# Comparing sound waves to waves in a Coaxial Cable aka T.E.M.

## Homework Statement

Compare sound waves to waves in coaxial cables a.k.a. T.E.M.

I really have no idea how to answer this question. I've been researching and researching, and so far i can't find any information about WAVES for coaxial cables. Any help?

Thanks.

## The Attempt at a Solution

turin
Homework Helper

What does the "T" in "TEM" stand for? For that matter, the "EM" is another difference.

What does the "T" in "TEM" stand for? For that matter, the "EM" is another difference.

The T means Transverse am i correct?

turin
Homework Helper
The T means Transverse am i correct?
Yes. Can you think of a reason why this is different than a sound wave? Well, actually, that is a little bit more complicated, but I don't want to confuse you. Let's just assume sound in a fluid, like air.

Yes. Can you think of a reason why this is different than a sound wave? Well, actually, that is a little bit more complicated, but I don't want to confuse you. Let's just assume sound in a fluid, like air.

I know that air is trapped between the inner and outer conductor, but what i don't know is how their waves are different... I might not be descriptive enough, let me know if im not.

turin
Homework Helper
I know that air is trapped between the inner and outer conductor, ...
No, it's not. (at least, not for a good quality one.) Probably, they are asking about a sound wave in the air (not in the coax), and then to compare this to the kinds of wave in a coax that are TEM.