yes. light bulbs are grown in plantation fields by the hundreds of thousands. after being carefully selected through an ardous process, only the best go on to be sold.
yes
You do not found C.F.L. bulb in nature as such. So it is an artificial or man made source of light. It consumes very less energy. As it does not gives out heat.
Electricity is the source of energy in a light bulb.
That is any source of artificial light (not a naturally occurring light)oil lampsgas lampscampfireselectric lampscandlesetc.
The sun is an example of a natural light source. A source which gives of light that is natural (not made by electricity) is a natural light source.
A primary light source is one that actually produces light, such as a light bulb or the sun. A secondary light source in one that ONLY reflects the light produced by a primary light source. It doesn't produce light itself, such as a mirror or the moon.
The sun is an example of a natural light source. A source which gives of light that is natural (not made by electricity) is a natural light source.
It is a source of light only.
The terms light source and illuminant have precise and different meanings. A light source is a physical emitter of radiation such as a candle, a tungsten bulb, and natural daylight. An illuminant is the specification for a potential light source. All light sources can be specified as an illuminant, but not all illuminants can be physically realized as a light source.
A mirror is not a source of light, natural or otherwise.
Yes. Lighting is natural and it is a source of light.
Yes. Candle is as natural source of light as the sun is.