Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


TOURIST ADVICE
Free library / Directory / Tourist tips

Untying self-tightening knot. Travel Tips

Tourist tips

Directory / Tourist tips

Comments on the article Comments on the article

Untie self-tightening knot very convenient.

If you skip the running end folded in a loop into the loop of this knot, then the knot will still retain its main property, but if desired, it can be quickly untied. To do this, you just need to pull the running end.


Rice. 98. Untying self-tightening knot

Author: Skryagin L.N.

 We recommend interesting articles Section Tourist tips:

▪ The composition of the first aid kit

▪ Port node

▪ Shoulder straps for a backpack

See other articles Section Tourist tips.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

The threat of space debris to the Earth's magnetic field 01.05.2024

More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Random news from the Archive

Gadget for invigorating the brain during the day 28.06.2021

Specialists from the US Air Force Research Laboratory have developed a device that helps relieve fatigue and maintain performance throughout the day. The VNS technique is based on stimulation of the cervical vagus nerve with electric current.

This method is much more effective than transcranial direct current stimulation (tDCS). Both methods target the locus coeruleus, an area in the brainstem that is the main source of norepinephrine, the wake-up hormone. In this case, tDCS signals must pass through the skin, skull, and the rest of the brain in order to reach the final region.

The duration of the procedure is about 30 minutes. In the case of VNS therapy, exposure is carried out using a portable device. At the same time, a person can independently control the device, and the procedure takes only six minutes.

40 people took part in the tests of the device. Participants were awake for 34 hours. The condition of the volunteers was assessed using four tests. It turned out that participants in VNS therapy showed the best results 12 and 15 hours after stimulation. And while the results need to be confirmed by more research, experts are confident that this method can be a good way to stay alert and productive for a long time.

Other interesting news:

▪ SGA power adapters up to 60W

▪ Space flights are bad for the liver

▪ The brain is able to remember foreign words in a dream

▪ New real-time spectrum analyzers

▪ Exploration of french fries in outer space

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Firmware. Article selection

▪ article Horses are not changed at the crossing. Popular expression

▪ article Where is the longest sea route that can be sailed without changing direction? Detailed answer

▪ Refrigerator driver article. Job description

▪ article Generator Meow. Encyclopedia of radio electronics and electrical engineering

▪ article Charging-desulfating machine for car batteries. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024