Leprechaun is a little Banshee dressed in green in Irish folklore. Leprechauns carried two leather money bags, one for silver shillings and the other for gold coins. These are magic coins. The silver shilling will return to the purse after paying, while the gold coin is used when he bribes in an emergency, and usually returns to the leaves or bushes after he leaves.

Leprechaun existed on the island of Ireland before the arrival of Celtic culture. It is only a small role in Irish legend. It used to spread only in Leinster Province in the north and was publicized as a national representative mythical role. In Irish, their names are written as Leipreachán。

Source: @agathelarouge

Propeller is a kind of propeller which converts engine power into propulsion by rotating blades in air or water. It can have two or more blades connected with the hub, and the backward side of the blade is a helicoid or similar to a helicoid. There are many kinds of propellers, which are widely used, such as the propellers of airplanes and ships.

In 1836, the British Archimedes used a screw propeller, which is a long wooden screw like screw. At the beginning of the test, it sailed at a speed of 4 knots. Suddenly, the obstacles in the water broke the screw, leaving only a small section. Just as Smith, the shipbuilding engineer, was at a loss, the ship unexpectedly speeded up to 13 knots. This inspired the shipbuilding engineers. They changed the long screw into the short screw, and then the short screw into the blade shape, so the propeller was born.

Source: @bonedeep

In reality, we have to come into contact with kitchen knives or fruit knives every day. It is undeniable that such daily necessities are also dangerous. Therefore, in addition to cooking and cutting fruits, we seldom think of the use of knives, except in extreme cases.

What is the moral of Knife? Knife symbolizes power. The superior presents to the subordinate, which means authorization and reliance on the subordinate. The subordinate presents the superior as a token of submission and loyalty to the superior.

Source: @369.inkstudio

Kidney is an important organ of human body. Its basic function is to produce urine, so as to remove metabolites and some wastes and poisons in the body. At the same time, it can retain water and other useful substances, such as glucose, protein, amino acids, sodium ion, potassium ion, sodium bicarbonate, etc., through reabsorption function, so as to regulate water, electrolyte balance and maintain acid-base balance.

At the same time, the kidney also has endocrine function, producing renin, erythropoietin, active vitamin D3, prostaglandin, kinin and so on. It is also the degradation site of some endocrine hormones and the target organ of extrarenal hormones. These functions of the kidney ensure the stability of the internal environment and normal metabolism.

Source: @arielfendertattoo

Kestrel: one of the small birds of prey of Falconidae. Body weight 173-335g, body length 305-360mm. Its wings are long and narrow, and its tail is long. Its shape is very similar to that of common clawed falcon. The male has a bluish gray head, brick red coverings on the back and wings, with triangular black spots; the coverings and tail feathers on the waist and tail are bluish gray, with wide black secondary and white end spots on the tail, with a vertical downward black corner mustache pattern at the moment. The chin and throat of the lower body are milky white or brownish white, and the rest of the lower body are milky yellow or brownish yellow with dark brown longitudinal lines and spots. The female’s upper body is brownish red from head to tail, with dark brown longitudinal lines and transverse spots, and the lower body is milky yellow, with black brown longitudinal lines and spots except the throat. Yellow feet and toes, black claws.

They inhabit in the mountains and wilderness, and mostly move in single or pairs, flying higher. It is famous for its flying habit when hunting. It feeds on large insects, birds and small mammals. It is rare in eagles that there is a difference in the color pattern between the sexes; the males are more colorful. It is widely distributed in Africa, Palaearctic, India and China, wintering in the Philippines and Southeast Asia. Very common resident and seasonal birds, except in arid deserts, all over the world. It’s the national bird of Belgium.

Source: @_alvarito_tattoo