| This is important because a long wavelength means that the sound wave can pass around barriers, like rocks, easily. |
| The bubbles grow in size until they are collapsed rapidly by the compression region of the sound wave. |
| The sound wave appears in the first dozen pictures as a hazy ring of light, opening out from the center of explosion. |
| According to the wave theory, a condensation and rarefaction are necessary to constitute a sound wave. |
| Once this is done, you would need to place as many as 400 small speakers in various parts of the room so that the sound wave can be amplified. |
| During the low-pressure phase of each sound wave, bubbles expanded rapidly. |
