Join the science discord! https://discord.gg/pw5sZ3PTye Thanks 23andme for sponsoring my video :) Get your own kit at https://www.23andme.com/Backyard Backyard Science Merch! null Ive always wondered what would happen if you lined up 10 megaphones in a row and yell into them, today I put that idea to the test! That literal feedback loop was crazy loud! Crash Zone - https://www.youtube.com/watch?v=_J-uKNb6TaI kuam news - https://www.youtube.com/watch?v=EAqUelpwEl8 A great resource on measuring sound & power - https://www.gcaudio.com/tips-tricks/the-relationship-of-voltage-loudness-power-and-decibels/ High speed camera - Chronos 1.4