Hydrogen used to be used in airships.
Hydrogen was once used to fill airships. Quite dangerous due to how flammable it is.
Hydrogen was the gas that was once used to filled airships. It is extremely plentiful and easy to produce. However, it is also extremely flammable and caused a few accidents. Helium is now used.
gas is still used in airships to provide lift.
hydrogen is VERY flammable, which makes it an unpleasant choice.
because hydrogen used to be in those airships and since hydrogen is flammable it was very dangerous
Today's blimps are not filled with flammable hydrogen gas like Hindenburg was, but normally the non-flammable helium.
Hydrogen isn't used for airships because it is highly flammable. It was one of the causes of the Hindenburg's burning.
Airships were often used to carry freight and passengers. But became unpopular after the advent of jets and other types of aircraft because they are slow. Initially they used fuel which made them highly flammable when accidents occured.
The only answer that comes to mind is "Airships". Hydrogen, the lightest element, was used in airships, where excess weight was undesirable. However, accidents like the Hindenburg disaster showed that Hydrogen gas was too dangerous(it is extremely flammable) to be used. Since then, Helium has been used instead. Helium is also a very light element, and is completely safe, as it is inert.
Airships do use gas, to provide lift.
Hydrogen was used for balloons and airships(zeplins) because it is the lightest gas, but highly flammable, so now we use helium because it is very safe. Hope this helped xxx
In their early history, buoyant airships (zepellins, blimps) were filled with hydrogen, a highly flammable gas. Since the Hindenburg disaster, hydrogen has been supplanted by helium, a much more expensive material, but one that is inert and hence much safer.