the amount of light that passes through, is emitted, or is reflected from a particular area, and falls within a given solid angle
the luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction, i.e. luminous intensity divided by unit area; measured in stilbs or apostilbs
“The lumination of fireworks filled the night sky with vibrant colors.”
“It was nearly dark, and the tiny white lights she had strung up like holiday decorations in the cherry laurel had come on by their timer and delivered the garden into an almost Christmassy lumination and loveliness.”
“O dang it, Roger, did 'e ever see sich a sight afore? My gom! what a glorious lumination like! My goles! what a mort of gentry-folk!”
“He placed it in the thin streak of daylight, and its luminousness was almost immediately restored.”
“Paul Wilson Neymar had proved his luminousness yet again – discounting Portugal, perhaps no other country relies as heavily on its star – and even Fred, onside or not, was about to postpone a doubt or two.”