When we put all the possible wavelengths together we call this the 'electromagnetic spectrum', and it is clear that the visible light is only a tiny part of it. X-rays are light with wavelength about five thousand times shorter than blue. Light waves travel much faster than sound waves. For example, a radio wave is light with a wavelength of about one metre, or one million times larger than visible colour red. Are electromagnetic waves consisting of varying electric and magnetic fields. The point about thinking of wavelengths rather than colours is that you can now extend the idea to any wavelength size, rather than having to stick to those that we can see. Each colour has a wavelength associated with it, for example blue light corresponds to about one third of one millionth of a metre, and red light to about twice that. The Earths atmosphere is transparent to some wavelengths of microwave radiation, but not. The Sun emits mostly yellow light, but we can see a small range of colours around that, starting from the blue, through yellow, to red. Microwaves have a long wavelength, though not as long as radio waves. Radio wave has higher wavelength than light waves and X-rays because the frequency of radio waves is lower than light wave and X-rays. Here, is the wavelength, cis the speed of light and is the frequency. Both light and radio waves display usual properties of waves, such as reflection, refraction, and so forth. Light has higher frequencies than radio waves and has shorter wavelengths. Light is emitted from a relatively higher energy source/ transition than the radio waves. > All electromagnetic waves travel in straight lines through a particular medium. What is the difference between Light Wave and Radio wave The radio waves and light are both electromagnetic radiations. In fact almost everything we see is light which originally came from the Sun and has reflected from some other object around us. The relationship between wavelength and frequency is given by c. Radio waves have the lowest frequency and gamma rays the highest. Visible light has wavelengths from about 400 nm (400 x 10-9 m) for violet light through about 700 nm (700 x 10-9 m) for. It turns out that the human eye is tuned (by evolution) to detect the light that is emitted by the Sun - what we call 'visible light'. Visible light The sky as it appears at microwave wavelengths
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |