Opening a map with a mirror. Effective trick and its solution

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Opening a map with a mirror. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

Is it possible to open a map using a mirror?

Focus secret:

Take a place at one side of the room opposite a wall mirror of sufficient size.

Let the audience stand or sit opposite you, as they wish, with their backs to the mirror. Let me shuffle and remove the cards. Take the top card and hold it high, with its end facing you and facing the spectators.

Since it is reflected in the mirror opposite you, it is not difficult for you to name it or other cards in the same way.

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Random news from the Archive

A new method for quantum entanglement of photons 28.08.2022

Physicists at the Max Planck Institute have developed a new method for quantum photon entanglement and demonstrated it by entangling a record number of light particles. This method can become a technological solution for creating quantum computers, writes Alternative Science.

Quantum entanglement is a phenomenon that seems impossible to the everyday observer. In fact, the particles can be so intertwined with each other that they can no longer be described separately, and a change in photons and their properties instantly causes a response from the "partners", no matter how far apart they may be. The consequences of such a phenomenon worried even Einstein, who called it "spooky action at a distance."

As counterintuitive as it may sound, quantum entanglement has been experimentally demonstrated for decades. This phenomenon even underlies new commercial technologies such as quantum computers, where entangled particles can be used as quantum bits (qubits) that store and process information.

For the best performance, you need to create large groups of particles and entangle them together, but this is not easy to do. So in a new study, scientists at the Max Planck Institute took a more robust method of quantum entanglement and used it to successfully entangle 14 photons, the largest group of photons currently.

The team started with a single rubidium atom trapped in an optical trap that reflects electromagnetic waves in a specific pattern.

An atom is irradiated with a laser at a certain frequency, predetermining its necessary properties. Then another control pulse is sent to it, causing the atom to emit a photon entangled with the atom.

This process is repeated, with the rubidium atom rotating between the emission of each photon, until a chain of photons entangled with each other is obtained. An efficient process that produces one photon for every two laser pulses. Efficiency - 43%.

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