helium balloons

Helium balloons are inflated with helium gas, which is lighter than the surrounding air. Because helium is less dense, the balloon experiences an upward force called buoyancy, making it float. The balloon's material typically allows helium to escape slowly over time, so they eventually deflate. Helium is a non-toxic, inert gas, making it safe for use in balloons. These balloons are popular for celebrations, as their floating effect adds a festive touch. The science behind them is based on differences in gas densities and the principles of buoyancy described by Archimedes' principle.