Кеплер заңдары

Ғаламшарлардың қозғалуын сипаттайтын маңызды үш заңды Иоганн Кеплер ашқан.

Байланысты экстралар

Let’s get to know the sources of sound!

Let's use musical instruments and our vocal cords as sources of sound.

Seconds pendulum

How can this pendulum accurately measure time in seconds?

Let's measure time!

This lesson presents timekeeping devices and the types and units...

Pitch and frequency, Part I

Experience the relationship between pitch and frequency through...

Cartesian diver

Objects denser than water sink in water.

Sound waves all around us • Part 2

In this lesson you will learn more about how sound propagates.

The wave phenomena of sound

When does echo form? Why does sound spread easier at night? What...

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