👉 A stenosphere is a type of air bubble, which is defined as a spherical object that is less than 1/4 inch in diameter. These bubbles are often found in the upper atmosphere and have no visible appearance to the naked eye. The term "stenosphere" has been used in various contexts, such as describing the size of the smallest particles that can be detected by the human eye or measuring the distance between two objects when they are separated by a small amount of air. St
