We have all experienced the Doppler Effect - a train going past us as we waited on a platform, or an emergency services vehicle driving toward us, sirens blasting. We have heard that "shift" or change as the sound goes from "approaching us" to "next to us" to "moving away from us".
But...have you ever seen a geeky "science guy" demo the Doppler Effect with his car? Video.
Want to see a detailed explanation of what's going on? Click here.
