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Balloon

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A balloon is a flexible membrane bag designed to be inflated with gas or liquid. These objects are incredibly versatile due to their low density and low cost. They are used for everything from festive party decorations to serious medical treatments.

Congrats bqt
Congrats bqt

While we often think of them as toys, balloons serve critical roles in meteorology, military defense, and transportation. Their ability to hold different substances makes them useful tools in many scientific fields.

The way a balloon works depends on the material and the substance inside. Most party balloons are made of natural latex tapped from rubber trees. The elasticity of this rubber allows the volume to be adjusted easily.

Parada Gay em Sampa
Parada Gay em Sampa

When filled with a light gas like helium, the balloon becomes buoyant and floats. However, helium balloons usually lose their lift within a day or two. This happens because of diffusion, where gas moves from a high concentration inside to a lower concentration outside. Tiny helium atoms escape through small pores in the latex. To stop this, some people apply a special polymer gel inside the balloon to coat the surface and reduce leakage.

There are several distinct types of balloons used today. Standard rubber balloons are highly stretchy and often filled with air or helium. In contrast, foil balloons are made from a metallised film called Mylar, or BoPET. These are thin, unstretchable, and less permeable than latex.

This material allows them to keep helium gas inside for several weeks. Another type is the water balloon, which is a small, thin rubber bag filled with liquid. These are designed to break easily when thrown. There are also solar balloons, which use large surface areas to catch sunlight. The sun heats the air inside, decreasing its density to create lift.

Balloons have a long history of human use. Since prehistory, people have used animal bladders, such as pig bladders, to hold air. In the 18th century, the Montgolfier brothers experimented with hot air balloons. They sent animals aloft in 1782 and humans in 1783. The first hydrogen-filled gas balloons appeared in the 1790s.

Jacques Charles Luftschiff
Jacques Charles Luftschiff

Modern rubber balloons were invented by Michael Faraday in 1824 for his laboratory experiments. By 1825, Thomas Hancock began selling rubber balloons. These early versions arrived as two separate circles of soft rubber. Users had to rub the edges together to seal them.

In the world of art, balloons are used for complex decorations. Artists known as "stackers" build large structures by stacking round balloons. Other artists, called "twisters," use long, thin pencil balloons to create shapes.

Giant Balloon Nutcracker Figures for Rays Game
Giant Balloon Nutcracker Figures for Rays Game

They twist and tie these tubular balloons into sculptures like animals.

Balloonsanimals
Balloonsanimals

Decorators also create arches, columns, and centerpieces for weddings or corporate events. Recently, many decorators have switched to air-filled decorations. This change helps protect the non-renewable supply of helium.

Balloons also play a vital role in modern medicine. In a procedure called angioplasty, doctors insert tiny balloons into blocked blood vessels near the heart. Once in place, the balloon is inflated to clear plaque and stretch the vessel walls. This helps prevent a myocardial infarction, or heart attack.

Slide3Chem
Slide3Chem

Other medical uses include balloon catheters, which use an inflated tip to stay in place inside the body. Balloons can also be used to stop bleeding in internal organs like the stomach by being filled with air or liquid.

Finally, balloons can demonstrate important scientific principles and social uses. A balloon rocket works by expelling gas through an open end. According to Newton's third law of motion, this expulsion propels the balloon forward. Balloons have also been used for publicity and propaganda. In the 1950s, activists used them to carry newspapers over borders. However, releasing balloons can cause environmental harm. Metallised Mylar balloons do not biodegrade and can interfere with power lines. Because of this, many regions have passed laws to ensure balloons are tethered with weights.

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File:Congrats bqt.jpg
Congrats bqt.jpg
File:Giant Balloon Nutcracker Figures for Rays Game.jpg
Giant Balloon Nutcracker Figures for Rays Game.jpg
File:Parada Gay em Sampa.jpg
Parada Gay em Sampa.jpg
File:Dopey Balloon Twisting Table Centerpiece for Rays Draft Room.jpg
Dopey Balloon Twisting Table Centerpiece...
File:Balloonsanimals.jpg
Balloonsanimals.jpg
File:Units of Italy in Prato 3.jpg
Units of Italy in Prato 3.jpg
File:2018 First of May in Helsinki (47782051631).jpg
2018 First of May in Helsinki (47782051631).jpg
File:Luftballong.jpg
Luftballong.jpg
File:Slide3Chem.jpg
Slide3Chem.jpg
File:Foil balloon abandoned in forest.jpg
Foil balloon abandoned in forest.jpg
File:Jacques Charles Luftschiff.jpg
Jacques Charles Luftschiff.jpg
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