õhupallidel

Õhupallidel, often referred to as balloons in English, are flexible bags that can be inflated with a gas, such as helium, hydrogen, air, or water. The term "õhupallidel" specifically refers to the plural form of the Estonian word "õhupall."

Balloons have a long history, with early versions made from animal bladders used for various purposes. Modern balloons are typically made from rubber, latex, nylon fabric, or polychloroprene. They are widely used for decorative purposes at parties and celebrations, as well as for scientific experiments, meteorological observations, and even in some forms of advertising.

The buoyancy of balloons filled with lighter-than-air gases like helium allows them to float, making them popular for aerial displays and toy purposes. When inflated with air, they do not float but serve as playful objects. Water balloons, on the other hand, are designed to be filled with water and thrown, typically for recreational games. The materials and construction of balloons vary depending on their intended use, with some designed for short-term enjoyment and others for more durable applications.