Illumination, also called illuminance, is the intensity of light on a given surface that is measured in lux or one lumen/m2. So the higher the lux for a lit surface, the brighter the light intensity, and hence easier for a user to see or read.
Question2: What is candela?
Answer:
Lux is a derived SI unit based on lumen, and lumen is a derived unit based on candela, which is a unit of luminous intensity defined as brightness rating of a light source expressed as cd/m2. The higher the candela, the brighter the light source and more irritating to the eye. In another sense, candela may be seen as an eye-irritating level of a light source.
Question3: How to clean and maintain a Tiffany lamp?
Answer:
Clean with cotton cloth or cotton ball (dry or wet), then coat to protect with paste car wax.
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