10;29 in the event of an earthquake, the central column vibrates with the different period from that of the main tower. and their vibrations (4 words). 地震の際は、心柱の揺れの周期は塔体の揺れの周期とは異なるので、お互いの揺れを相殺する。
[Begin Japanology] Season 5 EP33 :Tokyo Skytree 2012-10-11
