greatest invention of all time
...t bulb the only source of light we had was candles. The candle is the oldest means of supplying light dating back to as early as 3000 BC. Today, however, candles are used for decorative pieces or to add a romantic feel to the room. Also candles don’t supply nearly as much light as the light bulb. Another reason the light bulb is the greatest invention of all time is how inexpensive and longlasting they are. Earliest light bulbs lasted only 13 1/2 hours, some of todays light bulbs can last up to 60,000 hours. The cost of a light bulb is very minimal. An average light bulb costs very little, usually under a dollar, therefore being one of the most economical inventions of all time ...