Quite simply, because there are individual differences between species. In this case, the range of the electromagnetic waves they can see is a little larger for some animals. I don't think that ALL animals, or even all animals with eyes, can see a larger range of radiation than humans.
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Some animals can see infrared and ultraviolet rays because they have special photoreceptor cells in their eyes that are sensitive to those wavelengths of light. This allows them to perceive a wider range of colors and navigate their environment more effectively.
Ultraviolet radiation, X-rays, and gamma rays are three forms of radiation that humans cannot see. These forms of radiation have wavelengths shorter than visible light and are not within the visible spectrum.
Infrared and Ultraviolet light fall just outside human vision. The frequency of infrared light is less than the frequency of visible red light. There are different definitions and classifications of infrared, but the frequency ranges from 3 x 10 11 Hz (300 Gigahertz or 1000 micrometer wavelength) to about 4.3 x 10 14 Hz (0.7 micrometer wavelength). Ultraviolet's frequency is greater than the frequency of Violet light. This can range from 7.5 x 10 14 Hz (400 nanometer wavelength) to 3.0 x 10 16 Hz (10 nanometer wavelength). See related links.
Humans cannot see ultraviolet and infrared colors.
Nonvisible radiation refers to types of radiation that cannot be perceived by the human eye, such as ultraviolet, infrared, and radio waves. Although they are not visible, these forms of radiation can have various effects on living organisms and the environment. Safety precautions are often necessary when dealing with nonvisible radiation sources.
No, I am a computer program and cannot see light. Ultraviolet light is invisible to the human eye, but certain animals like bees and birds can see in the ultraviolet spectrum.