Sturdy matchbox. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Sturdy matchbox. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

“What will happen to an empty matchbox,” ask the audience, “if you hit it with a fist in a big way?” Almost all of them will say that the box will break. You have a completely different opinion: the boxes will survive.

Focus Strong matchbox

Proceed as follows to prove this. Place both parts of the empty box - one on top of the other. On this structure and offer to hit sharply and abruptly with your fist. What will happen will surprise them: both parts will fly apart.

Focus secret:

The matchbox is very springy, and this saves it: it bends, but does not break.

Author: Kuptsova O.

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Random news from the Archive

Converting hydrogen to metal 06.02.2020

Researchers at the French Commission for Alternative Energy and Atomic Energy (CEA) have been able to shape a hydrogen sample into a form that exhibits the properties of a metal.

The work took many years, as the process itself is incredibly complex. The scientists hermetically sealed the supercooled, solid hydrogen in foil and then subjected it to extremely high pressure using a diamond as an anvil.

In previous experiments, the pressure was limited to 400 gigapascals, but then the researchers came up with the idea to use not a flat, but a toroidal (donut-like) anvil. This allowed it to withstand much higher loads, and at 425 gigapascals, the experiment was finally crowned with success: hydrogen began to show the first metallic properties.

Scientists emphasize that cooling and pressure are two critical factors for changing the state of matter. "As the pressure increases, cooled hydrogen becomes increasingly opaque, and at 425 gigapascals, its surface becomes shiny, highly reflective," they write in their paper.

Hydrogen is one of the most common chemical elements on Earth. It is easy to obtain from water, and therefore the source of potential raw materials for the production of metallic hydrogen or, say, hydrogen fuel is practically inexhaustible. In addition, for its extraction it is not necessary to harm the environment and destroy the ecosystem, as is the case with fossil fuels. In addition, the researchers also have a purely scientific experiment: until now, scientists do not know a place in the Universe where huge pressure is combined with extremely low temperatures, which means that there is either no hydrogen in the metallic form in the world at all, or its source is still hidden from us.

Metallic hydrogen is a potential fuel that will not only radically change the earth's energy, but will also give us a chance to carry out space flights, which so far can only be dreamed of. Now scientists are aiming to get enough metallic hydrogen to carry out some of the necessary tests and experiments. The ultimate goal is, of course, to develop a cheap and relatively simple way to produce this amazing substance on an industrial scale.

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