Stratosphere around at midlatitudes, and at about at the poles. Temperatures range from an average of near the tropopause to an average of near the mesosphere. Stratospheric temperatures also vary within the stratosphere as the seasons change, reaching particularly low temperatures in the polar night (winter). Winds in the stratosphere can far exceed those in the troposphere, reaching near in the Southern polar vortex. The mechanism describing the formation of the ozone layer was described by British mathematician Sydney Chapman in 1930. Molecular oxygen absorbs high energy sunlight in the UV-C region, at wavelengths shorter than about 240 nm. Radicals produced
The Mask of the Sun simple animations. "Softline" in 1983 noted the "innovative" animation and "excellent, detailed" graphics, and called the puzzles "very good". The magazine concluding that ""The Mask of the Sun" is a very good graphics adventure for the average to good adventurer". "Ahoy!" in 1984 liked "Mask of the Sun"s graphics and vocabulary but noted long load times and low level of difficulty, stating that even novice adventurers would be able to finish the game "within a couple of weeks". "Antic" called "Mask of the Sun"s graphics "absolutely superb" and the gameplay as "excellent". A sequel to The Mask of the Sun