Potatoes to fight scale. Drawing, description

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Potatoes to fight scale. Tips for the home master

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Salts dissolved in water settle on the walls of the boiling containers in the form of indelible scale, which is difficult even to mechanically clean.

However, the scale is well softened and then removed if potato peelings are placed in this container: after boiling, the settled salts are easily peeled off with a wooden spatula.

Potatoes to combat scale

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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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