Gas balloon

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

A gas balloon is a balloon that rises and floats in the air because it is filled with a gas lighter than air (such as helium or hydrogen). When not in flight, it is tethered to prevent it from flying away and is sealed at the bottom to prevent the escape of gas.

Excerpt from the Wikipedia article “Gas balloon”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Tom Schwede, CC BY-SA 3.0 de, via Wikimedia Commons.