The development of mobile lighting tools can be traced back to the early days of human society development - the primitive society. Since the humans learned to drill wood for fire, mobile lighting has experienced a history of development from fire, oil, candles to flashlights. Mobile lighting tools have undergone countless changes, including torches, oil lamps, candles, kerosene lamps to incandescent light bulbs, Xenon bulbs, and LED flashlights. The oil lamp has undergone several improvements. The oil lamp oil was changed from animal oil to vegetable oil and finally replaced by kerosene. In order to prevent the wind from blowing out the fire, people added a cover to the oil lamp. From the early paper cover to the later use of the glass cover, such an oil lamp is not afraid of the wind, and is convenient for outdoor moving lighting.
While using oil lamp lighting, humans are still looking for other mobile lighting methods. Around the 3rd century BC, some people made candles with beeswax. In the 18th century, candles made of paraffin appeared and began mass production by machines. More than 100 years ago, the British invented gas lamps, making human lighting a big step forward. The movable lighting tools such as torches, candles, oil lamps, and gas lamps do not leave the fire, and are illuminated by the light emitted by the material burning. At the end of the 19th century, Edison invented the electric light, and since then has rewritten the history of human lighting, and humans have moved to the era of electric lighting.
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