Reading Irradiance from a light meterWatch
It may sound like a stupid question, but I just wanted to make sure.
Thank you so much. If I calculate the gradient of irradiance (lux) and square of the distance (m^-2) to find the constant. What would the unit of the irradiance calculated using a distance be?
I aiming to investigate the inverse square law of a laser. What would be a suitable conclusion assuming the line of the graph of irradiance against distance squared is passing through the origin?