What are infrared waves used for?
Infrared (IR) light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark. The heating effect of IR can cause burns to the skin.
What is an example of infrared radiation?
Even objects that we think of as being very cold, such as an ice cube, emit infrared. For example, hot charcoal may not give off light but it does emit infrared radiation which we feel as heat. The warmer the object, the more infrared radiation it emits.
What is meant by infrared rays?
Infrared radiation, that portion of the electromagnetic spectrum that extends from the long wavelength, or red, end of the visible-light range to the microwave range. Invisible to the eye, it can be detected as a sensation of warmth on the skin.
What are examples of infrared?
The heat that we feel from sunlight, a fire, a radiator or a warm sidewalk is infrared. The temperature-sensitive nerve endings in our skin can detect the difference between inside body temperature and outside skin temperature.
How is infrared transmission used in daily life?
The most common use of infrared in everyday life is remote controls. These work by sending pulses of infrared that spell out a message to an electronic device. This device could be a television, blu-ray player, or even a computer.
What are the characteristics of infrared?
Infrared waves have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption. Thus, infrared energy can also reveal objects in the universe that cannot be seen in visible light using optical telescopes.
Is infrared rays good for health?
Infrared therapy has many roles in the human body. These include detoxification, pain relief, reduction of muscle tension, relaxation, improved circulation, weight loss, skin purification, lowered side effects of diabetes, boosting of the immune system and lowering of blood pressure.
What are 3 sources of infrared radiation?
Such objects include the Sun and the planets, certain stars, nebulae, and galaxies. A number of known infrared sources can be observed at the wavelengths of visible light and in certain cases at radio and X-ray wavelengths as well.
What are two sources of infrared radiation?
Infrared radiation (IR), or infrared light, is a type of radiant energy that’s invisible to human eyes but that we can feel as heat. All objects in the universe emit some level of IR radiation, but two of the most obvious sources are the sun and fire.
What devices use infrared waves?
Many of the most common uses of infrared radiation are in the area of electronics, as infrared light can be used to transmit signals and data over small spaces. Remote controls, for instance, commonly use infrared light to transmit signals for controlling devices such as televisions and other household electronics.
What are the harmful effects of infrared waves?
Exposure to intense electromagnetic radiation, including infrared radiation, can damage the lens and cornea of the eye . This is one reason why staring at the sun is harmful (and unintelligent). People who work near intense radiation must wear goggles. Large doses of infrared waves can also damage skin and tissues .
What are the applications of infrared?
Heat Source. Medical uses: Infrared radiation finds application as a heating source.