i think it would be easier to calculate in that to measure the unit LUMEN in which i must require the periphery and the radiation angle. for the radiation angle it will be easily calculated with stick perpendicular to Earth and then using F = Iv × 2π × (1 - cos(A/2)), this law might be...
hello Forum
i am a novice physics learner. actually i want to calculate or construct an equation through which i can measure the maximum brightness of moon's light on our planet.
can anyone give me any idea from where to start?