red
Sound waves are much longer then light waves.
The colour of visible light with the longest wavelength is red (approximately 700 nanometres).
No, Infra-red has a longer wavelength than Ultraviolet.
Orange has a longer wavelength than yellow. On the spectrum of visible light red is longest and violet is shortest.
Shorter or longer than what ? The wavelength of visible light is shorter than that of radio and heat, and longer than the wavelength of X-ray and gamma radiation. And the wavelength of green light is shorter than red light but longer than blue light.
Bright Orange-RedA normal commercial aircraft's "black box" is orange. It was likely chosen because orange has the longest wavelength after red. As the wavelength increases, the wave travels a longer distance. Seeing that red is already reserved for Danger signs, what follows after red is... orange.
Yes.
The wavelength of infra-red light is LONGER than the wavelength of red light, and longer than anything to which the eye responds.
Blue light has shorter wavelength than red light. Remember ROYGBIV? If you reverse the sequence - VIBGYOR, you have all the colors listed from shortest wavelength to longest wavelength in the visible spectrum. Or, you can just simply consult an electromagnetic (EM) spectrum.
Visible light has the spectrum VIBGYOR. Violet is at one extreme having highest frequency and red is at the other end having least frequency. Less frequency means having longest wavelength, since wavelength and frequency are inversely related. As we go beyond violet then it is named as ultraviolet. Same way as we go beyond red, then it known as infra red. So its wavelength has to be greater than that of red. Hence longer wavelength for IR radiations. IR is what we call 'thermal' radiation, in other words, 'heat'.
Red light has the longest wavelength that's visible to the eye.Violet light, just past blue in the rainbow, has the shortest wavelengththat's visible to the eye. It's roughly half the size of a wave of red light.