Refraction and Diffraction  Refraction and diffraction sure
sound the same, so why are they so different? In this BrainPOP
movie, Tim and Moby teach you the similarities and differences
between the two processes. For instance, you’ll see why both are
properties of waves! You’ll learn about light waves and photons,
and how they can bend when moving through different materials.
Find out how the speed of light can change when moving through
objects with different densities, like air, water, or glass. And
discover how light, sound, and radio waves can bend or spread
around an obstacle, plus how scientists use diffraction to study
everything from DNA to stars in outer space! We’re talking about
the wave of the future, here!  Watch the Science movie about
Refraction and Diffraction »  What is reflection and refraction?
How does a prism split white light into colors?  Can you see
rainbows from space?