Everyday Science · 45 sec
Reflection (physics)
The science behind something you encounter, use, or wonder about.
The useful idea
- The useful idea
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.
- How it works
Common examples include the reflection of light, sound and water waves.
- Why it matters
The law of reflection says that for specular reflection (for example at a mirror) the angle at which the wave is incident on the surface equals the angle at which it is reflected.
Why this matters
Look for Reflection (physics) the next time you notice this pattern in everyday life.
Try this
Look for Reflection (physics) the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Reflection (physics)?
- The useful idea — correct
- How it works
- Why it matters
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.