Human eyes are limited to seeing a small portion of the electromagnetic spectrum because of the specific range of wavelengths that our eyes' photoreceptor cells, known as cones, are sensitive to. The human visual system is most sensitive to wavelengths of light between approximately 400 to 700 nanometers (nm), which corresponds to the visible light spectrum.
The ability of bees to see ultraviolet (UV) light is due to their possession of photoreceptor cells called "UV receptors" or "blue receptors." These receptors are sensitive to shorter wavelengths of light, including ultraviolet light, which has wavelengths below 400 nm. This additional sensitivity to UV light enables bees to see colors and patterns that are invisible to humans.
To see a larger spectrum of electromagnetic waves, including UV light or other parts of the electromagnetic spectrum, significant biological changes would be necessary. These changes could involve the development of specialized photoreceptor cells that are sensitive to a broader range of wavelengths.
Additionally, the structure of the eye itself would need to be modified to allow the transmission and focusing of different wavelengths. This could include changes to the lens and other components involved in the formation of images on the retina.
However, it's important to note that the ability to perceive and interpret a broader range of electromagnetic waves would require more than just biological changes in the eye. It would also involve changes in the brain's processing capabilities to make sense of the additional sensory information.
While it is theoretically possible to imagine such modifications, they would represent significant evolutionary changes and are not currently observed in humans.