Corn LED Bulb 12W E27 Waterproof

Luminous flux: symbols Φ, unit lumens Lm that luminary second the sum total of the amount of light emitted by the luminous flux.

Light intensity: symbol I, unit candela CD, shows the light flux emitted by the luminous body in a specific direction.

Illumination: symbol E, the unit lux Lm/m2, indicates that the luminosity is illuminated by the luminous flux in the unit area of the object.

Luminance: symbol L, unit neb CD/m2, which indicates the luminous flux in the unit area of the photobody in a specific direction.

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