Question

What is the relation between light and heat?

Answer 1

Hey mate here is your answer》》

☆Heat and light are different but they are both forms of energy. Heat is a form of kinetic energy contained in the random motion of the particles of a material. Light is a form of electromagnetic energy. As with other forms of energy, heat energy can be transformed into light energy and vice versa.

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Answer 2

Heat can be produced by light and light also can be produced by heat. Are they exist at the same time or one is the transform of the other? The answer can be explained with a loop.

If we start with light, the combination of visible light and infrared, it generates thermal radiation which cause increasing in temperature when applied to an object. Thermal radiation, as an electromagnetic wave, has greater energy (heat) with short wavelength. Because of its undulatory property and particle nature, the energy it contained is able to transmit to the object. When the energy of an object is high enough, visible light might be emitted from it. The tungsten filament in light bulbs is a good example. Even if the temperature is not very high, infrared light is constantly emitted when it’s above zero degree Kelvin. Therefore, light and heat coexist and they can be transformed from one to another.

Both are energy in different forms. Light energy is seen by our eyes, light energy liberate electrons from photocell and laser light can melt or burn materials. Shorter wave length ( 400 to 800 nano meter) electromagnetic wave is light.

Heat energy is felt by our skin or touching. It vibrates the atoms in solids and liquids and it increases the random movement of atoms in gasses . It is also an electromagnetic wave of longer wave length ( 1000 to 2000 nanometers).

Heat can be produced by light and light also can be produced by heat. Are they exist at the same time or one is the transform of the other? The answer can be explained with a loop.

Answered Dec 24, 2017 · Author has 51 answers and 58.3k answer views

Heat can transfer from one body to another via three pathways

1. Conduction
2. Convection
3. Radiation

The heat transfer taking place through radiation happens via electromagnetic radiation i.e. light.