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What is the basic mechanism responsible for emission of visible radiation in an LED?
by applying a voltage across the boundary of two semi-conductors electrons are forces to travel across the boundary. This boundary has a voltage drop and the electrons are required to lose a discrete amount of energy in crossing it. In the case of the light emitting diode, it is a energy in the range of visible light.
What else can I help you with?
What is the color of alpha radiation?
Alpha radiation does not have a colour. In order for something to have a colour, it must emit rays of visible light. Alpha radiation and light are two different things which have little to do with each other.
What type of electromagnetic radiation do supernovas release?
Supernovas release a wide range of electromagnetic radiation, including visible light, X-rays, and radio waves. This emission is a result of the intense energy and heat created during the explosion of a star.
What does fluoresce mean?
Fluoresce means to emit light or glow when exposed to ultraviolet radiation or certain wavelengths of light. This phenomenon is commonly seen in certain substances like fluorescent markers, minerals, or biological materials.
Electromagnetic radiation to which the organs of sight react?
Visible light is the electromagnetic radiation that the organs of sight, such as the eyes, react to. This type of radiation falls within a specific range on the electromagnetic spectrum and is responsible for enabling humans and other animals to see objects and colors.
How hard surfaces Emmit and absorb radiations?
Hard surfaces like glass, metal, and concrete are generally good at reflecting radiation, especially in the visible light and near-infrared spectrum. However, they can also absorb some of the radiation, depending on their composition and properties. The absorption and emission of radiation by hard surfaces are influenced by factors such as color, texture, and temperature.
What is calorescence?
Calorescence is the absorption of infrared radiation and emission of visible light.
What three forms of radiation are from the sun?
The three forms of radiation from the sun are visible light, infrared radiation, and ultraviolet radiation. Visible light is responsible for the light we see, while infrared radiation and ultraviolet radiation are not visible to the human eye but have important effects on Earth's climate and environment.
What is the definition of visible light radiation?
Visible light radiation is a type of electromagnetic radiation that is visible to the human eye. It falls within a specific range of wavelengths in the electromagnetic spectrum, from approximately 380 to 750 nanometers. This type of radiation is responsible for the colors we perceive in the world around us.
Which parts of the Sun's radiation are responsible for heating Earth's surface?
The visible light and infrared radiation from the Sun are primarily responsible for heating Earth's surface. Visible light is absorbed by the Earth's surface, warming it up, while infrared radiation is absorbed by greenhouse gases in the atmosphere, trapping heat and contributing to the greenhouse effect.
What is light in physics?
Lightis an electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight.
What radiation is in fire?
Fire emits electromagnetic radiation, including infrared, visible light, and ultraviolet light. These forms of radiation are responsible for the heat and light emitted by flames.
How does visible cause earth surface to become warmer?
Visible light is an insignificant portion of the solar radiation that warms the Earth. The sun's infrared radiation, also known as 'heat', is responsible for virtually all of it.
What elements emit radiation in the visible part of the spectrum?
Elements such as cesium and rubidium can emit radiation in the visible part of the spectrum when they undergo certain processes like atomic emission or fluorescence. These elements release photons of visible light as they transition from a higher energy state to a lower one, typically in the red or violet range of the spectrum.
Which form of electromagnetic radiation is visible?
Visible light is a form of electromagnetic radiation that is visible.
What is the color of alpha radiation?
Alpha radiation does not have a colour. In order for something to have a colour, it must emit rays of visible light. Alpha radiation and light are two different things which have little to do with each other.
Is there a difference between thermal radiation and infrared radiation?
Thermal radiation is the emission of electromagnetic waves due to an object's temperature, encompassing a range of wavelengths including infrared radiation. Infrared radiation specifically refers to the portion of the electromagnetic spectrum with longer wavelengths than visible light, commonly associated with heat.
Gamma radiation is of lower energy than visible radiation?
No. Gamma radiation is of higher energy than visible (light) radiation.
