Mitsui Fudosan, a real estate developer, and construction firm Kajima developed a 300-ton pendulum that will act as a counter-weight to long-period seismic waves. The pendulums when installed atop a skyscraper, can shorten vibrations and reduce swaying caused by earthquakes by as much as 60 percent.
The way the device does this is by swaying in the opposite direction of the seismic wave. The innovation can play a significant role in the way high-rise buildings are protected from earthquakes specially in developing countries.
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