The screw will not loosen. Drawing, description

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The screw will not loosen. Tips for the home master

Builder, home master

So that the nut of the connection assembly does not unscrew during the operation of the device, they usually put a second one (lock nut) or put a Grover washer. If this is not at hand or you need to fix a small nut, under which it is difficult to find a similar washer, an impromptu one made of ... sandpaper will help out.

Cut out two circles and glue them with non-abrasive sides. It remains to make a hole - and the washer is ready.

Screw will not loosen

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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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New camouflage material against thermal cameras 13.07.2018

In the science fiction film "Predator" the hero of Arnold Schwarzenegger was hiding from the "thermal vision" of the alien, smeared with a layer of wet and cold mud. But if he had used a new "thermal camouflage" material developed by a group of scientists from the University of Manchester, then Arnold Schwarzenegger would have been much easier and more effective in hiding from a predator.

The new thin, flexible and lightweight material consists of three even thinner layers. The top layer is several sub-layers of graphene, a form of carbon whose crystal is one atom thick. The bottom layer is made of fire-resistant nylon coated with a layer of gold. The two layers are electrodes separated by a membrane impregnated with ionic liquid, an aqueous solution of several types of salts that contains both positively charged and negatively charged ions.

When a small electric current is passed through this material in a certain direction, ions begin to move from the membrane towards the graphene electrode. In a few seconds, the concentration of ions increases so much that the amount of infrared radiation from the graphene surface is drastically reduced. And since almost all night cameras register exactly infrared light, this method of blocking this radiation will make an object hidden under a layer of camouflage material invisible to cameras.

It should be noted that during previous attempts to create thermal camouflage, researchers encountered a large number of insurmountable problems, such as the hardness and fragility of the materials used, poor adaptability to environmental changes and low reaction speed. As you can see, in the case of the new material, most of these problems have been successfully solved, and the high reaction rate of the new material will allow the camouflage system to instantly adapt to changes in external temperature, which will allow the object to be plucked not to stand out from other environmental objects.

“We have implemented a completely new principle for electrically controlling the amount of infrared light emitted,” the researchers wrote. “In addition to adaptive thermal camouflage systems, this technology can be used in many other areas, ranging from adaptive infrared optics to space technology.”

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