1. What is the development of stage lighting?

Early dramas had a history of open-air or semi-open-air performances, all of which took sunlight as the light source.

However, as the performance venue moved into the room or performed at night, stage lighting began to appear. According to written records, after 1112, the Capital of Song Dynasty in China performed "Hundred Dramas" every Lantern Festival. The stands were built into a stage with square wooden bases downstairs, and a light ball was hung on the battlements on both sides of the stage, which was full of candles. This was the beginning of artificial light sources in China.

In the 6th century, if Europe performed outdoors at night, it used rope impregnated with resin to make a lantern as the light source. During the 15~16 century, Italian scenery designers conducted experiments on colored lighting.

At the beginning of the 7th century, Italians made various experiments to control the dimming of lights in performances. And French classical performances have also tried to show the time change of day and night.

Since the 8th century, it has become a common practice to turn off the auditorium lights and leave only the stage lights during performances. In 1755, when the Dresden Theatre performed the opera "Yeao", as many as 8,111 candles were lit on the stage.

since the 9th century, light sources have changed rapidly. In 1818, the Lanxin Theatre in London first used gas lamps.

Because gas lamps can be controlled by pipelines in a unified way, and can be changed in light and shade, they can be popularized.