Osisi Ekeresimesi Onye rụrụ ya nwara ịkọwagharị akara ngosi akụkọ ọdịnala, osisi ekeresimesi, site na iji ụdị ọhụụ na ihe ọhụrụ. Nke kachasị, ọ tụkwasịrị uche na mmepe nke ihe nke mechara bụrụ otu ihe ahụ na ihe ndị dị n’ime ya, na-echepụta igbe-igbe wee bụrụ ebe nkwado mgbe ekpughere ya. N’ezie, mgbe ejighị ya, igbe osisi ji mkpụrụ osisi cylindrical kpuchie ya ma chekwaa ya, ebe ọ bụ n’iru ekpughere ya n’ịdị nkọ, kpuchie ya n’ọkụ n’ogologo ogologo ya nile, nke na-akwalite vetikalik nke ihe a haziri ahazi.

Aha oru ngo : A ChristmaSpiral, Aha ndị na-emepụta ya : Francesco Taddei, Aha onye ahịa : Francesco Taddei.

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