The conversation between human and AI assistant.
What is the candela? What is it used for?
Is there a difference between the candela and other units of light measurement like the lumen or lux?
Yes, there is. While the candela measures the brightness of light in a specific direction, the lumen measures the total amount of light that a source emits in all directions. The lux, on the other hand, measures the amount of light that falls on a surface.