When mechanical pressure is applied to a specially prepared piezo-electric crystal it generates electro-magnetic energy that can be detected in the form of both light and heat.
An example: the kind of gas-lighter that you "squeeze" contains a piezo-electric crystal. When you squeeze the handle it puts enough mechanical pressure on the crystal to produce the electricity necessary to produce a spark.
Mechanical energy does not come directly from light and heat. Light and heat are forms of energy, but they do not typically convert into mechanical energy. Mechanical energy is typically associated with the motion or position of an object.
Yes, mechanical energy can be converted into electrical energy which can then power light bulbs. This is typically achieved through devices like generators which convert the mechanical energy into electricity that can be used to light up bulbs.
Circuits convert electric potential energy into other forms of energy such as light, heat, or mechanical energy depending on the components within the circuit.
One method which this could happen is you have mechanical energy, lets say you riding a bike, and attach a turbine to it which converts your mechanical energy into electrical energy. You then plug a light bulb into that, and the electric energy is converted into light.
Light is not mechanical energy but it can be transformed into mechanical energy. Light creates an impact as it hits a surface.
Mechanical energy can change to non-mechanical forms through processes like friction or air resistance, which convert kinetic energy into heat energy. Additionally, mechanical energy can be transformed into other forms of energy such as sound or light through various interactions.
You can convert electrical energy into any other kind of energy.You can convert electrical energy into any other kind of energy.You can convert electrical energy into any other kind of energy.You can convert electrical energy into any other kind of energy.
You can convert it to practically any other type of energy.
Lots of devices do that. A motor will convert electrical energy to mechanical energy (i.e., to movement); a lamp will convert it to light; a speaker will turn it to sound; etc.
Electric energy can be changed into other forms of energy by devices such as electric motors, which convert electrical energy into mechanical energy; light bulbs, which convert electrical energy into light and heat energy; and electric heaters, which convert electrical energy into thermal energy.
Here are a few examples: Engines (gasoline, diesel, gas turbine) - Convert chemical energy to mechanical energy. Electric motors - Convert electrical energy to mechanical energy. Wind turbines - Convert the kinetic energy of wind into mechanical energy (which is then commonly turned into electrical energy by a generator hooked to the turbine). A light bulb - Turns electrical energy into light and heat. A wood stove - turns chemical energy into heat (and a bit of light) A roller coaster - converts back-and-forth between potential energy (the cars high on a hill) to kinetic energy (the cars going fast). A solar cell - Turns light into electricity
Examples of conversion of mechanical energy into light energy include a light bulb, which converts electrical energy (generated by a mechanical source like a power plant) into light energy through the heating of a filament, and a hand-crank flashlight, which converts mechanical energy from the hand-crank into light energy through the activation of a dynamo or generator.