What is infrared radiation kid explanation?
From Academic Kids Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation. The name means “below red” (from the Latin infra, “below”), red being the color of visible light of longest wavelength.
What is infrared radiation simple?
Infrared radiation (IR), sometimes referred to simply as infrared, is a region of the electromagnetic radiation spectrum where wavelengths range from about 700 nanometers (nm) to 1 millimeter (mm). Infrared waves are longer than those of visible light, but shorter than those of radio waves.
What is an example of infrared radiation?
When an object is not quite hot enough to radiate visible light, it will emit most of its energy in the 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.
How is infrared radiation produced?
Earth scientists study infrared as the thermal emission (or heat) from our planet. As incident solar radiation hits Earth, some of this energy is absorbed by the atmosphere and the surface, thereby warming the planet. This heat is emitted from Earth in the form of infrared radiation.
What is infrared radiation BBC Bitesize?
Heat can be transferred by infrared radiation. Unlike conduction and convection – which need the vibration or movement of particles – infrared radiation is a type of electromagnetic radiation. When infrared radiation is absorbed by an object it is heated and its temperature rises. Light from the sun reaching earth.
How is infrared radiation used?
We use infrared radiation in many ways, including thermal imaging cameras, remote controls, fiber optic cables, infrared astronomy, and meteorology. The fact that water vapor and other greenhouses gases absorb infrared is part of why the greenhouse effect happens.
What are 3 sources of infrared radiation?
Wavelength range and sources Common natural sources are solar radiation and fire. Common artificial sources include heating devices, and infrared lamps used and in the home and in infrared saunas for health purposes. Industrial sources of heat such as steel/iron production also fall into the infrared region.
Where do you find 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 is infrared radiation AQA GCSE?
Infrared radiation is a part of the electromagnetic spectrum. This is a spectrum of waves that also includes light. Infrared is also called thermal radiation and is one way in which heat is transferred.
How do infrared waves heat objects?
The infrared radiation causes the bonds between molecules to move, releasing energy that is felt as heat. All everyday objects emit thermal energy—even ice cubes! The hotter an object is, the more thermal energy it emits. The energy emitted by an object is referred to as the object’s thermal or heat signature.
Why is infrared hot?
Infrared energy is felt as heat because it interacts with molecules by exciting them, causing them to move faster which increases the internal temperature of the object absorbing the infrared energy.
What is use of infrared?
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.
What type of radiation is infrared?
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 is a perfect black body GCSE?
An object that absorbs all of the radiation incident on it and does not reflect or transmit any radiation. Since a good absorber is also a good emitter, a perfect black body would be the best possible emitter too. As a result, an object which perfectly absorbs all radiation will be black.
Why is infrared so hot?
Infrared waves travel through the air and when they touch a surface, heat energy is released regardless of the surrounding air temperature. That heat energy excites the molecules in the object it meets which begin to vibrate and gain energy (and warm-up).
What color is infrared light?
The invisible near infrared light of CIR can be “seen” by shifting it and the primary colors over as shown at left. Near infrared wavelengths become visible as red while red wavelengths appear as green and green as blue.
What is infrared radiation?
Infrared Radiation – Electromagnetic Waves. Infrared radiation or IR also referred to as infrared, is a region of the electromagnetic radiation spectrum where the range of wavelengths is from about 700 nanometers to 1 millimetre.
What are the characteristics of near infrared and far infrared waves?
Student Features. “Near infrared” light is closest in wavelength to visible light and “far infrared” is closer to the microwave region of the electromagnetic spectrum. The longer, far infrared wavelengths are about the size of a pin head and the shorter, near infrared ones are the size of cells, or are microscopic. Far infrared waves are thermal.
How do you experience infrared radiation first-hand?
To experience infrared radiation “first-hand, put your hand next to a hot oven! What is Infrared Radiation? Infrared radiation (IR), sometimes known as infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light.
What are the applications of infrared waves in everyday life?
Applications of Infrared Waves 1 Heat Source. Medical uses: Infrared radiation finds application as a heating source. 2 Cosmetology Application. 3 Astronomy. 4 Massage Therapy. 5 Infrared Photography. 6 Infrared Communication. 7 Interesting Facts About Infrared Radiation.