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Twinkle is a verb which can refer to the action that luminous bodies perform when glow with a slight tremor . This particularity may be due to different issues.

When we observe the stars from the land , we usually see them flickering: that is, we notice that the stars are blinking or that their light turns on and off intermittently. This visual effect is due to the different layers of air that passes through the starlight until it reaches the earth's surface. The eye, in this way, detects said luminosity in a different way according to the layer of air (cold or hot) that runs through the light.

It is important to keep in mind that flickering is not a property of the stars. He Sun , for example, is a star that we never see flashing. As we said above, the fact that a luminous body flashes is linked to the way we perceive its light according to the layers of air that it passes through until it reaches Earth.

It is often said, on the other hand, that a light flashes when it turns on and off quickly . A lamp with problems of Connection or whose focus is about to burn may flicker.

The Christmas tree is a symbol that millions of people prepare with great care every year, decorating it with different elements, ranging from figures that hang from its branches to lights that run throughout its structure and constantly blink . East effect Visual is in itself another symbol of this holiday, since it also extends to the ornamentation of the facades of houses and streets, in towns and large cities alike, according to customs.

While all Christmas lights are sold with the flickering function, there are many people who do not enjoy it, and that is why most of them include a key to cancel it. In itself, seeing the flashing lights constantly is similar to feel the decorations come alive , that he fire of Christmas burns in homes and in the streets, that joy reigns day and night.

Regarding its history, Christmas lights arose before the discovery of electricity; Already in the 18th century, German upper-class families used candles to light their Christmas trees. About two centuries later, electric light bulbs began to be used to give life to various elements of public roads, regardless of the festivities, and finally this technique of decor It was taken to homes during Christmas days. Hollywood has shown us on many occasions that the flashing lights are of great importance in North America: people invest large sums of money in the decoration of their homes, at a level that is not common in other countries.

If we focus on the organism of people and animals, blinking refers to a slight agitation . The eye of a human being It may flicker when the subject is very sleepy or suffers eye strain. The movement is linked to the pressure exerted by blood vessels on the muscles in the area.

This feeling that the eye flickers or beats, can be very annoying, although the environment of the person who experiences it does not perceive the movement at the same level as it. From a clinical point of view, this is called oblique upper myochemy , and usually lasts a maximum of a few days, although it usually disappears in minutes. One of the most widespread tips for treating this condition is to place a warm cloth over the eye and try break .

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