منابع نور LEDبهمن ۱۶, ۱۳۹۴
جدول تفکیک تعرفه های خدمات مهندسی در سال ۱۳۹۴بهمن ۱۶, ۱۳۹۴
Q. In order to understand how we see, we need to understand color and light. What is the relationship between the two?
A. Light is electromagnetic energy. It is the “visible” portion of this energy that enables the mechanism of sight. Simply put, the perception of seeing occurs when the “visible” light (which is composed of different wavelengths—colors such as red, orange, yellow, green, blue, violet) hits an object and is then reflected back and received by the eyes and brain to complete the perception of seeing.