What is another word for luminous flux unit?
Pronunciation: [lˈuːmɪnəs flˈʌks jˈuːnɪt] (IPA) 
The term "luminous flux unit" is commonly used in the field of optics and lighting design to describe the measurement of the amount of light emitted by a particular light source. There are several synonyms for this term, including "luminous flux," "brightness," "light output," "radiant flux," and "luminosity." Each of these terms refers to the amount of light energy emitted by a source and can be measured in different units, such as lumens or lux. While the terms may differ slightly in their technical meaning, they are often used interchangeably to describe the brightness or intensity of a light source, and are critical to determining the lighting needs for a particular space or application.
