"ETERNITY" a very clever time based art work.

Eternity (full 12 hours) from Alicia Eggert on Vimeo.

'eternity' is a wall mounted sculpture made by american artists alicia eggert & mike fleming, consisting of 30 electric clocks
rear-mounted to a large sheet of white acrylic. during installation, the black hour and minute hands of the clocks are aligned
to spell the word ‘eternity’, and the clocks are plugged in to a series of power strips on the floor. the hands begin to move
as soon as the switch on the last power strip is flipped, and the word almost immediately becomes a jumble of moving black lines.

'eternity' does not reappear until the hour hands return to their original positions twelve hours later. and even then, it last a mere split second.

Courtesy of Design Boom:

http://www.designboom.com/weblog/cat/10/view/16203/alicia-eggert-mike-fleming-eternity.html