Visible Light

Visible Light is an electromagnetic (EM) radiation such as the radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves that can be perceived by the human eye, usually from 380 nm to 750 nm (400 to 700 nm).

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ThePD (The Project Definition)

ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.