle of the table tennis ball is large, the pressure becomes smaller, the atmospheric pressure on the outside of the table tennis ball remains unchanged, and the pressure on the outside of the table tennis ball is stronger than the pressure on the inside, so the table tennis ball is closer to the middle

So the answer is: boiling point: near: small

The pressure cooker is tightly sealed, which can increase the air pressure in the pot when used, thereby increasing the boiling point of the liquid and making the food in the pot easy to cook

Therefore, the answer is: the boiling point is lacking in a sedan car; Elevated punch posture