[openbook booknumber="OLID:OL24906649M"]
Pluck a string and it vibrates. As it vibrates there are points along the string where it is absolutely still. Pluck a companion string and sometimes those points line up. If you pull that string tighter there are more points of stillness and a greater chance …

Earlier this week, Lumifi Inc. announced a new version of their research platform "to better serve students, professionals and others in dealing with information overload." Lumifi is a private corporation based in Maryland, and this is their second major release of their service. (The first was announced in January 2008 …