if something emits colored light, does it create a continuous spectrum?
If something emits colored light, is that more likely to be a continuous spectrum or a line spectrum?
I understand that WHITE light WILL be continuous, but will colored light be lined or continuous spectrum?
- billrussell42Lv 71 decade agoFavorite Answer
white light is not necessarily of a continuous spectrum, and neither is a colored light.
There are other categories between continuous and line spectrum. A spectrum can be concentrated at one color and not be continuous across the spectrum and yet not a line spectrum.
LEDs are an example. The light emitted is in a fairly narrow band, but is not a line spectrum. A red LED, for example, has wavelengths of 610 to 760 nm
The white from a color TV using LCD or Plasma technology is actually 3 colored dots close together that simulate white.
- gp4rtsLv 71 decade ago
A colored light could be either a continuous or a line spectrum. The line spectrum from a single element will be generally more brilliantly colored than a continuous spectrum, but both can be colored. The color of a continuous spectrum depends on the relative intensities of the parts of the spectrum.
It is also theoretically possible to obtain a white light from a line spectrum by mixing of emitters so that the line colors produce a white. For example, a red, blue and green laser each emit a line spectrum, but when combined can produce white. "White" refers to the appearance of the light to the eye, not the spectral composition.