1. The Antarctic continent is covered with snow all the year round, and the ability of snow to reflect sunlight is very strong, especially for newly fallen snow, the reflectivity of its snow surface can reach 95%.
 2. Usually, the snow surface scatters sunlight into people's eyes, rather than directly reflecting sunlight into the eyes.
 3. However, where the snow surface is slightly depressed, "white light" may appear, because the reflected sunlight here is more concentrated and intense, which is called polar white light.
 4. In 1958, when a helicopter flew over the Ellsworth base in Antarctica, a strong white light flashed in front of the pilot's eyes. His eyes immediately became blind, and the plane crashed due to loss of control.
 5. Many brave explorers also encountered this "white light" in the Antarctic and died in the Antarctic.
 The introduction of polar white light in this article is over, and I hope it will be helpful to everyone.