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<b_jonas> learn wisdoms.pdf Nicely formatted wisdoms and quotes book at] https://dl.dropboxusercontent.com/u/2023808/wisdom.pdf
author HackBot
date Sun, 08 May 2016 14:00:02 +0000
parents 108a459f8aab
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Like the shorter and more familiar strings of stringed musical instruments, the cable of a space elevator has a natural resonant frequency.