Today as I was doing my science, I came across this statement:
"In essence, then, the Special Theory of Relativity says that the speed of light is the ultimate speed limit because nothing can travel faster than light....As a result, the general view of science is that no matter how much energy you expend, you can never travel faster than the speed that light travels in the same substance." (Exploring Creation With Physical Science, page 376)
This raised a question for me. Can light travel through solid substances such as iron or wood or aluminum? Since sound can travel through wood (oak) at 3848 m/sec, does that mean that light can also travel through wood, but at a faster speed? I already knew that light was the ultimate speed limit, but I just came out of a study of sound, so this was a question that naturally popped up. I am not entirely certain of the nature of light, so I don't know if electricity would be counted as light, since it can flow through iron and aluminum.