The Light Of Sight :: essays research papers

In this universe at that place atomic number 18 many an(prenominal) thing that we endurenot explain. Among these many things is unused. Light, as far as we know, come in different wavelengths and the size of the wavelength determine what type of light it is. The middle wavelength lights are what gives us the seven basic colors of red, orange, yellow, green, blue, indigo and violet. Beside these visible lights there are the lights that cannot be seen by the human centerfield. These invisible lights can be thronged into two other chemical groups the long waves and short waves.The first group of waves is the longer wavelength of light including invisible and radio waves. Radio waves, the longest wavelengths, transposition and can be volatile. Arthur C. Clarke said in the essay "The Light of customary Day" that since radio waves fluctuate so much no sentient being has ever been able to sense them. He goes on to say that if you had an eye big enough to see radio waves your eyes would be millions of measure larger than a normal eye. The next longest wave is the unseeable light waves. Infrared light is used nowadays to see in the night. Special goggles are designed to pick up infrared light making it possible to see at night.The next group of light waves are the shorter waves of ultraviolet and x-rays. Ultraviolet light, sometimes referred to as UV, is properly next to violet and is just beyond sight. UV light is what causes sunburns and can be real painful. In Arthur C. Clarks essay it states that even though UV light is not visible the retina of the human eye reacts powerfully to it. He compare the human eye to a camera and says that a obedient camera need may types of lenses made out of different types of folderol to take a good picture. The human eye has only one lens and cannot possible see UV light. The last type of light is the x-ray. The x-ray is the smallest wave and is used in the medical field greatly to take pictures through fle sh of bones. Even though x-rays are very useful they can be very dangerous. They have been know to split radio waves and can poison a human body to the focalize of death.