조도의 국제 단위인 럭스의 기호로, 1제곱미터당 1루멘의 광속이 비춰질 때의 밝기를 나타냄.
The symbol for lux, the SI unit of illuminance, equal to one lumen per square meter.
예문:
"The light meter showed a reading of 500 lx in the office."
"For professional photography, the studio lighting must reach at least 1000 lx."
"The standard unit for measuring light intensity on a surface is lx."