Red at the low frequency end and violet at the high frequency end.
The longest wavelength that's visible to your individual eyes is that of the last color you can see on the red end of the spectrum. The shortest wavelength that's visible to your individual eyes is that of the last color you can see on the blue end of the spectrum. Between those lie every color you can name, every color you have ever seen, every color that any paint manufacturer can mix, and every color that any fabric designer can dye or weave. There are an infinite number of them, it's not possible to list them, and the vast majority of them don't even have names.
The visible light with the shortest wavelength (highest frequency) is the last color you can see on the blue end of the visible spectrum. The visible light with the longest wavelength (lowest frequency) is the last color you can see on the red end of the visible spectrum. In between those limits lie every color perceptible to the human eye ... every shade of paint that has ever been mixed, and every hue of fabric ever dyed. The ones that have names and the millions of others that haven't been named. Some are so close together that average, untrained human eyesight can't tell them apart, but they're different colors nonetheless because their wavelengths are slightly different. The visible spectrum is "continuous", with no 'segments'. Obviously, no complete list is possible. "Red, orange, yellow, green, blue, indigo, violet" worked fine in the 4th Grade, but it doesn't begin to scratch the surface.
By observing far away stars in our galaxy through a spectroscope, we are able to see the spectrum that appears from the substances in these stars. Each element has a unique spectrum when light is shone through it, so we are able to determine what elements make up certain stars.
Yes, titanium dioxide is a material that can reflect UV light while absorbing IR and visible light. It is commonly used in sunscreen products for its ability to protect against harmful UV radiation while remaining transparent in the visible light spectrum.
Red at the low frequency end and violet at the high frequency end.
Ultraviolet (UV) and infrared waves lie at the end of the visible spectrum. UV waves have shorter wavelengths than violet light, while infrared waves have longer wavelengths than red light.
The emission spectrum of sodium lies in the yellow region of the visible spectrum, specifically around 589 nanometers.
Beyond the visible spectrum of the rainbow lie colors such as infrared (beyond red) and ultraviolet (beyond violet), which are not visible to the human eye. These colors can only be seen with specialized equipment or sensors.
The visible light spectrum is the narrow range of wavelengths in the electromagnetic spectrum that humans can see, typically between 400 to 700 nanometers. Beyond this range lie ultraviolet and infrared radiation, which are invisible to the human eye.
The waves used to broadcast radio signals are called RF waves and these generally lie in VHF and UHF band of electromagnetic spectrum.
In the middle
Atomic emission spectra show specific wavelengths of light emitted by atoms when electrons transition from higher energy levels to lower ones. These spectra typically lie in the visible and ultraviolet regions of the electromagnetic spectrum.
The longest wavelength that's visible to your individual eyes is that of the last color you can see on the red end of the spectrum. The shortest wavelength that's visible to your individual eyes is that of the last color you can see on the blue end of the spectrum. Between those lie every color you can name, every color you have ever seen, every color that any paint manufacturer can mix, and every color that any fabric designer can dye or weave. There are an infinite number of them, it's not possible to list them, and the vast majority of them don't even have names.
You can lie to the ends of the Earth to either protect or betray your lover.
230 nm of light lies in the ultraviolet region of the electromagnetic spectrum.
The visible light with the shortest wavelength (highest frequency) is the last color you can see on the blue end of the visible spectrum. The visible light with the longest wavelength (lowest frequency) is the last color you can see on the red end of the visible spectrum. In between those limits lie every color perceptible to the human eye ... every shade of paint that has ever been mixed, and every hue of fabric ever dyed. The ones that have names and the millions of others that haven't been named. Some are so close together that average, untrained human eyesight can't tell them apart, but they're different colors nonetheless because their wavelengths are slightly different. The visible spectrum is "continuous", with no 'segments'. Obviously, no complete list is possible. "Red, orange, yellow, green, blue, indigo, violet" worked fine in the 4th Grade, but it doesn't begin to scratch the surface.