Besides an ideal source of lift for your balloons, helium is also ideal for making your voice high and squeaky, but how does ...

When you speak, your voice reaches your ears in two ways: through the air and through your body. Normally, we hear sounds through air conduction, where sound waves travel through the air ...

With advanced technology and artificial intelligence, we are now able to listen to these cosmic whispers in ways that were ...

Sound, just like light, is a wave. Consequently, both exhibit many parallel phenomena: Your voice echoing in a canyon, for example, is mathematically analogous to light bouncing off a mirror.

Save guides, add subjects and pick up where you left off with your BBC account. A nail hit hard with a hammer will have a lot of energy so will cause a strong vibration. This means the sound waves ...

Sound doesn’t just help us hear music or communicate underwater—it can also be used to move objects without physically ...