Lamp Light
What form is the light energy from the light bulb before it changed to light?
Very likely somwhere near you light is on. Remember that energy can be creatd or destroyed but only transformed from one form to another. What form is the light energy from the light bulb before it changed to light? Where did it come from? Trace the steps of the transformation of energy as far as you can. What happens to the energy of the light after it shines on you?
If we speak of a typical light bulb (not compact fluorescent) of the filament in the bulb produces light because of the resistance Electric filament. The electrical resistance causes the filament to heat up to a very high temperature at which the filament produces a radiation black body which leads to white light you see. As you said, energy is neither created nor destroyed. Therefore, the energy of light coming from the electric power supplied to your home. So where does electricity come from? There is a number of different methods of power generation, but simply the problem, say that your power comes from a Central coal. The electrical energy from a coal power plant from the release of chemical energy stored in coal. The chemical energy in coal comes from plants that energy absorbed by the sun and converted into coal over thousands of years. The sun's energy comes from nuclear fusion reactions. Therefore, we can say that the energy supplied by your bulb really came of energy released by the sun thousands of years. Once the light bulb is released, it radiates Area. The neighborhood eventually absorb the light that is reflected by a small increase in temperature of the environment. In addition, near the light bulb, much energy from power is released as heat instead of light - that is why the bulbs are not very effective - they produce much heat and little light.
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