17.1k views
0 votes
How do you know the speed of an electromagnetic wave of a vaccum

1 Answer

4 votes
It travels at the speed of light, in a vacuum. Through any other medium it travels slower than the speed of light, depending on the medium.
User ChaoYang
by
8.4k points

Related questions

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.