pollution
ZION JOSEPH
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Blimps can be used in scientific studies of the air to collect atmospheric data such as temperature, humidity, pressure, and air pollution levels at different altitudes. They can also be equipped with specialized sensors to study air composition, wind patterns, and weather patterns in a cost-effective and environmentally friendly manner. Additionally, blimps can provide a stable platform for researchers to conduct experiments or observations in the lower atmosphere.
Because hot air rises. And I assume because burning fuel to create the hot air is easier, perhaps a lot lighter as well, and definitely cheaper than constantly buying helium. Although blimps used that method.
Air - a mixture of nitrogen, oxygen, carbon dioxide and other gases. When heated, air becomes less dense and so it will float in cooler (= more dense) air, giving the balloon its lift.Airships and blimps are different to hot air balloons in that they gain lift from an envelope (the balloon) filled with a gas that is lighter than air. In the past, this was hydrogen but use of this gas was stopped due to its extremely flammable nature and helium is now used instead.Used gasses in balloons: helium, hot air, hydrogen.
Hot air balloons rise because the air inside the balloon is heated, causing it to become less dense than the surrounding cooler air. This lower density air creates buoyancy, lifting the balloon upwards. The balloon will continue to rise until it reaches a point where the surrounding air is the same temperature, at which point it will remain at a steady altitude.
A blimp is a powered, steerable airship filled with helium or hot air, while a hot air balloon is unpowered and relies on hot air for lift. Blimps have an enclosed gondola for passengers and are more maneuverable, while hot air balloons have an open basket and drift with the wind. Additionally, blimps are typically larger and used for advertising or surveillance, while hot air balloons are used for recreational purposes.