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1. 原子核大約是 10⁻¹⁵m
筆尖大約是 10⁻³m
放大率 10¹²
原子大約是 10⁻¹⁰m
放大後變成 10²m = 100m
2. 將 10⁻¹⁰ 放大到 5×10²
放大率 5×10¹²
原子核被放大到 (10⁻¹⁵) × (5×10¹²) = 5×10⁻³m
即 5mm
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