What did Brocade come up with in that experiment in 1851

In 1851, the French physicist Jean. Foucault installed a pendulum device in the State Funeral House in Paris, with a length of 67 meters, and a pendulum at the bottom of which was a 28-kilogram iron ball, with an elongated inlay inlay under the ball.

of the needle. What is this huge device used for? It turned out that Foucault was going to prove the rotation of the earth. He.

Imagine that when the pendulum swings, it will maintain a fixed direction of swing without the action of an external force. If the ground.

When the ball is spinning, the ground below the pendulum will rotate, and the pendulum suspended in the air will maintain its original swing direction.

For the observer, the direction of the pendulum will change relative to the ground. The principle figured it out.

But the experiment was not easy to do. Since the change in the direction of the pendulum is subtle, a slightly stronger airflow will.

Make changes in the results of the experiment. Since the longer the swing arm, the more obvious the experimental effect, so in order to observe the direction.

The location of the experiment must be set up in a hall with a high ceiling, and the ceiling is used to hang the pendulum. Foucault finally.

The towering state funeral house in Paris was chosen as the place of experimentation, and a sand table was placed under the pendulum. In swing luck.

When moving, the swing tip will mark a line on the sand table, thus recording the direction of the swing.

The results of the experiment are in perfect agreement with Foucault's assumptions, and the oscillation of the pendulum appears to be slow and sustained from east to west.

Continue to rotate in the direction. Foucault's demonstration directly proved the rotation of the Earth from west to east, so people called it an experiment.

The pendulum in the "Foucault pendulum", and the French ** at that time also awarded Foucault the Order of Honor of the Fifth Degree.

In recognition of his scientific contributions. Foucault's experiments sparked a wave of experimentation around the world, with people everywhere flocking to each other.

Follow Foucault's example and use the long pendulum to reveal the rotation of the Earth. It was found that at the poles of the earth, Foucault pendulum.

The swing plane rotates once every 24 hours, while at the equator, the Foucault pendulum has no directional rotation; At the poles with.

In the region between the equators, the speed of rotation in the direction of the Foucault pendulum is in between.

The earth rotates once every 24 hours, and since the circumference of the equator is about 40,000 kilometers, people have a "sitting day."

travel 80,000 miles". At a point on the equator, the velocity is close to 500 meters per second, which is when the bullet is discharged.

speed. We flew like bullets, without a trace of feeling, due to the influence of inertia, Zhou.

The surrounding objects all follow the earth at high speed, and they are inseparable from each other. I don't know the true face of Lushan, which is the earth, only because we are in this mountain.

As mentioned earlier, Foucault's pendulum rotates at different points on the earth at different speeds, which illustrates the earth's surface.

The linear velocity of the surface varies from one location to another, so the Foucault pendulum is not only able to verify the rotation of the earth, it can also be used.

Discover the latitude at which the pendulum is located.

Did you ask Foucault?

If yes, take a look.

In 1850, Foucault used the rotating mirror method to determine that the speed of light is greater in air than in water.

In 1851, the experiment of Foucault's pendulum was successfully carried out in Paris, which directly verified the rotation of the earth

In the 19th century, the French physicist Jean Foucault made an oscillating experiment to prove the rotation of the earth, from which the Foucault pendulum got its name. Foucault pendulum In 1851, the French physicist Foucault designed a pendulum to prove the rotation of the earth, called the Bouc pendulum.

It proves that the earth is turning.

For details, you can see this**:

In 1851, the French physicist Foucault designed a pendulum to prove the rotation of the earth, called the Boko pendulum. Foucault's pendulum rope is 67 meters long, and the pendulum at the end of the rope weighs 27 kilograms. There is a graduated disc with a straight line engraved through the center of the circle.

When stationary, the center of the pendulum should be aligned with the center of the circle, and when observing, it is determined that a straight line in the disk coincides with the meridian through the center of the circle, and then the pendulum is pushed to rotate in a north-south direction along the meridian direction. After a while, you will see that the direction of the swing deviates from the direction of the meridian. Deflection to the right in the Northern Hemisphere, the longer the time, the greater the angle of the deflection.

After the pendulum starts to move, it is not affected by other forces except gravity, and according to the law of inertia, the direction of the pendulum should not change; But the pendulum is deflected. This is because of the rotation of the Earth. When we stand on the earth and rotate with the earth, we don't feel the direction of the meridian changing, but we feel that it is in a deflection position.

If Foucault were placed at the North Pole, with the pole as the center of the disk, one rotation would be 24 hours, with an hourly deflection of 15°. If the pendulum is located at the equator, it will not deviate; If the pendulum is at any latitude between the equator and the poles, the angular velocity of the deflection of the swing plane ( ) is proportional to the sinusoidal function of latitude ( ). i.e. t·sin.

t is the angle at which the Earth rotates per hour). In the Southern Hemisphere, the pendulum deflects to the left.

Are you from Changchun? I've been adopted, too, but I haven't been notified of the internship yet

The upstairs is too complicated!

First of all, it is necessary to understand that when the earth rotates, the movement of the single pendulum of the hammer hanging in a straight line in the universe is unchanged. But the Earth is rotating. Therefore, the motion that seems to be unchanging in the universe changes direction because we choose the moving earth as a reference.

Straight lines are long to magnify the effect. The speed of change varies in different parts of the earth.