The hydraulic compression of the waves compressed me over a period of three seconds until I heard three bones fracturing in my shoulders.

FORBES: Larry Ellison

The period of the chop is shorter, since waves have less room to build than they do at sea.

FORBES: Windy City Sailing

The Pew Center conducted two waves of polling over a seven-day period between September 8 and Tuesday.

CNN: Latest presidential polls vary widely

Most of the tea clippers to grace the waves during the same period lasted for only a few years and just seven survived into the twentieth century.

CNN: , for