Because white light from an LED bulb is not all spectrums of light. It’s 3. It’s pure red, pure green, and pure blue that stimulates our cones equally so our brain can’t tell the difference. Like how TVs can make any color out of just three colors of sub pixel.
White light from an incandescent bulb is all spectrums of light. Through a prism it makes a rainbow. White LEDs through a prism make three stripes. For more information of this and some visuals check out this article. https://en.wikipedia.org/wiki/Color_rendering_index
Because white light from an LED bulb is not all spectrums of light. It’s 3. It’s pure red, pure green, and pure blue that stimulates our cones equally so our brain can’t tell the difference. Like how TVs can make any color out of just three colors of sub pixel.
White light from an incandescent bulb is all spectrums of light. Through a prism it makes a rainbow. White LEDs through a prism make three stripes. For more information of this and some visuals check out this article. https://en.wikipedia.org/wiki/Color_rendering_index