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/ MacFormat 1996 October / MacFormat CD Edition MF42 (October 1996).ISO / mac / Demos / Encyclopedia of Science / DATA / 02Tacoma.MOV (.mp4) < prev    next >
Apple QuickTime movie  |  1995-04-25  |  1.5 MB  |  720x480  |  29.97fps  |  29 seconds  |  [MooV/TVOD]
Transcription: In 1940, a newly built suspension bridge collapsed during a storm over the Tacoma Narrows in Washington. The design had not allowed sufficiently for the effect of resonance. The vibrations of the strong winds matched the natural vibrations of the concrete bridge, causing it to resonate. The resonance increased the twisting and turning motion of the bridge until it broke up and fell into the river below. you