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Word of the Week: Vacuum Energy

Why is "empty space" a contradiction in terms? Videographer and science writer Brad Plummer explains in this video installment of the Word of the Week.

(Time: 2:14). You can also download the video file as a low resolution (13 MB) or high resolution (41 MB) QuickTime file.

óBrad Plummer, SLAC Today, November 13, 2009