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All electromagnetic (EM) radiation travels at the same speed in a vacuum. However in a different medium, for example a glass triangular prism, the speed depends on the frequency of the EM radiation, and on the material it travels through. Generally for transparent materials, infra-red will travel faster than visible light.
This frequency dependence of the speed is what causes dispersion and can be seen in rainbows.
What else can I help you with?
Does ultraviolet light have a lower frequency than visible light?
No, ultraviolet light has a higher frequency than visible light. Visible light has wavelengths between about 400 to 700 nanometers, while ultraviolet light has shorter wavelengths below 400 nanometers.
What are the two Parts Of The Electromagnetic Spectrum That Are Close To Visible Light?
On one side: infrared radiation. On the other side: ultraviolet radiation.
Is the wavelength of infra-red light to short to be seen?
Yes, the wavelength of infrared light is too long to be seen by the human eye. Infrared light has longer wavelengths than visible light, ranging from about 700 nanometers to 1 millimeter, which is beyond the visible spectrum for humans.
What type of electromagnetic radiation does an infrared telescope collect?
infra-red telescope is a telescope in which you can look at everything in the waves of infra-red.
What solar energy called blank radiation is felt as heat and wavelength longer than that of red light?
The solar energy you are referring to is called infrared radiation. It has longer wavelengths than visible red light and is felt as heat when it is absorbed by an object.
How is heat tranferred by radiation?
First of all it is important to note that heat and infra-red rays are NOT the same thing. When an object gets really hot it starts to glow, emitting red light at first, (hence the phrase: 'red hot') because red is the least frequency. Hotter objects emit light of higher frequency. A light bulb and the Sun are both examples of this. But infra-red rays are even lower in frequency than red light. Infra-red rays are emitted in the same way by objects at room temperature. That means you, your computer and everything around you are 'glowing' with this infra-red radiation. Infra-red rays carry energy between objects at the speed of light. This process causes relatively hot objects to cool down faster.
What part of light is heat?
Infra red part of light is responsible for heat.
What band of light is below the visibile spectrum?
Infra Red
Would radioactive isotopes be seen as infra red light?
no
Why do you see a white spot on the camera-display when you make a photo of a remote-control?
Because remote controls use infra red light to communicate with the TV, stereo or what ever the remote is for. Infra red is a type of light we cannot see with our eyes, but cameras and video cameras turn infra red into visible light.
Will a remote control work through a drywall?
A TV remote? Probably not. TV remotes work via infra-red light. When you press a button, the command is sent to the TV through the infra-red light on the remote, which is picked up by an infra-red receiver on the front of the TV. Light cannot travel through walls. Infra-red extender systems are available to allow a remote in one room to operate equipment in another and can be purchased at AV dealers or on line. If you mean a remote for a racing car or something, then yes, because these work by radio waves, not infra-red light, which can pass through most walls, depending on the strength of the waves.
What animal can see uv rays and infra-red light?
Goldfish
What are the em waves that are just below visible light?
Infra red.
How does the visible spectrum compare the the entire electromagnetic spectrum?
it is slap bang in the midde of the spectrum, with Ultra Violet light on one side, and Infra red on the other. In a vacuum it travels at the same speed as all of the others (the speed of light) UV has a shorter wavelength, and Infra red has a slightly longer one.
What kinds of photography depend upon infrared light?
If you actually mean infra-red light, it is simply infra-red photography. Color and b&w infra-red film as well as filters for electronic flash may still be available from specialty suppliers. If you are referring to images created by recording heat energy emissions, it is not really infra-red photography. That is correctly referred to as thermography.
What is the danger of infrared light?
Infra-red light is heat, so if you have a lot of it, you will suffer from burns...
What colour of light will be absorbed first as the sunlight enters water?
Infra-red
