Spiral is one of the most common shapes in nature, and it is used in DNA and many other micro structures found in biological cells. Why, however, is nature so partial to this structure? Physicists in Pennsylvania believe they have found the mathematical answer to this question. Their findings were published in a recent issue of science.

Spiral is a kind of twisted curve like spiral and screw. It is a common shape in biology. For example, it can be found in DNA and many proteins. The helix is divided into left-handed and right-handed.

Source: @_none.tattoo

Generally speaking, locks made according to mechanical principles need to be opened by inserting a key into them, such as door locks, bicycle locks, safe box locks, etc. In this way, a keyhole is naturally formed so that the key can be inserted normally. The size and shape of the keyhole are set for a key that matches the lock exactly.

There are many materials that can be used in tattoos. Today I will introduce you to the keyhole tattoo. These tattoos are very special, and many people like these keyhole tattoos. If you don’t know what tattoo pattern to choose, you must consider the lock hole pattern, because the lock hole pattern will enhance your connotation.

Source: @acaremrex

The broad sense of nature includes the whole objective material world including human society. The material world exists and changes in a natural way. Man’s consciousness is also the material world that happens in a natural way. Human and human consciousness is the highest product of the development of nature. The material world is systematic, complex and infinitely diverse. It includes not only the material world known by human beings, but also the unknown material world.

The narrow sense of nature refers to the material world different from human society. That is, the inorganic and organic fields studied by natural science. The relationship between nature and human society: nature is like cream on the edge of bread, while human society is bread. Society refers to science and technology, humanities, greening, competition and commerce, which are virtual things, while nature is real things.

Source: @_littlelo

The first symbolic meaning of a Rat is spirituality, which includes its dexterity and performance channeling. The Rat has a sensitive sense of smell, is timid and suspicious, and has high vigilance. In addition, it has two other sudden abilities: from tens of meters or even hundreds of meters high, the roof of the building falls to the ground, turns around and gasps for a breath. It can do whatever it wants to do, and there is absolutely no fear of life.

Although the Rat is not an aquatic animal and has no strong swimming skills, it can not be stopped by a shallow pond with narrow ditches. In order to survive, it can drill several meters away from the bottom of the water without any damage. So it’s a waste of time to fall or drown a Rat.

It is also believed that rats are psychic and can predict good or bad luck. In fact, rats are born in nature and grow up in nature. It is normal for rats to make certain branch reactions to unexpected events in nature, such as earthquakes, floods, droughts, locusts and so on. This is a special instinct of living things on earth. However, some knowledge limited to human beings has not yet revealed its mystery and law.

Source: @_octo_tattoo_

The symbolism of the grasshopper and the symbolic and cultural roles played by this great creature in the field of insects. As a cultural symbol, this insect is a prominent feature of Asian tradition.

In fact, grasshoppers are considered to be fertility symbols; especially a harbinger of a son’s birth. In some parts of China, grasshoppers are kept as family pets. It is believed that grasshoppers embody the personality of the deceased’s family members. Keeping these reincarnated souls in the form of grasshoppers ensures the prosperity of family members.

In ancient Greece, the grasshopper was a symbol of identity. Athenians decorated themselves with golden grasshopper combs and brooches as symbols of nobility. The grasshopper is also a symbol of immortality, as we can see in Greek mythology, when Zeus bestowed immortality on Titus, Titus later became a grasshopper (of course, he lives forever).

Source: @_______joe_________