Between the bumps and dips of two surfaces. SO the answer is 2 surfaces. Hope this helps! :)
Yes they can. Uh-huh. Indubitably. That's right, Vanessa. It's true.
A better way to say it might be:
Electromagnetic radiation can behave like waves AND like particles.
Answer: short displacement has shorter road and long displacement has longer displacement . now think your self Which one is right
