What is Brownian motion and what is Brownian motion

Brownian motion. The phenomenon of suspended particles moving irregularly is called Brownian motion.

This was discovered in 1826 by the English botanist Brown (1773-1858) who used a microscope to observe pollen suspended in water. Later, this motion of suspended particles was called Brownian motion. Brownian motion can be observed not only in pollen and small charcoal particles, but also in a variety of different suspended particles in liquids.

So, how did Brownian motion come about? What appears to be a liquid under a microscope is actually made up of many molecules. The liquid molecules are constantly moving in an irregular motion, constantly grasping at the senior particles.

The suspended particles are small enough to be hit by liquid molecules from all directions in an unbalanced manner. At one point, the impact of the particle in the other direction is strong, causing the particle to move in the other direction. In this way, the irregular Brownian motion of the particles is caused.

The particles of Brownian motion are larger than the molecules, and it is a macroscopic manifestation of the irregular motion of the molecules.

The phenomenon of suspended particles moving irregularly is called Brownian motion.

Brownian motion is used in the field of chemistry.

Solid particles suspended in a gas or liquid are hit by the molecules of the gas or liquid and move in a never-stopping, irregular motion, which is called Brownian motion.

Molecular thermal motion is used in the field of physics.

The molecules are constantly moving in an irregular motion.

Brownian motion is the irregular motion of an object, in essence, Brownian motion is a macroscopic manifestation of molecular thermal motion, the motion of molecular atoms is the thermal motion of molecules in the strict sense, and Brownian motion is a phenomenon that we can see with the naked eye, and the collection of molecular atoms without saying is macroscopic Brownian motion.

Brownian motion is the never-ending, irregular motion of particles suspended in a liquid or gas. It is a normally distributed, independent incremental continuous stochastic process, which is one of the basic concepts in stochastic analysis.

Its basic property is that Brownian motion w(t) is a normal random variable with an expected 0 variance and a variance t (time). For any r less than or equal to s, w(t)-w(s) is independent of w(r) and is a normal random variable with an expected 0 variance of t-s.

It can be proven that Brownian motion is a Markov process, a martingale process, and an Ito process.

These small particles are surrounded by liquid molecules, and due to the thermal motion of liquid molecules, the small particles are collided with liquid molecules from all directions, and the Brownian particles are collided with an unbalanced impact, and move in the direction of the larger impulse. And because of this unbalanced impact, the impulse obtained by the Brownian particles constantly changes direction.

Brownian motion refers to the never-ending, irregular motion of particles suspended in a liquid or gas. It got its name from the discovery by the English botanist Brown

The diameter of the particles in Brownian motion is generally 10 microns, and when these small particles are in a liquid or gas, due to the thermal motion of the liquid molecules, the particles are collided with liquid molecules from all directions, and when they are hit by an unbalanced impact, they move.

As a result of this unbalanced collision, the movement of the particles constantly changes direction and the particles move irregularly. The intensity of Brownian motion increases as the temperature of the fluid increases.

The phenomenon of irregular motion of suspended particles impacted by molecules is called Brownian motion. Brownian motion is a liquid that appears to be a piece of fluid, but under a high-powered microscope, it is actually made up of many molecules.

The liquid molecules are constantly moving in an irregular motion, constantly hitting the suspended particles at random. When the suspended particles are small enough, they are unbalanced due to the impact of liquid molecules from all directions.

At a certain moment, when the particle is hit in another direction by a strong force, the particle moves in other directions, which causes the irregular motion of the particle, that is, Brownian motion.

Due to the irregularity of molecular motion, the magnitude and direction of the impulse force of each molecule on the small particle are not the same at every moment, and the magnitude and direction of the resultant force change at any time, so the Brownian motion is irregular.

The phenomenon of suspended particles moving in an irregular manner without stopping is called Brownian motion.

Brownian motion refers to the phenomenon of tiny particles moving irregularly in a fluid.

Brownian motion: 1. Brownian motion was developed by the British botanist RDiscovered by Brown in 1827, it is the cause of colloidal stability.

2. Brownian motion is a macroscopic manifestation of molecular thermal motion, which is a unique, random and irregular particle motion.

3. The occurrence of Brownian motion is related to tiny particles and also related to temperature. If the temperature is higher, the Brownian motion will be more pronounced; If the temperature is lower, the less pronounced the Brownian motion is.

4. Brownian particles move irregularly. The higher the temperature, the more intense the Brownian motion. It indirectly shows that the molecules of matter are in perpetual, irregular motion.

However, Brownian motion is not limited to the above-mentioned Brownian particles suspended in liquids or gases, and all small objects that are hit by the molecules of the surrounding medium will also make small irregular flutters near their equilibrium position.

Brownian motion formula:

x(t) = mean of the exact position of the side wall of the epithelial cell) + mean of random displacement) + mean of determined displacement). Among them, the average value of the random displacement is 0, and the average value of the determined displacement is proportional to the time.

The use of Brownian motion in life:

1. Life-sustaining breathing

Brownian motion can cause particles in the air to move irregularly, and these particles can act as a line of defense for the respiratory system to prevent harmful substances from entering the human body.

2. Test the quality of the product

The phenomenon of Brownian motion can be used to help detect the quality of the product, such as the purity of solids, the uniformity of liquids, etc.

3. Commercial application:

Brownian motion also has many commercial applications, such as helping to test the quality of products, detecting the clarity of liquids, separating molecules, and more.

4. Scientific experiments:

Brownian motion can also be used to help scientists study the laws of motion of molecules, for example, Brownian motion experiments can help scientists discover the irregular motion of molecules, thus proving the existence of molecular thermal motion.

5. Engineering application:

Brownian motion also has many applications in engineering, for example, in fuel engineering, Brownian motion can be used to make the fuel fully combusted, and the combustion efficiency can be improved.