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Why do mosquitoes bite itch?

 People usually get bitten by mosquitoes and when mosquitoes bite, they draw out blood. while drawing blood they inject their saliva. Mosquitoes saliva contains anticoagulant and proteins.              When  this protein present in mosquitoes saliva enter in the body then it trigger body's immune system. To fight with this foreign protein substance body's immune system releases histamine (Histamine is a compound that helps white blood cells get to the affected area) It is histamine what causes itchiness, inflammation, and swelling. Mosquitoes bite itch more after scratching it. As when we scratch the affected area, It causes skin to become more inflamed. This inflammation causes skin to itch. After scratching again and again skin can break which may cause infection. One can get immediate relief by applying Aloe Vera, honey, cold tea bag, dilute minced garlic on the bite

IS TIME TRAVEL POSSIBLE?

The concept of time travel can be understood by the concept of time dilation.   So what is time dilation? Time dilation , in the theory of special relativity  , the “slowing down” of a clock   as determined by an observer who is in relative motion with respect to that clock.      Or             It  is a difference in the elapsed time  measured by two clocks, either due to them having a velocity relative to each other, or by there being a gravitational potential difference between their locations. In simple language we can say that time dilation is the slowing of time. For example let a object or a vehicle is moving with very high speed (approx with the speed of light). For the person who is inside the object, the object is at rest but for the observer he is in motion. As the object is moving with speed of light the time is slow for the rider as compare to the observer. Albert Einstein in 1906...

Social Bubbles can limit COVID-19 better than Social Distancing?

As we all are aware about pandemic COVID-19 (coronavirus disease). It has become a huge threat to everyone from past few months. Although we all try to protect ourselves from this disease by maintaining social distancing and by doing other things like exercise,frequent hand washing,proper hygiene, eating healthy food,etc. According to Oxford study Social bubbles can limit COVID-19 better than social distancing. What is A Social Bubble?  A Social bubble is a close set of people i.e like family with whom we interact on regular basis. Keeping in mind the pandemic COVID-19 during current lockdown, a social bubble should be limited to members of a household with whom we interact on regular basis. However, as things normalise this bubble can grow larger. It can then include close friends, relatives and neighbours. In later stage it can expand further. The idea is that if people decide to expand their bubble gradually and make sure that they meet and contact only the persons of...

TELEPORTATION

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Teleportation is the transfer of matter or energy. Transfer from one point to another at a long distance. Thus teleportation is a peculiar phenomenon by which a person can travel a great distance in fraction of second.  I think teleportation is the most fascinating concept. As we all know about Narad Muni, he travels from one place to another within fraction of seconds. Basically on the basis of science we can say that they used teleportation. In our century, It has been observed for microscopic particle. Although it has not yet been implemented in real world (Macro particles).  Basically teleportation can be possible using the concept of quantum entanglement. Quantum entanglement  Quantum entanglement :-when the two particles (usually photons) created together,they behave like twins.Which  Means their behaviour is same and they can have same spin wave,Even without having physical connection between them. They just mimic each other even at vast ...

FIRE HAS SHADOW OR NOT?

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Hey all ! Let us all get through a very simple and quick experiment . Many of you might have already come across this . In a complete dark room light a candle  . You noticed the shadow of the candle on the wall but not the flame ?  Quite interesting and surprising at the same time . Now place a torch behind the candle .        Did you notice the Shadow this time ? Well, Here's  a very simple explanation for it . If the light source behind the fire is brighter than the source itself , the flame would cast a shadow . Shadow is just a darker area which appears when an object blocks the light . Therefore, Flame doesn't cast a shadow because flame itself is a bright source of light and is mixture of many gases summing up to be transparent upto some extent But if you look closely , you will see the bright edge of the shadow . This validates that light was not simply absorbed but was also pushed to the side where it cong...

Doraemon's gadget in real life

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        Many of us have watched doraemon in our childhood. Even many of us still like to watch cartoons. Being child, we all wondered by the gadgets of doraemon. Many of them are exist in real life and many of them will surely exist in future.  Some of the gadgets which do exist in real life are   Bamboo copter: - Bamboo Copter Jetpack Copterpack  In today's life Jetpack and copterpack resemble this bamboo copter. With the help of this  we can fly above the ground, just like Nobita do. Although the jetpack and copterpack has some limitations like they cannot fly for long time. I hope we'll surely overcome this limitation soon. Konyako Translator:- Translator  Through this gadget doraemon can translate those language to their own language to which they are unaware. Like them we also have translators like google translator and so many like them. Dream Reader :- American scientist, Dr Jack Gallant from...

Molecular energy levels (Spectroscopy)

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 Spectroscopy                                                                                     It is the branch of science which deals with the study of interaction of electromagnetic radiation with matter. Because of such interaction the matter absorbs or emits the energy in discrete amounts called quanta. The molecule has electronic, vibrational and rotational energy levels.  ELECTRONIC ENERGY LEVELS:- The difference between the electronic energy level is very large and hence spacing between them is large. Usually these levels are denoted by  E1, E2, E3......... The difference between two electronic energy levels goes on decreasing. i.e (E2-E1) >(E3-E2) (E3-E2) >(E4-E3) Electronic energy levels  VIBRATIONA...