viewimage.php?id=3db5c935ecd139aa7dbcdfb018d221&no=24b0d769e1d32ca73dec83fa11d028313e457d3f472465ed713dd3021d942a46dcd8fcf7d33e441e4a93619e97f29170b942948360980cb11b00dd03d3f44ce4b7c43e51c7d87ee6bebef4f31f7633590ec0d9bf5f7822b2ddb11cecd2f4b0

동시성의 상대성ㅡ빛이 출발하는 순간이 내/외부 동시가 아님

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