Whoever ends up loses. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Whoever ends up loses. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

There are 15 balls strung on the rope, which can easily move to one or the other end.

Invite those who want to play with you. Each of you in turn must move one, two or three balls from left to right. Whoever finishes is the loser! Hold the left end of the rope yourself, and the right end - the spectator. Let him start the game. No matter how many balls - 1, 2 or 3 - the spectator moves, he will eventually lose. And not only him, but each of the others.

Focus Whoever finishes loses

Focus secret:

To win this game you need to move enough balls until you end up with either the 6th or 10th ball on the right. (In the figure, these balls are specially highlighted in a different color.)

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Random news from the Archive

Stanen is a competitor of graphene 29.11.2013

A two-dimensional layer of tin (stanene) can show an even higher level of charge mobility, and these properties appear at room temperature. Details with reference to an article in Physical Review Letters are given by the Stanford National Accelerator Laboratory.

Scientists from Stanford University, together with colleagues from Germany (Max Planck Institute for Solid State Physical Chemistry) and China (Tsinghua University), performed Ab initio calculations. This is a special class of calculations in which the results are obtained by calculations (usually quite complex and cumbersome) directly from the principles of quantum mechanics.

Simulation of a two-dimensional layer of tin atoms made it possible to establish that the spin Hall effect should be observed in such a material and, in addition, flat tin should be a topological insulator. The combination of these properties makes stanen, as scientists called the theoretically predicted form of tin, a promising material for use in microelectronics.

Topological insulators are materials that conduct current only in a thin near-surface layer. This phenomenon is fundamentally different from the skin effect (alternating current flows mainly near the surface of the conductor) and can be observed in insulators. In the case of flat tin, physicists say that the current through the stanen film will only pass along its edges.

Stanen, according to the scientists who predicted it, can be used to create microelectronic devices. In particular, the high mobility of charges will reduce the power consumption of microcircuits, and the quantum spin Hall effect can be applied in spintronics: computing systems that operate not only with charge, but also with spin currents.

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