Blow the soup foam it never fails to delight the inner child, perhaps because the hives are round, exploding within minutes. Now, French scientists have been able to create “everlasting legs” from plastic particles, glycerol, and water. new paper published in journals Fluid Physical Comments. The longest voyage he made lasted for 465 days.
Bubes have always been of interest to astronomers. For example, French scientists in 2016 it was possible a machine-specific model of how soap bubbles are formed when air jets hit a soap film. The researchers found that foam formed at a certain speed, which depends on the size of the air jet.
In 2018, we explained about how mathematicians at New York University’s Applied Math Lab revolutionized the way foaming at the moment based on experiments with thin, soap-based films. Mathematicians say that it is best to use a rotating stick that is 3.8 inches wide and strikes at a rate of 2.7 inches per second (6.9 cm / s). Strive too fast and the bubble will explode. If you use a smaller or larger staff, the same will happen.
And in 2020, astronomers were convinced that the most important factor in the production of large bubbles is the adhesion of polymers of varying lengths of cable. This makes the soap film effective stretching sufficiently thin making a big bubble without breaking. The polymer strands are woven, like a ball of hair, to form long strands that do not want to break. When blended well, the polymer allows the soap film to reach a ‘sweet spot’ that looks smooth and stretchy – not stretching too much until it cracks. Varying the length of the polymer strings led to the formation of a strong soap film.
Scientists are also interested in prolonging the long life of foam. Water-repellent parasites: a large amount of air that is trapped in the thin layer of fluid that separates any foam from its neighbors. Bubbles adopt their geometry due to surface vibrations, a force that results from the attraction of cells. Above ground, a lot of energy is needed to maintain the given shape, which is why hives need to take shape with very little space: part.
However, most of the foam explodes within minutes in a steady atmosphere. Over time, the force of gravity gradually drains the water down, and at the same time, the liquid phase evaporates slowly. As the amount of water decreases, the “walls” of the foam become smaller, and the smaller particles of foam combine to form larger. The combination of these two effects is called “coarsening.” Adding another type of surfactant causes the surface cracking to be less destructive by strengthening the water-repellent film walls. But in the end inevitably it happens all the time.
In 2017, French scientists found that a round shell made of tiny plastic particles can hold a small amount of air. Astronomers have called these objects “gas bubbles.” The material is in tune with the so-called liquid gravel — water droplets coated with tiny, water-repellent beads, which roll on a solid non-slip surface. Although gemstone machines have been used in several studies, no one has attempted to study the longevity of marbles.
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