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For thousands of years, people had used torch as a light source. But torch is replaced by the electric flashlights. (Omni light was replaced by spot light) omni light is able to light whole space however, spot light can just light a part of space. Nowadays people know torch as Olympic symbol and it is not being used any more. Now we can recreate the ancient product and combine that with spot flashlights to have omni light and spot light together.
amir kabir university