Who is the first person in the world to go into space?

 Who is the first person in the world to go into space?

 Russia's Colonel Yuri Alekseevich Gagarin first traveled to space. Yuri was born in 1934 in a simple farming family.

 He took training in aviation and earned a degree from the Zhukovsky Air Force Engineering Academy in 1967. Then on 12 April 1961, Yuri Gagarin, as the driver of the Vostok One spacecraft, orbited the Earth for 108 minutes.

 Returning from the journey, the words in which he described the black sky, bright stars and blue earth were no less than a poem.

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Why does the tail of the Lizard get separated?

Why does the tail of the Lizard get separated?

 In this context, it may be surprising to know that the tail of a lizard does not break accidentally in these circumstances, but in such a situation, it separates it from its own body by jerking it.

 Most of the lizards have a longer tail than their body and when they are running for the safety of their life in fear, they separate their tail from the body to divert the attention of the enemy to the other side!

 This broken part of the tail keeps moving for a long time (you must know that every living part keeps on moving for some time when it is separated) and this distracts the attention of the enemy, due to which it itself secretly From there escape safely!

 The funny thing is that the lizard does not cause any pain or harm due to the separation of an important part of its body from the body, and after some time its new tail grows as before! This new tail does not take the same length as the old one.

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wounds howheal?

wounds howheal?

 Wound healing, or wound repair, is a complex process by which the skin (or any other organ) repairs itself after injury. In normal skin, the epithelial (outermost layer) and endoderm (inner layer) remain in a steady-state equilibrium and maintain a protective barrier against the external environment. The normal (physiological) process of wound healing begins immediately after the protective barrier is broken.

 The ideal pattern of wound repair is divided into three or four successive, but overlapping, stages: (1) hemorrhage (stop bleeding) (this is not considered a stage by some authors), (2) inflammation, (3) ) production and (4) reconstruction. skin injury,

 A complex biochemical event takes place in the form of a finely tuned cascade for wound repair. Within minutes after an injury, clotting cells (thrombocyte) accumulate at the site of injury to form a fibrin clot.

 This clot acts to stop active bleeding (hemorrhage). In the inflammatory stage, the bacteria and residues are consumed by the predator cells, and factors are released that cause the cells in the proliferative stage to migrate and divide.

 In the proliferative stage, there is blood vessel formation, collagen storage, granulation tissue formation, epithelialization and wound contraction. In blood vessel formation, new blood vessels are formed by vascular endothelial cells.

 In fibrogenesis and granulation tissue formation, fibroblasts proliferate and secrete collagen and fibronectin to form new, functioning extracellular matrix (ECM). Additionally, epidermal re-epithelialization occurs, in which epithelial cells proliferate and "crawl" over the wound to provide cover for new tissue.

 In contraction, the wound is further reduced in size by the action of myofibroblasts, which form a grip on the ends of the wound and compress themselves using a process similar to that of smooth muscle cells. When the role of these cells is fulfilled, spontaneous cell death occurs of unnecessary cells.

 In the maturation and remodeling stage, collagen regenerates and rearranges along stress lines and cells that are no longer needed are spontaneously removed by cell death. However, this process is not only complicated but also brittle, and it is likely to be disrupted or fail, leading to long-term canker sores. Factors that contribute to this include diabetes, vein or artery disease, old age, and infection.

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Why do fish die when taken out of water?

 Why do fish die when taken out of water?

 Fish is an aquatic animal, it does respiration through gills.  The gills absorb the oxygen dissolved in the water and release CO2.  When the fish is thrown out of the water for a while, the respiration stops and hence it dies.

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Why does the Earth and all the planets rotate on their axis?

 Why does the Earth and all the planets rotate on their axis?

 When the Solar System was formed, a cloud of gas was moving around its center.  This cloud later came into existence in the form of Sun and other planets.

 According to the law of indestructibility of angular momentum, all the objects should also rotate similar to the rotation of that cloud.  For the same reason, not only the Earth, all the planets and the Sun also rotate on their axis.

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Why do milk teeth break?

 Why do milk teeth break?

 Children usually begin to lose their primary teeth between the ages of 6 and 7, when their jaws are of mature size.  This is because a child's jaw is too small to accommodate a permanent tooth.  Between 6 years and 9 years, the child's jaw continues to develop, he slowly starts losing his teeth, permanent teeth start coming at the rate of milk teeth.  The permanent teeth growing from below loosen the milk teeth and come out.  Milk teeth are responsible for providing guidance for the growth of permanent teeth (adult teeth) and their proper placement.

 Different types of teeth fall out at different times, with the front teeth falling out first.  Bonus Info - Do Animals Lose Milk Teeth Too?  Yes, milk teeth are found in all types of mammals, including dogs, cats, which fall out and turn into permanent teeth.

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Why does the color of the air do not appear? & One more facts.

 Why does the color of the air do not appear?

 Any object (solid, water, air) color depends on the color of the light reflected by its particles. Normal air particles do not reflect any light color. One reason is that the density of its particles is very low. But some gas like chlorine particles reflects yellow-green, so he looks yellow green. 

Why is the color of the teeth white?

 The Cover is made of the Celestium and the white of the calcium appears tooth white.

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What is solar power and how is it generated?

 What is solar power and how is it generated?

 Solar power is the power obtained from the sun.  This power is used by converting it into electricity.  Actually this form of energy is called solar power.

 Solar power is used in homes and cars.  This form of energy is clean and pollution free.  Solar panels are needed to receive and use energy from the sun.

 These solar panels are placed on the roofs of the house and in the open ground, where the direct sunlight comes on it.  Solar panels consist of solar cells that harness the energy received from the sun.  Because solar energy is converted into electricity by solar panels.

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In the summer days the days are long but is the time also long? &One more facts.

 In the summer days the days are long but is the time also long?

 Time is not small. In summer the sun rises early and sets late, so the days are longer.

 Why is the light white in a tube light as compared to a bulb?

 The color of the light of a tube light depends on the gas filled in it. If it contains carbon dioxide, it gives white color, if it is neon, it gives red light. But the filament of tungsten in the bulb gives light yellow color.

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When the earth rotates, we don't fall?

 When the earth rotates, we don't fall?

   The force of gravity that binds you to the earth!  The size of the Earth is many times larger than the size of a human, due to which humans do not feel this rotational motion.  For example, put an ant on a football and spin the football, the ant will not fall.

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Why do elephants keep crying and shaking their ears throughout the day?

 Why do elephants keep crying and shaking their ears throughout the day?

 You must have always seen that the elephant keeps on moving its ears throughout the day, have you ever wondered why?  In fact, the elephant releases the heat of its giant body out through the ears.

 This work is done by the cells of the ears of the elephant.  This is the reason why African elephants have very big ears, because there is a lot of heat there.  Elephant's eyesight is very poor.  The special thing is that they see less in bright light and more in low light.

 The pupils of the elephant's eyes dry very quickly, due to which they are unable to move their eyes.  In order for the pupils to move easily, it is necessary to keep them moist, which is why the elephant's eye keeps on supplying a fluid, which comes out of the eye when it is more, which we consider as tears.

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What are Lights?

 What are Lights?

 Light is a small amount of energy that can be transported.  A photon, which is an elementary particle and has no real shape.  It can never be divided.  Can only be created and destroyed.

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Why does hail fall?

 Why does hail fall?

 The water of the ponds and the sea evaporates and forms a cloud of rain in the sky and these clouds rain water.  But when the temperature in the sky drops to several degrees below zero, then the moisture present in the air gets condensed i.e. in the form of small droplets of water.  More water freezes on these frozen droplets.  Gradually they take the form of snow balls.  When these balls become too heavy, they start falling down.  While falling, colliding with the hot air of the way, they turn into droplets.  But the thicker balls that do not melt completely fall to the earth in the form of ice balls.  These are what we call ole.

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Why are water droplets round?

 Why are water droplets round?

 When water falls in the form of a drop, the water droplets take a circular shape due to the surface tension.  Surface tension is a specific property of the surface or surface of a fluid.  Due to this property, the surface of a liquid is attracted to another surface (e.g. towards another part of a liquid).  Due to surface tension, the drop of mercury assumes a circular shape.

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How is curd made from milk? & More 3 Facts.

How is curd made from milk?

 Yogurt is formed by the fermentation process of bacteria. Fermentation of lactose forms lactase (lactic acid), which reacts with milk proteins to turn it into curd.

 It also gives it its special texture and characteristic sour taste. Yogurt contains protein, calcium, riboflavin and vitamins etc.

 Why do hurricanes and cyclones occur?

 Due to a sudden decrease in air pressure at a place, there is a possibility of air coming from the place of high air pressure there. Storms, hurricanes, cyclones come at the speed of the oncoming wind.

 How are clouds formed?

 The water of seas, lakes, ponds and rivers rises up as vapor from the heat of the sun. Clouds are formed from this vapor.

 Why is only one side of the Moon visible from Earth?

 It is a small body which is a quarter of the Earth in size. The Moon revolves around the Earth in about 27 days 7 hours 43 minutes 15 seconds and rotates on its axis in the same time, which is why only one side of the Moon is visible from Earth.

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Why is nitrogen gas filled in aircraft tyres?

 

Why is nitrogen gas filled in aircraft tyres?

 Air contains up to 78 percent nitrogen, while 21 percent oxygen and one percent other gases. Nitrogen does not harm rubber,

 While oxygen can damage the tire. Oxygen often causes the tire to lose its elasticity and strength. In such a situation, oxygen attacks the rubber particles, due to which there is a risk of tire burst.

 Nitrogen is cooler than oxygen and is rubber friendly. However, nitrogen is not completely pure. Nitrophils reduce tire inflation and help the tire stay normal. Nitrogen can stay in the tire for a long time, while oxygen runs out quickly.

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What are cyclones, and how are they formed?

 

What are cyclones, and how are they formed?

 Cyclone: ​​A strong storm of warm winds around low atmospheric pressure is called.  In the Southern Hemisphere, these warm winds are known as "cyclones" and move in a clockwise direction.  Whereas in the northern hemisphere these hot winds are called "hurricanes" or "typhoons".  They move in anti-clockwise direction.

 Due to the intense heat of the sun in the sea of ​​hot areas, the air heats up and creates an area of ​​low air pressure.  The air heats up and rises rapidly and becomes saturated with the moisture above, condensing to form clouds.  The moist air moves down and up to fill the void.  As a result, these winds move around the area very quickly, causing heavy rain and thunderstorms along with thunderstorms.

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Why and how do clouds burst?

 Why and how do clouds burst?

 Most of the cloudburst disasters occur in mountainous areas. In such an event, the air laden with heavy moisture hits the steep hills in its path, which leads to the formation of a special type of cloud.

 When the air pushing these moisture-laden clouds upwards weakens, suddenly a torrential rain starts from these clouds, which is called cloud burst. Meaning that special types of clouds are responsible for the bursting of clouds.

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Why do stars twinkle?

 

Why do stars twinkle?

 Seeing the twinkling stars in the sky, we feel as if they are not shining continuously, they stop shining moment by moment.  But there is no such thing.  The stars are always shining the same way.

 Actually, the light emitted from the stars has to face the obstacles existing in the atmosphere before reaching our eyes.  Therefore, their light keeps getting distracted on the way, it does not reach us directly.

 The atmosphere consists of several moving layers of air.  These layers keep changing the path of the light of the stars.  As a result of this, their light sometimes disappears from our sight, sometimes it keeps appearing.  That's why the stars appear twinkling.

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Why does the sun appear white?

 

Why does the sun appear white?

 There are two types of primary colors.  One, the colors of light are red, green and blue.  And the other ones which are the pigments i.e. the colors of the substances.  That is, those which we use in painting etc.  These are red, blue and yellow.  Broadly the difference between these two is in the properties.  One has the ability to add up and the other to decrease.  The primary colors of light are called additive colors and the colors of pigments are called subtractive colors.

 Now understand the difference between these two.  The special thing about the colors available in the form of pigments is that they absorb all the colors when light falls and reflect only that color of which it belongs.  as the sky reflects only blue and

 That's why it appears blue.  Clearly, the tendency of the colors of a substance is that it removes all other colors except the color of the object.  That's why they are called subtractive colors.  On the other hand, colors of light have a different tendency.  Its specialty is that it appears as it is.  If there is red light then there is red colour, if there is green then it is green.  But if any two colors come together, they mix.  If red and green color mix together, then it will appear yellow.  That is, the colors of light have the property of joining.

 Hence they are called additive or additive colours.  Have you ever thought that sunlight appears white to us, but it is a mixture of all the primary colors.  This is the specialty of being an additive, but if you want to make a white color by mixing the primary colors of the substances, then it is not possible.

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