Fluorescent bulb- Consists of a glass tube in which gas like argon is kept, coated along the inside of the glass is phosphor powder. When electricity comes into contact with the electrode (input point) it excites the electrons which go to the other side of the tube and changes the mercury from liquid to gas. The electrons and charged atoms collide and eventually form UV light which is transformed into visible light via the phosphor coating.
Natural Lighting- Natural light from the sun shining through windows and doors to create a lighting that fills the room.
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