Why does the sound appears like a hammer hitting the building when a strong lightning occurs between the clouds?

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How are cancerous cell lines generated in 1900s sold today have the same genetic profile?

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G.s. Vasantha Kumar

Dear Kenneth C. Chen

Thank you very much for your explanation.can I get still elaborated source on any internet link?

Thank you very much for the information

With regard

Vasanth

Majid Abdulhameed Ibrahim

Due to the confluence of two different gems by the electric charge that causes the sound of the thunder.

Dear Majid Abdulhameed Ibrahim

Can you elaborate the answer?