Hacker Newsnew | comments | show | ask | jobs | submitlogin

I would expect ear protection (to avoid damage caused by extreme pressure changes) and volume reduction to be quite different.

http://www.wisegeek.com/what-are-safety-ear-plugs.htm




Applications are open for YC Summer 2015

Guidelines | FAQ | Support | Lists | Bookmarklet | DMCA | Y Combinator | Apply | Contact

Search: