the fabulous roommate and i were taking our mental break, watching strip the city, a ridiculously entertaining discovery program (i choose not to feel guilty because it deals with a city's infrastructure, so it's almost like doing homework). today it was rome, a city built upon ruins which were built upon ruins and so on...
moi: wow! this whole city is a palimpsest!
roommate: a pali-what?
moi: [explanation given] and now you can whip that out at a cocktail party and impress people!
roommate: i need to start going to cocktail parties.
... time passed...
roommate: ah! i know that! that's quarter wave damping!
moi: a quarta-wha?
roommate: [explanation given*] and now you can whip that out at a cocktail party!
moi: apparently i also need to start going to cocktail parties.
* i did my darndest to find you a wiki link but alas, could not. i spent whole seconds perusing the interwebs, but let's just dumb it down - it's a shock wave reduction by a quarter. if someone out there can explain it better, have at'er!