Light & Image: Understand Absorption Effects

In summary: It does not convert the light into another color, but simply filters out certain ranges of wavelengths.
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richardz03
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I understand obviously that the image and light will be kept but it will become a little bit green. But what happen in a very specific way especially about absorption??
 
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The green glass functions as an absorption filter, absorbing much of the light that doesn't fall within a specific range of wavelengths. In this case, the glass will absorb a significant amount of the light that falls outside of the area of the spectrum we call green. The absorbed light ends up heating the glass.

Note that the glass isn't converting the light into another color, it is simply filtering out certain ranges of wavelengths (and thus colors) so that they do not pass through, allowing only the range of wavelengths you want to pass through.
 
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  • #3
Drakkith said:
The green glass functions as an absorption filter, absorbing much of the light that doesn't fall within a specific range of wavelengths. In this case, the glass will absorb a significant amount of the light that falls outside of the area of the spectrum we call green. The absorbed light ends up heating the glass.

Note that the glass isn't converting the light into another color, it is simply filtering out certain ranges of wavelengths (and thus colors) so that they do not pass through, allowing only the range of wavelengths you want to pass through.

Thank you ! great explanation
 

1. What is absorption in the context of light and images?

Absorption refers to the process by which light energy is absorbed by a material, causing a decrease in the intensity of light passing through it. In the context of images, absorption can affect the colors and brightness of the image, as certain materials may selectively absorb certain wavelengths of light.

2. How does absorption affect the colors in an image?

Absorption can affect the colors in an image by selectively absorbing certain wavelengths of light. For example, if a blue object is placed in front of a white background, the blue object will absorb all colors except for blue, which will be reflected and perceived as the color of the object. This is why objects appear to have different colors under different lighting conditions.

3. What is the Beer-Lambert law and how does it relate to absorption in images?

The Beer-Lambert law is a mathematical equation that describes the relationship between the concentration of a substance and the amount of light it absorbs. This law is commonly used in image processing to correct for the effects of absorption, as it can help determine the amount of light that is being absorbed by different materials within an image.

4. Can absorption be used to enhance or manipulate images?

Yes, absorption can be used to enhance or manipulate images in various ways. For example, certain materials may be used as filters to selectively absorb certain wavelengths of light, which can result in color enhancements or effects in images. Additionally, absorption can also be used to create contrast and depth in images, as objects that absorb more light will appear darker and objects that absorb less light will appear brighter.

5. What are some common materials or substances that exhibit strong absorption effects in images?

Some common materials or substances that exhibit strong absorption effects in images include pigments, dyes, and filters. These materials are often used in photography and image processing to manipulate and enhance colors and contrast in images. Additionally, certain types of glass and plastics may also exhibit absorption effects, which can impact the appearance of images taken through these materials.

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