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gunblaze
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How is White light form?
I know that it is a combination of 7 colours...But just want to know how the 7 light with different frequencies merged?
Understanding White Light Formation
- Thread starter gunblaze
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In summary, visible light is composed of a range of frequencies from 400nm to 700nm, but is often divided into 7 colors by Newton for numerological reasons. The colors in a rainbow bleed into each other, indicating a combination of many different frequencies. However, the primary colors of the visible spectrum are red, green, and blue, and combining them with equal intensity creates white light. All other colors in the visible spectrum can be created by combining these three colors with varying intensities.
How is White light form?
I know that it is a combination of 7 colours...But just want to know how the 7 light with different frequencies merged?
- #2
Integral
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Actually visible light is composed of much more then 7 colors. The visible spectrum is composed of any frequency in the range 400nm to 700nm. This region was arbitrarily subdivide into 7 colors by Newton. It is said that his believe in numerology dictated the 7. If you look at a rainbow there are only 6 easily identifiable colors. Notice when look at a rainbow that the division between the colors is not sharp, one color bleeds into the next this is an indication that there are a great many different frequencies combining to create the colors we see. Do a wiki search on Superposition principle to learn more about how the different waves combine.
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Galileo
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Still, you can divide the visible spectrum into thirds.
On the left end (largest wavelength) is red, in the middle is green and on the other end is blue.
Red, green and blue are considered the primary colors of the visible spectrum.
If you add these colors with equal intensity you will have white light.
You can also get every other color in the visible spectrum by combining (or adding by superposition) these three colors with varying intensities.
On the left end (largest wavelength) is red, in the middle is green and on the other end is blue.
Red, green and blue are considered the primary colors of the visible spectrum.
If you add these colors with equal intensity you will have white light.
You can also get every other color in the visible spectrum by combining (or adding by superposition) these three colors with varying intensities.
Related to Understanding White Light Formation
1. What is white light?
White light is a type of electromagnetic radiation that is visible to the human eye. It is a combination of all the colors of the visible spectrum, which range from red to violet. When these colors are combined together, they create the perception of white light.
2. How is white light formed?
White light is formed when all the colors of the visible spectrum are combined together in equal amounts. This can occur naturally, such as when sunlight passes through water droplets to create a rainbow, or artificially, such as in a light bulb or computer screen.
3. What is the role of the eye in perceiving white light?
The human eye contains specialized cells called cones that are responsible for detecting color. When white light enters the eye, the cones are stimulated by the different wavelengths of light and send signals to the brain, which then interprets the combination of colors as white light.
4. How is white light different from other types of light?
White light differs from other types of light, such as infrared or ultraviolet light, because it contains all the colors of the visible spectrum. Other types of light, such as infrared, only contain a small range of wavelengths that are not visible to the human eye.
5. Can white light be separated into its component colors?
Yes, white light can be separated into its component colors through a process called dispersion. This can be achieved by passing white light through a prism or diffraction grating, which separates the different wavelengths of light and creates a rainbow of colors.