17 Example Of Mechanical To Radiant Energy: Detailed Explanations

In this article, we will discuss the various example of mechanical to kinetic energy conversion with detailed facts.

Here is a list of examples that we are going to discuss in this topic:-

Fire from Stones

Some stones having a composition made up of least valence outer shell of the elements like potassium, sodium, magnesium, etc.; will show the excitation when rubbed with the other stone having the similar type of elements.

Stone Age Caveman;
Image Credit: Pixabay

Due to the excitation of electrons, the spark is generated by rubbing two stones together; hence the mechanical energy is converted into radiant energy due to friction.


You must have seen the spark created when the two swordsmen are battling in the field. The equal and opposite force is imposed on the two swords. The radiant energy is given out when one sword hits another sword due to friction at the sharp edge.

Read more on 14+ Uses Of Mechanical Energy: Detailed Explanations.

Hair Dryers

The energy radiated in the form of heat from the hairdryers is used to dry the hairs.

example of mechanical to radiant energy
Image Credit: Pixabay

It consists of an electric fan with a heating coil that heats the air passing through the coil and gives out warm air. The mechanical energy generated is transferred to radiant energy.

Hammering the Nail

A spark generated between the hammer and the nail must have been observed most of the time if you have tried to hammer the nail continuously.

Image Credit: Pixabay

The mechanical energy is turned into frictional energy giving the heat into radiant energy when the excitation energy of the iron is high.


The motion of the piston up and down produces frictional energy thus generating the heat and raising the temperature of the engine. This heat energy is radiated in the surrounding warming up the engine of a vehicle.

Read more on 10+ Example Of Light To Mechanical Energy: Detailed Explanations.


Welding is the process of joining two metallic parts together at a high temperature.

Welding; Image Credit: Pixabay

For welding, we continuously hit the part until it produces a spark due to the excitation of electrons resulting into fusion. Hence, the mechanical energy we create is converted into radiant energy.

Lighting a Bulb Using Motor

On supplying power to a motor, the mechanical energy produced by the rotations is converted into electric energy which is supplied to a bulb. The light from the bulb is radiated in all directions thus lighting the room.


The generators are used to convert mechanical energy to electric energy. This electricity generated is passed to your home which is then converted into radiant energy upon supplying power to the bulb.

Image Credit: Pixabay

Read more on 10+ Example Of Mechanical To Thermal Energy: Detailed Explanations.

Sharpening Machines

While sharpening the items, the radiant energy is given out in the form of a spark produced due to frictional energy generated by rubbing the edges to the conveyer belt. The continuous rubbing heats the belt, and the heat is radiated in the surrounding.

Sharpening Machine;
Image Credit: Unsplash

Read more on 19+ Example Of Mechanical To Kinetic Energy: Detailed Explanations.


Matchsticks are made up of a phosphorous lid, which on rubbing on the surface the frictional force is applied that causes the matchstick to lit giving the radiant energy.


Lighters come with liquid butane which is highly flammable. On pressing the trigger push button on the lighter, it hits the piezoelectric crystal at the bottom that generates the piezoelectric spark which is passed through the wire.

Lighter; Image Credit: Pixabay

At the same time, the nozzle is pushed up on the other side of the trigger button, allowing the gas to release from the nozzle and lit the gas.

Read more on 16+ Example Of Chemical To Mechanical Energy: Detailed Explanations.


The propellers are attached to the motor that supports them to rotate.

Ceiling Fans;
Image Credit: Pixabay

The motor starts rotating when supplied with the electrical energy which is then converted into mechanical energy. This mechanical energy radiates in the form of wind in the entire room.


The grinders are used to grind the mixture into smaller particles. It has two rollers connected to the shaft that helps to churn the mixture. The friction of the roller on the base of the grinder produces heat that is radiated to the mixture and in the surrounding of a grinder. Hence, the mechanical energy is converted into radiant energy in the form of heat and sound.

LEDs on String Helicopters

The string helicopter runs on the principle of mechanical energy generated by the wheel and the axle. The gear attached to the string rotates at the pulled string is released, and along with it, all the attached gears move producing enough energy that is supplied to the LED to lit radiating the light.

Read more on Is Mechanical Energy Conserved: Why, When And Detailed Facts And FAQs.

Friction of Machines

Machine parts aligned together undergo frictional forces.

Metal Cutting; Image Credit: Pixabay

Due to the friction, the heat energy is generated and is transferred to the surrounding region making air warm.

Read more on Conservation Of Mechanical Energy Examples: Detailed Insight.

Tuning Forks

Tuning forks were used as acoustic resonators to tune the musical instruments in the early days.

Tuning Fork; Image Credit: Pixabay

Upon hammering it produces a musical note. The tone from the two-pronged fork relies upon the frequency produced by it depending on the length of the metallic fork, it produces vibrations that are radiated in the air and the sound is heard.

Turning on Light Switch

As you put on the switch of a light, the mechanical energy comes in role.

Turning on the Light Bulb;
Image Credit: Pixabay

On putting on the switch the radiant energy is radiated from the light bulb. Hence, the mechanical energy is converted into electric energy and then radiant energy.

Frequently Asked Questions

What is radiant energy?

Radiant energy is the energy radiated in the form of a particle or a wave.

The radiant energy could be in any form like thermal, sound, electrical, wind, light, that can propagate in the air, thus called radiant energy.

How does the mechanical energy is converted into radiant energy?

Mechanical energy is the energy acquired by the system while doing some work.

The thermal energy or the frictional energy produced during the work is transformed into radiant energy in the form of a wave or particle.


Hi, I’m Akshita Mapari. I have done M.Sc. in Physics. I have worked on projects like Numerical modeling of winds and waves during cyclone, Physics of toys and mechanized thrill machines in amusement park based on Classical Mechanics. I have pursued a course on Arduino and have accomplished some mini projects on Arduino UNO. I always like to explore new zones in the field of science. I personally believe that learning is more enthusiastic when learnt with creativity. Apart from this, I like to read, travel, strumming on guitar, identifying rocks and strata, photography and playing chess. Connect me on LinkedIn - linkedin.com/in/akshita-mapari-b38a68122

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