For example, the growth of plants requires light and heat, and the drying of clothes requires sunlight. The fossil fuels such as coal and petroleum that are widely used in industry are converted from solar energy and are called "stored solar energy." There are also solar cookers, solar water heaters, solar dryers, solar houses, solar power, and solar cells. In addition to the solar energy directly used, the water and wind energy on the earth also comes from the sun. Lhasa, the capital of Tibet, has another name: "Sunshine City". Why is it called this name? Because the Tibet Autonomous Region is located on the Qinghai-Tibet Plateau, the terrain is high, the distance of sunlight to the surface is short, the air is thin, the cloud is less in the sky, and the loss is less, so the solar radiation is strong and the sunshine time is long, called "Sunlight City".
Chongqing, a municipality directly under the Central Government, is called as China's "Fog City". Why is this place foggy all year? This place has a low altitude. Due to the terrain, the Sichuan Basin makes it difficult for water vapor to accumulate and increase water vapor, and the southwest monsoon cannot cross the Qinling Mountains; it can only affect the Sichuan Basin, so it brings a lot of water vapor and is closer to the sea, so There are many rainy days in a year, and the sky is often overcast with clouds, so there is little light and the solar radiation energy is poor. Therefore, people often use "shu dog barking day" to describe the climate characteristics of the Sichuan Basin.
