How high can an inflatable helium balloon rise?

Almost any holiday is not complete without a large number of colored helium balloons. Often at celebrations, children release balloons and watch them fly into the sky.

The balloon is an invention of the British physicist Michael Faraday,

Modern balloons are made from latex. The filler is helium, the safest of all light gases. It is inert and therefore cannot explode like hydrogen.

Under favorable conditions, an ordinary baby ball can float in the air for up to two weeks. A ball treated from the inside with a sealant lasts twice as long. The fact is that helium atoms seep out through the shell, so the product is inevitably blown off.

With increasing altitude, the air becomes more rarefied, and the volume of the ball must increase to compensate for the pressure. At an altitude of 9 km, the air pressure decreases threefold, respectively, the volume of the ball should increase threefold.

At an altitude of 12 km, the air pressure decreases 4 times, and at an altitude of 50 km — more than 1200 times! Thus, the upper flight limit will depend on the strength of the product and the degree of its filling.

Since latex cannot stretch indefinitely, the balloon bursts. With a high probability

According to the experiments of American children who launched balloons with altimeters inside,

You can also try to launch balloons together with a passenger: in 2004, Vitaly Kulikov pumped up 360 balloons with hydrogen and soared 400 meters into the sky. For 25 minutes of flight, the wind

Less lucky