If you're seeing this message, it means we're having trouble loading external resources on our website.

Jeżeli jesteś za filtrem sieci web, prosimy, upewnij się, że domeny *.kastatic.org i *.kasandbox.org są odblokowane.

Główna zawartość
When you clap your hands or play music, you hear a sound. But what is sound? And how sound is produced? That's the topic of this lesson.
Let's talk about the speed of sound. In this lesson, we will derive a relationship between speed, wavelength, and frequency of a wave. We will also explore the meaning of longitudinal waves.
You may have heard of ultrasound. But what is it? Why is it used? Let's explore it in this lesson

O tym dziale

There are sounds all around us. But the clap of your hand sounds very different from that of a flute. Why? How sound is produced? How do we hear it? Why do we sometimes hear echoes? Are there sounds that we can't hear? In this chapter, we will explore these and many more such questions.