red is the longest wavelength in the visible spectrum.
red is the longest wavelength in the visible spectrum.
the longest wavelengths in the visible spectrum are?
red
many species can see light within frequencies outside the human "visible spectrum". bees and many other insects can detect ultraviolet light, which helps them find nectar in flowers. plant species that depend on insect pollination may owe reproductive success to their appearance in ultraviolet light rather than how colorful they appear to humans. birds, too, can see into the ultraviolet (300–400 nm), and some have sex-dependent markings on their plumage that are visible only in the ultraviolet range. many animals that can see into the ultraviolet range cannot see red light or any other reddish wavelengths. bees' visible spectrum ends at about 590 nm, just before the orange wavelengths start. birds can see some red wavelengths, although not as far into the light spectrum as humans. the popular belief that the common goldfish is the only animal that can see both infrared and ultraviolet light is incorrect, because goldfish cannot see infrared light. similarly, dogs are often thought to be color blind but they have been shown to be sensitive to colors, though not as many as humans. some snakes can "see" radiant heat at wavelengths between 5 and 30 μm to a degree of accuracy such that a blind rattlesnake can target vulnerable body parts of the prey at which it strikes, and other snakes with the organ may detect warm bodies from a meter away. it may also be used in thermoregulation and predator detection. (see infrared sensing in snakes)
visible spectrum
visible spectrum









































the visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. electromagnetic radiation in this range of wavelengths is called visible light or simply light. a typical human eye will respond to wavelengths from about 380 to 740 nanometers. in terms of frequency, this corresponds to a band in the vicinity of 430–770 thz.
visible spectrum