Poynting's vector
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A vector that represents the flow of energy in an electromagnetic wave. Its magnitude is equal to the energy passing through a unit area perpendicular to the direction of the electromagnetic wave's propagation per unit time. It was introduced by the British physicist Poynting. Source: About Shogakukan Digital Daijisen Information | Legend |
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電磁波のエネルギーの流れを表すベクトル。その大きさは、電磁波の進行方向に垂直な単位面積を単位時間に通過するエネルギーに等しい。英国の物理学者ポインティングによって導入された。
出典 小学館デジタル大辞泉について 情報 | 凡例 |
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