Pair swing of bottles. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Pair swing of bottles. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Without pulling the rope, tie it at both ends to hooks located at a distance of 1 m from each other and at the same height from the floor. Tie two bottles to the necks with a rope 1 m long and tie them at the free ends to the upper rope at a distance of 40 cm from each other.

Focus Paired bottle swing

It is very important that these two pendulums are the same length. Announce to the audience that all things obey you, and if you just practice, over time you will learn to command people. The bottles certainly know who owns them. Swing one of the bottles. After a few hesitation, give the command to swing the second bottle - and she will obey you.

When the bottle is at the bottom of its swing, order the first bottle to stop - the bottle will follow your command! When the first bottle stops, order it to start swinging again, and order the second bottle to stop moving. They will obey you this time as well, and both will obey you until they stop rocking altogether.

Focus secret:

The bottles will behave this way without your orders. The rhythm of the first pendulum is transmitted along the rope to the second, which perceives it, since both pendulums have the same free oscillation.

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A group of researchers from Harvard University announced in the latest issue of the journal Nature Materials that they have succeeded in creating an artificial biological tissue with a three-dimensional network of electrical nanowires embedded in it and fully compatible with it.

“The current methods of interacting our devices with living systems are very limited,” says Charles Lieber, one of the lead authors of the article. “We can measure the activity of cells or tissues with electrodes, but such methods damage these tissues. With this new technology, we get the opportunity to do the same most without harming the biological system."

In fact, Harvard scientists have created an intermediate cyborg environment, a kind of nervous system made of biotissue and electronics, which can register its acidity, chemistry, oxygen content and other important characteristics in a biological environment and form a “response” if necessary.

The work began with two-dimensional structures, after which they moved on to 3D structures. On a polymer substrate, scientists grew a network of electrodes capable of measuring the electrical activity of cells using their microtransistors. Then the substrate was dissolved, and the remaining mass was something like a porous sponge. At the next stage, living tissue cells - nerve cells or heart muscle cells - were seeded into this sponge. In the end, scientists learned how to artificially create a biological tissue that has electronics in it, capable of registering electrical signals from cells located deep inside the tissue, and at the same time not damaging them in any way.

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