"Prove that the Earth is Rotating" Earth's Movement PPT

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"Prove that the Earth is Rotating" Earth's Movement PPT

Part One: Characteristics of Pendulum

A French physicist named Foucault (1819-1868) accidentally discovered when studying the laws of the pendulum at home: Place the pendulum and its bracket on a circular chassis, swing the pendulum and rotate slowly When the base plate is round, the direction of the pendulum swing does not rotate with the rotation of the disk, but remains basically unchanged.

Let us also conduct a similar experiment.

1. Use an iron stand as a stand and hang a pendulum.

2. Place the iron stand and pendulum on a round base. First let the pendulum swing back and forth, and then slowly and steadily rotate the circular chassis.

3. Observe the changes in the direction of the pendulum swing after the disk rotates.

Note: Do not shake the table, blow on the pendulum, or let the wind blow the pendulum, so as not to affect the experimental results.

Prove that the earth is rotating PPT, part 2: Foucault’s pendulum

In 1851, 300 years after the "heliocentric theory" was published, Foucault experimentally confirmed that the earth is rotating based on his findings in daily life.

Foucault hung an iron ball pendulum with a length of more than 60 meters and a weight of 27 kilograms in a tall dome building, and drew a dial on the ground below the pendulum. At that time, many people came to watch this wonderful experiment.

The pendulum started to swing, and as time passed by, people were surprised to see that the direction indicated by the dial and the direction of the pendulum swing were quietly "deflecting", and they were deflecting in the clockwise direction. Since the pendulum keeps swinging in the same direction, this proves that the Earth is rotating. People finally saw the earth rotating with their own eyes.

Prove that the earth is rotating PPT, part 3: explain day and night phenomena

Which of the possible explanations for the day-night cycle should we rule out? Which ones to keep?

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Update Time: 2024-09-30

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