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⚡💥gatick💥⚡
Zhang Heng adalah seorang ilmuwan, insinyur, astronom, dan penemu terkenal dari Dinasti Han Tiongkok. Salah satu penemuan paling terkenal dari Zhang Heng adalah adalah seismograf pertama yang dapat mendeteksi gempa bumi dan menunjukkan arah gempa bumi yang terjadi dari jarak jauh. Seismograf Zhang Heng menggunakan sebuah bola perunggu dengan mulut naga di sekitarnya dengan pasak kecil dihubungkan dengan 8 jalur yang masing-masing dihubungkan dengan pasak kecil yang digunakan untuk menunjukkan a...
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