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Word Count: 2,250
Have you wondered why streetlights are yellow or why the year 2000 cars have brighter headlights and they are a different color Have you ever wondered how the indiglo light on your watch works or why it glows green and not white And did you know that same indiglo light can be used while frozen dipped in water bent in half stepped on or in hazardous environments Lighting has changed over the last few years there are advantages and disadvantages of different kinds of lighting Lighting has been around since time itself existed the first kind of lighting was fire Fire was used to warm the inhabitants and to provide light many primitive cultures would use burning torches to provide light for their excursions and pathways Fire was the only true form of light they had other than the moon Fire had many disadvantages one was that fire depended on fuel and needed proper conditions to operate no rain minimal wind Another disadvantage is that fire if not handled properly could result in a brush fire or even burn down their shelter An advantage was it was efficient when conditions were correct It provided an inexpensive form of lighting and could be used for cooking and heating Due to the persistent problem of limited fuel inhabitants looked for a way to prolong the fuel Thwig 29-34 The next step in lighting that followed was a candle Candles offered one main advantage over the fire by itself fuel A candle was able to provide a long burning light and was relatively inexpensive to produce Candles were originally made from whale fat The flame would burn and would slowly use the wick as a fuel and would burn much slower because the wax slowed the burning down Thwig 35-49 The next form of lighting that followed the candle was the oil lamp The oil for the lamps was also made from whales The oil was the
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