Good quality light is made up of different colors of light. The multi colored rainbow is seen when light is split by small water drops acting as prisms. “VIBGYOR” is a short version of the different colors constituting white light. You can create your own rainbow by using a compact disc. When you hold a CD towards light the prismatic layer of the CD breaks up light into its constituent colors and you can see all the colors constituting light.
Violet, Indigo, Blue, Green, Yellow, Orange and Red are the visible colors of light. Red is the least energetic and violet light is the most energetic of the lot. A spectrum also contains invisible light. As their names suggest – Infra Red light comes before red light and Ultra Violet comes after violet.
A good source of light like LED bulbs produces full spectrum light i.e., light with all colors. Human beings do not need Infrared or UV lights as they cannot be seen by our eyes. In fact both Infrared and UV light may damage art objects and paintings in your house.
The spectrum of UV, visible and IR light radiation. For lighting purposes it is only the colored portion of the spectrum that is important. IR and UV lights can damage art objects. Besides art objects, UV light also harms the skin. Incandescent bulbs produce 95% of their output in the invisible infrared range making them highly energy inefficient..
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How Do We See Colors?
White light has all the different light colors in almost equal proportions. When white light strikes an object, most colors of light are absorbed and a few are reflected. The color of an object is determined by the color of light it reflects. It is important that a light source emits light with all the colors of light in it.
If light from a source does not have a particular color of light, objects of that color cannot be seen in their natural colors. This is why sodium lights are so bad at reproducing colors. Sodium light is what is called a narrow spectrum light. It is made of primarily yellow light. When an object of a color other than yellow is placed under sodium lights different shades of yellow are the only color that is reflected and almost every object has a sickly hue. LED products produce natural colors as the light is well balanced and contains an optimum spread of all light colors.
