Robot is a kind of intelligent machine which can work semi independently or fully. The earliest robot in history can be found in the puppet robot that emperor Yang of Sui ordered craftsmen to build according to the image of Liu He. It has a mechanism, and has the ability of sitting, rising, worshiping and lying.

Robot has the basic characteristics of perception, decision-making and execution, which can assist or even replace human beings to complete dangerous, heavy and complex work, improve work efficiency and quality, serve human life, expand or extend the scope of human activities and capabilities.

Source: @alanlavado

Glock pistol is the general name of a series of automatic pistols developed and produced by Glock GmbH of Austria. The original Glock 17 pistol was developed by the Austrian Glock Co., Ltd. in 1983 at the request of the Austrian army. Since then, the Glock pistol has become famous all over the world.

Nowadays, Glock pistols have developed into a large family with 34 kinds. This series of pistols covers the global military, police and civilian markets, among which the military equipment of more than 40 countries, and the law enforcement units of many countries are their loyal users. In the civil market, it is highly respected.

Source: @arnaz_disaster

As we all know, our life will be full of the memory of art. Even in the era of rapid development of science and technology, there are always artists. Not everyone can be inspired to create art. As a tattoo enthusiast, they are eager to get unique tattoo ideas to attract attention. The simplest way is to use materials or creative technology that no one has used before.

Art comes from life. Today, I will join you to see the broken glass tattoo. The texture effect of broken glass is very unique in tattoo Tattoo patterns, broken glass lines show an amazing artistic effect.

Source: @_cecile.art_

Zebra is pure black at the early stage of embryonic development, and white stripes appear only when the formation of melanin is inhibited at the late stage of embryonic development. Each zebra’s black and white stripes are slightly different, just like their own natural bar code.

Zebra Print, black and white with fresh and charming, simple can wear a sense of fashion, especially in spring and summer this year, daily wear with zebra pattern elements, even if the package is tight, it can also send out the wild and sexy taste of animal pattern! Come and take a look at the zebra Print tattoos I collected for you.

Source: @_jose_g_p_

How powerful is the bullet? If you know the structure of the bullet, you will know that the reason why the bullet can be shot out of the gun is that there is a certain amount of gunpowder inside the bullet. When the firing pin in the gun hits the bottom of the bullet, it will ignite the gunpowder in the bullet, thus providing kinetic energy for the bullet when it is fired. Therefore, if the performance of the gun is better, the kinetic energy of the bullet will be relatively greater.

Kinetic energy is only part of the reason why bullets can cause damage to targets. It is understood that when the bullet is fired out of the gun, it will also rotate rapidly. When the bullet enters the body, the gravity generated by the rotation of the bullet will tear the surrounding cell tissue. If the bullet happens to be near the artery, it will cause massive bleeding.

Source: @adtattoos