The radiant energy is transmitted in the form of an electromagnetic wave that could be a light, sound, transverse wave, etc.; resulting in the warming of the system called thermal energy.
Here is a list of example of radiant energy to thermal energy that we are going to discuss in this article:-
The sunlight is a primary example of radiant energy. The photons of light incident on the surface trap in the system depending upon the emissivity, composition, and dimension of the system.
If the intensity of the sunlight is more, then the temperature of the system increases producing thermal energy.
Solar cooking is the best way to save electricity and gas.
The solar cooker has a black colour outlet because the sunlight incident on the cooker is completely absorbed by the outlet thus providing heat to cook the food kept in the solar cooker.
The fire below the vessel provides the radiant energy which is converted into thermal energy thus boiling the liquid in the vessel.
Rock Surfaces During Summer
When the intensity of the light is more and radiations incident on the surface of the rock is high, the temperature of the surface of the rock and near region become very high. The sunlight is accompanied by the radiant energies photons is converted into thermal energy thus raising the temperature of the rock. This energy is further radiated in the surrounding, hence feeling warm near the rocky areas.
The mobile phone emits radiation in the range of a radio wave while in use. This emission of electromagnetic waves results in thermal radiation causing the devices to heat up. You must have noticed that your mobile screen gets hot on overusing. This is also because the Smartphone carries many electronics and sensors inbuilt.
Many electronic devices get warmer when used over the long. The energy generated inside the devices is given out in the form of thermal energy thus heating the devices. The energy is due to the vibrational energy produced on the collision of electrons in the electric field inside the device which is radiated in the form of thermal energy.
Sitting near the campfire, you feel warm being around. This is because the heat energy is radiated in the form of thermal energy that heats up the surrounding air passing by it.
If you go closer to the fire, your skin will feel hotter as you receive more intensity of radiated energy. The intensity of the radiant energy decreases with distance. If the intensity is more, the thermal energy will be more.
The light from the candle is radiated all around the room. The blaze of the candle is less but it warms the surrounding air, thus converting radiant energy to thermal energy.
Read more on Intensity Of Radiation Equation: Exhaustive Insights.
Torch radiates light energy. If you place your hand on the glass of a torch you will feel the surface of the glass has turned a little warmer. This is because; the photon incident on the surface of the glass heats the glass converting a part of light energy to thermal energy.
The water evaporates in the form of a vapour carrying the energy received from the incident sunlight on the surface of the water. The evaporation brings the equilibrium in the atmosphere in the surrounding region.
The food in the oven is cooked as the radiant energy is converted to thermal energy.
The microwaves are produced in the oven by application of the external magnetic field. These microwaves result in the generation of heat thus cooking food items.
Nuclear fission is the formation of two daughter nuclei when bombarded with some external source of energy. On nuclear fission, a lot of the energy is radiated which is converted into thermal energy heating the surrounding area.
The light radiated from the bulb is emitted in all the directions on refracting from the glass of the bulb having a different refracting index. Due to that, the glass gets warmer converting the radiant energy to thermal energy.
Laser is a light amplified by stimulating the radiation of emission. The beam of the laser emits photons of high intensity and frequency.
The vibrational motion of the photon results in the immense amount of energy that is given out in the form of heat. Thus, the radiant energy is transformed into thermal energy.
The vibrational motion of the particles due to external perturbation also results in heat energy, thus transforming into thermal energy.
Frequently Asked Questions
What is thermal energy?
The word thermal defines the temperature.
The energy produced due to the rise of temperature producing heat in the system is called thermal energy.
How radiant energy is transformed into thermal energy?
Radiant energy is the energy radiated in some form of energy.
The energy radiated warming up the surroundings due to the heat energy produced, thus converting into thermal energy. The intensity of the energy radiated must be high enough.