Of all the sources of light sunlight is the most common so we will discuss the uses of light in life from all the sources uses of light in our life the significance of light kill in 1 food photosynthesis is a concept in biology wherein food is synthesized by use of light light is the sole source of food generation for all living organisms on the earth except for a few chemotrophic . A light bulb is a device that produces light from electricity in addition to lighting a dark space they can be used to show an electronic device is on to direct traffic for heat and many other purposes. 5 ways we use lighting everyday posted by steven jackson on september 24 2015 now that mankind has evolved beyond using torches and candles as a primary means of lighting lighting has found its way in all areas of people activity from street lights to fiber optics light is the sine qua non to human history here are just a few awesome uses . We use light to see things as the sun sends so much light towards our planet weve evolved to make use of those particular wavelengths in order to sense our environment light waves can also be made using a laser this works differently to a light bulb and produces coherent light
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