has dimension has unit 単位を持つ has value 値を持つ luminous flux F Luminous flux is the total visible energy emitted by a source per unit time. luminous flux unit quantity 量 attolumen attolumen candela steradian candela steradiaal centilumen centilumen decalumen decalumen decilumen decilumen exalumen exalumen femtolumen femtolumen gigalumen gigalumen hectolumen hectolumen kilolumen kilolumen lumen lumen luminous flux dimension megalumen megalumen microlumen microlumen millilumen millilumen nanolumen nanolumen petalumen petalumen picolumen picolumen teralumen teralumen