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Dancing glass on a rope. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

In your hands you have an ordinary rope. There is a glass on top of it. If you swing the rope slightly, then the glass will swing from side to side, while maintaining balance.

Focus Dancing glass on a rope

Focus secret:

The glass stands on a rope with the help of a spoon, which is connected to the costume with a thin fishing line. The glass must be installed in the center of the stretched rope. The line will not let him fall.

Author: V.Postolaty

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Random news from the Archive

flight of spiders 17.03.2022

Never given wings by nature, many species of spiders have instead developed an uncanny ability to take to the skies using a few short strands of web projected from the back of their torso. How do they do it?

To fly, spiders can use electric fields. This mechanism seems fantastic, but scientists have confirmed its possibility in theory.

Exactly how this method of invertebrate flight works has never been completely clear, although historically biologists have speculated that it probably has something to do with eddies of warming air near the Earth's surface.

However, there is an alternative explanation for this phenomenon, which is gaining more attention as the evidence to support it accumulates. Instead of flying on air currents, spiders could take off into the sky on electric fields.

Research conducted by scientists from the University of Bristol has shown that the electric fields generated by weather events are strong enough to lift a single electrostatically charged strand of a web and a spider hanging from it off the ground.

Scientists have created a mathematical model that describes the electromagnetic interactions around several hanging threads of the web. This brought new important details to the discussion. The model does not mean at all that electric charges are necessarily responsible for the phenomenon of spider flight. But the work does answer a lot of questions about how physical laws work in nature.

The fact that spiders can increase their web charge slightly to trap prey (and potentially collect pollutants) has been the focus of experimental research for some time now. But in an experiment, it is almost impossible to measure the charge of a thread with the help of modern technologies, so in the study, scientists limited themselves to a mathematical model. It is possible that in the future they will be able to prove it in practice.

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