A green filter only transmits green light.
How Green Filters Interact with Light
Color filters are designed to selectively allow certain colors (wavelengths) of light to pass through while blocking others. Based on the provided information, a green filter behaves in a very specific way when light shines on it:
- Transmission of Green Light: The primary action of a green filter on green light is to let it pass through. This means that when green light encounters a green filter, it is allowed to transmit through the material.
- Absorption of Other Colors: While it transmits green light, the filter actively absorbs red light and blue light. This absorption prevents these colors from passing through the filter.
The Selective Nature of Green Filters
This selective transmission and absorption is the defining characteristic of a green filter. It acts like a gatekeeper, allowing only the green portion of light to continue on its path while stopping the red and blue portions.
Consider the effect on different light colors:
| Light Color Input | Green Filter Action | Light Color Output |
|---|---|---|
| Green | Transmits | Green |
| Red | Absorbs | None |
| Blue | Absorbs | None |
This mechanism ensures that if a mixture of light (like white light, which contains green, red, and blue) passes through a green filter, only the green light will emerge on the other side.
In essence, a green filter allows green light to pass through it freely, making it an effective tool for isolating or enhancing green colors in various applications.
