The headphone cord in the pocket is always entangled, why

Recently, with the improvement of people's living standards, music has become an indispensable part of our lives. When you feel sad, listening to music can ease your mood, but one thing that bothers us is very much - the headphone cord is always entangled. I also often encounter this situation, then what is the reason for this result? So I took a search for my heart and searched the Internet.

This problem can be explained from a structural point of view. The headphone cable is a wire wrapped with thermoplastic elastomer, which is extremely misaligned in length and width, which makes it extremely easy to bend. At the same time, unlike the notebook power cord, the headphone cable is also prone to twist around the center axis. This causes the headphone cord to be structurally unstable for at least three dimensions. Moreover, the front end of the earphone must also be forked into two strands to wrap around our neck. It can be roughly assumed that each shape change of the headphone cord involves a change of a 9-dimensional vector, which is very complicated. This is the same principle as "water flowing down." Once there is a gap in the pool at the height, it is an unstable state and must be transferred to a stable state. By the same token, after the headphone cord is unpacked in the pocket, it sways continuously with the body shaking, and is also subjected to the pressing force and friction of the fabric on both sides. In a complicated mechanical environment, it must "self" Push to "some hidden state" to overcome the "disturbance" of various external forces. Winding can greatly increase the stability of the structure without changing the material properties. The tighter the winding, the higher the strength is usually, ensuring that the structure is stable.

But how can we make the headphone cable honestly not knotted? I checked it online and used thicker and more resilient materials to strengthen my strength. Or use a shorter headphone cable to reduce the total amount of change; you can also put it in your pocket beforehand... In this way, the headphone cable will not be entangled, knotted and other annoying state buildings!

In fact, in our daily life, there is a scientific existence everywhere, but we do not pay attention to it. I believe that as long as everyone is careful, there will be unexpected gains!

Second day: Liu Hao