Final answer:
The plural of 'lumen' is 'lumina,' and the term is associated with the measurement of light output in lumens and illuminance in lux.
Step-by-step explanation:
False, the plural of lumen is lumina. Lumen is a Latin-derived term used in various fields such as biology and engineering to denote a unit of measure.
In the context of lighting, lumens measure the total amount of visible light emitted by a light source, and the term is often mentioned when discussing the light output of bulbs.
The luminous flux of a bulb can, for example, be 2,000 lm, which represents the light radiated in all directions. On the other hand, illuminance measures the number of lumens per square meter, given in units of lux (lx), and describes how much light falls on a surface such as a reading area.