because hydrogen is flammable and can catch on fire!!! and you don't want a airship that is on fire!!
Not as flammable but more expensive and less lift-search "Hindenburg"
Hydrogen gas can explode under the right conditions.
Hydrogen is very susceptible for an explosion by the reaction with oxygen at high temperature.
Hot air balloons use hot air. They have a burner to heat the air. Hydrogen balloons were too dangerous because hydrogen is highly flammable, even static electricity could cause an explosion. Helium is safer because helium is not flammable.
Helium is a gas used to inflate lighter than air balloons.
Helium is used in blimps and balloons. It is the second lightest element to hydrogen, which is not used because it is highly flammable.
helium or oxygen depending on what you put in them
They are filled by Hydrogen gas.
Generally, it is helium. Hydrogen could work, but that would be dangerous.
Helium is an inert light gas where as hydrogen is an explosive gas andto dangerous to use.Hope this answers your question.
Hot air balloons use hot air. They have a burner to heat the air. Hydrogen balloons were too dangerous because hydrogen is highly flammable, even static electricity could cause an explosion. Helium is safer because helium is not flammable.
Although you can, it can be extremely dangerous, so certainly is not recommended.. In some jurisdictions, it can be illegal, depending upon how it is being used.
Hot air balloons use hot air. They have a burner to heat the air. Hydrogen balloons were too dangerous because hydrogen is highly flammable, even static electricity could cause an explosion. Helium is safer because helium is not flammable.
Hydrogen is too flammable
Hydrogen.
Hydrogen is used in weather balloons because they are very light which help the balloon to float or fly easily.
Helium is the gas usually used now. Hydrogen works, but is inflammable and so dangerous. There are also hot air balloons which require a heater to create the hot air and keep it hot.
Balloons are dangerous for babies because of suffocation deaths than any other children's product or toy.
Helium is a gas used to inflate lighter than air balloons.
hydrogen gas