■忘れないように 円周角[rad] : 2 pi r [rad] = 360 [deg] と定義(/.r->1) 立体角[sr] : 4 pi r2 [sr] = 2 * 2 pi r * r = 41,252.96 [deg2] 1[deg2] = 60^2 [min2] = 60^4 [sec2]1[erg/s/cm^2] = 1e-7 1e4 [J/s/m^2] = 1e-3 [W/m^2]■icho 昨日復旧したはず…