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MohamedRizk4sci (으)로 부터 도착한메세지 - English

  • Observing a Solar Eclipse

    • At 3pm in Egypt, I began to observing the solar eclipse.
    • I used convex lens to produce the image of the sun on a white board.
    • This method helped me to trace the change of the sun shape and protect my eyes too.
    • I watched on the same time the total solar eclipse on the Internet.

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