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Showing posts with the label science

Goosebumps:-Inherited but useless ??

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What if i throw chilling water on you or scare you will a big booom?? Your initial reaction will be a shock or after that you will yell at me.But why i am talking about this to you?? Thats because we are going to discuss about an ancient phenomenon which is inherited but has no use for us today.And that is Goosebumps. What are goosebumps ?? Let us get inside bathroom and gather some courage to take a bath.When you stand naked or after pouring cold water on your body, you will observe tiny pores rising up on your skin like our hairs on arms and legs will stand and cause uneven skin and thats what we call goosebumps . These are one of the inherited traits we got from our ancestors . And these are mostly useless now a days. We will know the reason further in the blog. When do Goosebumps occur?? There are mainly 3 reasons for goosebumps to occur: Reaction to cold Reaction to shock (fear) Reaction to music How do goosebumps occur ?? Goosebumps occur when w...

How do they measure distance in space ??

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One night i was surfing on my mobile and i came to know that nearest galaxy to us is  Andromeda Galaxy which is about 2.5 million light years away from us. After reading it i was amazed and one question pooped up in my mind that  How do scientists measure distance between objects in space ?? First of all let us understand that distance in space is measured with reference to light i.e. in light years. One light year is the distance which light travels in one year which is approx 10 trillion km (9,500,000,000,000 km) which is so huge. 1.How do we measure distance with light ?? We measure distance by using time taken by light to reach at an object and multiplied that time with speed of light.For example Suppose light takes 2 hours to reach from one object to another. So the distance= speed*time                         = 1,080,000,000km/hr * 2hr                 ...

Earth Overshoot Day !!!

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Today i am here with a very important topic which i need to discuss with you all which is EARTH OVERSHOOT DAY . We all are aware that we humans are special creatures on this earth because among all creatures only we can develop our self and surrounding to extreme levels. But we are also aware about the consequences of this development which are air pollution, water pollution, soil pollution and many other factors. In other words, we humans in ease of developing ourselves are destroying our precious mother earth.We are eating the earth and using it to its extreme levels and result to it is, on 1st August this year we have used all the resources of earth in this year.It means humans have already used all the natural resources the earth can produce this year. The Earth overshoot day is the day every year beyond which the planet's limited resources will be used unsustainably for the rest of the year. Number of planets needed if we will live like:- Qataris are using e...

How does nuclear bomb works ??

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Approximately 73 years ago, humans witnessed the limits to which any human can go for his/her satisfaction.On august 6, 1945 , Japan suffered a great loss done by United States by dropping one of the most destructive weapon of its time Nuclear bomb .  But what is so special about any nuclear bomb?? Everyone says that it is very destructive and can destroy anything ,but question is HOW ?? How a bomb can cause this much destruction?? Let us know it here in this blog. This blog will be little bit scientific so i will try to keep it simple and we will understand basics by leaving the complications.  Let us start with its principle Atomic bombs work on the principle of fission .To understand this firstly know about atoms. Atom is a positive mass consists of proton and neutron in center with negatively charged electrons revolving around it. As you go up the ladder to atoms their mass , number of protons, neutrons and electrons increases and they become complex. Scientist...

Why we have different blood types ??

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In spite of being so large in population, it is said that we all are relative to each other and have same blood but we don't have same blood type. Its confusing that why do we have different blood ?? Let us know it here. Blood is body fluids in humans and animals that deliver necessary substances like nutrients and oxygen in body.  It contains erythrocytes, leucocytes, thrombocytes ( platelets) and plasma. Humans have 8 blood types. Blood has Red blood cells :-They are delivery and carrier boys of our body. They used to transport nutrients and oxygen to all parts of body. White blood cells :-They are considered body guards in our body.They used to fight against any harmful cell, bacteria or infection in our body. Platelets :-Platelets are tiny blood cells that help your blood cells that help our body form clots to stop bleeding. We are done with introduction about blood.Now let us come to our question that why here are different blood types ?? ...

Why bulls hate red ??

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Bullfighting is a famous sport and many people lose their lives to these bulls.Everyone of us use to get goosebumps while watching bullfighting or crossing close to any bull and especially when we are wearing something red. From decades it is considered dangerous to take anything red in front of bull. As it is considered that bulls hate red and they get aggressive by watching red color . But why is so ??   Why bulls hate red ?? To know this let us firstly know about red color. Red color have highest wavelength among all other colors.  Since red is the color of blood, it has historically been associated with sacrifice, danger and courage. Modern surveys in Europe and the United States show red is also the color most commonly associated with heat, activity, passion, sexuality, anger, love and joy. In China, India and many other Asian countries it is the color of symbolizing happiness and good fortune. So is high wavelength of red color and its significance...

How Does Grenades Work ??

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  Grenades are playing a vital role in wars and time of emergency from many decades. Being small in size they are effective too. But you ever thought that how can a small fruit like object can be so dangerous ?? Let us know about it today in this blog... A  grenade  is a small weapon  typically thrown by hand. Generally, a grenade consists of an explosive charge, a detonating mechanism, and firing pin to trigger the detonating mechanism. Originally  grenades were developed by Chinese around 100 0  AD and later Europeans come up with their gunpowder technology around 15th-16th century but their design was dangerous to use as they were made up of metal with gunpowder inside it and soldier needs to trigger this gunpowder with his own hands and throw it as soon as possible which most of the time causes danger for soldier's own life.But during 20th century, these were upgraded to much better and safer versions. It is interesting...

Why do we dream ??

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Yesterday i was running a 100 m race in Olympics 2020(Tokyo) and was able to break record of world's fastest man Usain Bolt by completing race in just 9.01 seconds and after taking the gold medal, i woke up and went for a bath. That was an amazing dream. Isn't it ??But what really the dreams are ?? Are they any prediction of future ?? Or our incomplete desire ?? Let us know about this interesting topic Why do we dream?? over here. A dream can be a combination of images, ideas, emotions and that usually occurs without our permission in the mind during certain stage of sleep.Many scientists are working to find the purpose of dreams.The scientific study of dreams is called oneirology .

Why glass is transparent ???

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Put a piece of wood in front of your eyes are you able to see through it ??Maybe no, hold piece of plastic in front of you ,can you see through it ?? No. Hold a piece of glass in front of you , you can through it ,thats different than others.But why ?? Ask anyone around you that why glass is transparent, they will simply say that because it don't absorb light and allow it to pass through it , which is right but why so ??Why don't it absorb light like other materials do ?? Have you wondered that something so solid can be so invisible ?? To understand this we need to understand that what glass is and where it comes from.It all began in earths crust where two most common elements are silicon and oxygen .These react together to form silicon dioxide whose molecules arrange themselves in crystal form called quartz. Quartz are commonly found in sand and are main ingredients in types of glass. When quartz are heated high enough the energy makes the molecules vibr...

Why Cloudburst happens???

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In this we will talk about very interesting question that how and why cloudbursts happens ?? But first of all we must know about types of clouds. 20 miles above from the earth space gets starts but between that 20 miles earth has its atmosphere which is made up of a number of layer.Clouds used to float between these layers Altostrats cloud: These cloud float between 2,000-6,000 ft above earth's surface.These clouds are in rapid motion and use to change their shape frequently.And quickly causes rain. Altocumulus clouds: These are similar to altostrats clouds.They floats upto 6000 ft above surface but they are small and of golden edges.At the time of sunrise they seem beautiful. Cirrus cloud: These float between 400-18,000 ft above surface.These are tailed shaped clouds and less dense. Cirrocumulus cloud: These clouds float upto 20,000 ft above surface.Thses clouds are small rounded puffs that usually appear in long rows high in the sky. Cirrostratus cloud: These fl...