Ciro Santilli  Sponsor 中国独裁统治 China Dictatorship 新疆改造中心、六四事件、法轮功、郝海东、709大抓捕、2015巴拿马文件 邓家贵、低端人口、西藏骚乱
Describes perfect lossless waves on the surface of a string, or on a water surface.
As mentioned at: from solving partial differential equations with the Fourier series citing, analogously to the heat equation, the wave linear equation can be be solved nicely with separation of variables.


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