>Just remember Arthur Clarke's words: "Any sufficiently advanced technology is indistinguishable from magic". In you were transported back to ancient times, given today's knowledge and technology, almost any gadget you could demonstrate could label you as a deity with supernatural powers. Does that prove you are a God? No.
>But they would believe it.

OTOH, if your time warp machine had a faulty Pentium chip in it, and you landed in a wrong century, you'd be burned as a witch...