保ほ存ぞん量りょう

noun

conserved quantity

Physics term for a quantity that remains constant in a closed system, such as energy, momentum, or electric charge.

• エネルギーは閉とじた系けいにおける保ほ存ぞん量りょうの一ひとつだ。

  Energy is one of the conserved quantities in a closed system.

• 運うん動どう量りょう保ほ存ぞん則そくは、運うん動どう量りょうが保ほ存ぞん量りょうであることを示しめしている。

  The law of conservation of momentum shows that momentum is a conserved quantity.