What are the commonly used trees for Christmas trees? Conifers are the collective names of Pinaceae, Taxodiaceae, Cupressaceae and Araucariaceae in the class Coniferae of gymnosperms. Among them, most of the trees of the Cupressaceae family do not present a triangular tower shape. So it is rarely used as a Christmas tree. At the same…
How does Christmas time change? Traditionally, the Christmas tree will not stand up for decoration until Christmas Eve (December 24). Then move away after 12 nights (January 6th). Both early and late this date are considered unlucky. But the modern Christmas shopping season requires most shops to erect their Christmas trees at the end of…
How did the Christmas tree evolve? Christmas tree refers to an evergreen tree decorated with fir trees or pine trees with lights, candles and ornaments. As one of the important elements of Christmas, the modern Christmas tree originated in Germany and gradually became popular worldwide, becoming one of the most famous traditions in Christmas celebrations.…
The solar light string is charged by solar energy. Put the light string controller in a sunny place. And turn the switch to (ON 1) or (ON 2), whichever is selected. When the solar panel senses a certain light, The light string is automatically turned off. When the light is reduced to a certain level,…
Comparison of solar lamps and utility lamps Installation of utility lamps is complicated. There are complicated operating procedures in the utility lamps project. The cable must be laid first. A large number of foundation works such as excavation of cable trenches, laying of concealed pipes, threading in the pipes, and backfilling will be carried out…
Where does the energy of solar lights come from? Solar energy generally refers to the radiant energy of sunlight, which is generally used to generate electricity in modern times. Since the formation of the earth, organisms have survived mainly by the heat and light provided by the sun. Since ancient times, humans have also known…
What are the uses of solar lights? Solar lawn lamp, the light source power is 0.1~1W. Generally, small-particle light-emitting diodes (LED) are used as the main light source. The power of the solar panel is 0.5~3W, and two batteries such as 1.2V nickel battery can be used. Solar landscape lights are used in squares, parks,…
What are the classifications of solar lights Household lighting. Compared with ordinary LED lights, solar lights have built-in lithium batteries or lead-acid batteries. Connect one or more solar panels to charge it. Generally, the charging time is about 8 hours, and the use time is as long as 8-24 hours. Generally with charging or remote…
What are the advantages of LED? LED is also called light-emitting diode. They use solid semiconductor chips as luminescent materials, when a forward voltage is applied to both ends. The carriers in the semiconductor recombine. Excessive energy is released to cause the emission of photons to produce visible light. LED advantages High efficiency and energy…
What are the research directions of solar lights Solar power is not expensive. If the country is decisive, it will introduce an industrial policy that encourages the development of green energy. With the advancement of technology, the cost of solar power generation will be further reduced. “These words aroused the reporter’s curiosity. The reporter interviewed…
