/sci/ - Science & Math

Hypothetically speaking, would it be possible to create some sort of in-ear sound filter? For example, earplugs that allow you to cut out certain sound frequencies? Would it also be possible to build a device that prevents sound frequencies from penetrating? I'm not talking about preventing the sound from penetrating but rather the energy of said frequencies?

Think about things in a coordinate system. Lets say you have a sin wave, and your origin is in the middle of the wave. How far below or above that line is it?

Negative numbers help preserve dirrections in many other ways. the best way to find out is to enter physics and learn about vectors, or take chem 1 and 2 to learn the difference between positive and negative energy in regard to Heat, activation, and form changes. All of these studies would be much more complicated without negative numbers

>>10997732
>babby's first quantum phenomenon
since I've picked them all before you even asked, then I'm forced to tell you one each time you ask with probability of 1/N. Wow so randumb.