#Throwback a 51/2 inch #sound #wave – #science #earrape from March 19, 2014. #frequency – #headphoneusersbe… https://t.co/aHQBJ71lBL



via Twitter https://twitter.com/InfoNobodyNeeds

March 28, 2016 at 03:23PM

Leave a comment

Your email address will not be published. Required fields are marked *


+ 7 = twelve

Leave a Reply