fotoselektivity

Fotoselektivity refers to the phenomenon where certain materials or biological systems exhibit a different response to light depending on its wavelength or color. This selective interaction with light is fundamental to many natural and artificial processes. In photography, fotoselektivity is the principle behind color filters. These filters absorb certain wavelengths of light while allowing others to pass through, thereby altering the color balance of an image. For instance, a red filter will block green and blue light, allowing only red light to reach the film or sensor, making red objects appear brighter and other colors darker.

In biology, fotoselektivity is crucial for photosynthesis. Plants and algae contain pigments like chlorophyll that absorb specific wavelengths of light, primarily in the red and blue regions of the spectrum, to drive the conversion of light energy into chemical energy. Green light is largely reflected, which is why plants appear green. Similarly, the human eye's photoreceptor cells, rods and cones, are fotoselective. Cones, responsible for color vision, contain different photopigments that are sensitive to different ranges of wavelengths (red, green, and blue), allowing us to perceive a wide spectrum of colors. This selective absorption and transmission of light are key to how our visual system functions and how we interpret the world around us.