response: Indeed, for example there's infrared radiation. It has longer wavelength than visible light's wavelength, which makes it invisible to human eyes.
original_response: Indeed! For example infrared radiation is invisible to humans but detectable by science instruments!
history: Red is my favorite color. I love wearing this color. Do you like the color red? No color preferences here! I do understand it is by orange on the visible spectrum of light. What are all the colors of the visible spectrum? I'm honestly not aware of that info but do you find it interesting that the human eye responds to wavelengths of 390 nm to 700 nm? That is interesting, can you tell me more about these wavelengths? Not much to share on wavelengths, however have you heard of "wavelength-division multiplexing"? That's typically applied to an optical carrier. Wow that's pretty complex sounding! Earlier you mentioned the eyes respond to a certain wavelength, are there any that we know of that we can't see?
knowledge: Infrared radiation is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore invisible to the human eye.