science knowledge

   Currently there are just two vaccines are available in India Covishield and covaxin . Covaxin is fully india made vaccine by bharat biotech , and covishield is indian made version of astrazeneca's vaxzevria jab which has been manufacturing by pune based serum Institute of india . How they are made?  Covaxin is inactivated vaccine which has been prepared on trial and tested platform of Dead viruses. This vaccine is based on whole virion inactivated vector cell derived technology . It contain inactivated viruses, despite that it doesn't affects person. Instead of that it teach  human imune system to create a defence mechanism against active viruses.  Covishield has been prepared by using viral vector platform which is completely different from the covaccine technology .  Chimpanzees adenovirus has been modified to carry covid-19 spike protein into human body cells This cold virus is unable to affect human body but it can teach to our human system to...

                In simple words PH is the power of hydrogen ions or atom's. We can measure PH of   aqueous solutions by using PH meters and PH   paper.  At first we wil talk about PH meter and then PH paper. At first we must know the range of PH. You can see the range of acids and bases in the above image. If PH is 7 means solution is neutral, and if PH is between 1 -6 then solution is acidic, between 8 - 14 is basic.  If any one of them PH indicators show us solution is acidic means that solution contain more H+ ions or atoms  than OH- ions or atoms. H+ > OH-            And if any one of them PH indicator show us solution is basic means that solution contain  more OH- ions than H+ ions. H+ < OH- If we use PH meter then it will directly show us PH of solution, from that PH we can identify it's  acidic or basic or neutral.          ...

     At first we must know about our solar    system. Our solar system has been situated in Milky way   which is our galaxy. There are a lot  of galaxies and they all contain numbers of   solar systems just like ours milky way. One interesting fact is that all galaxies does have their own gravitational force and that all are held together by that gravitational force.  Just like galaxies, all planets which are situated in that different galaxies also have gravitational force and that force is responsible for the movement of planet's in there particular orbits around the sun. Sun is the centre of our solar system just like centre of any atom and other planets are moving around the sun just like electrons but in our solar system single orbit contain only one planet.  That all planet's have there different gravitational force. Ther are 8 planets in our solar system which have gravity and Jupiter have more gravity than other remaining s...

 What makes us human ? In my opinion there are several things that makes us humans. Some of them are 1. Intelligence   2.  Humanity and kindness  3. More brutal ( cruel ) than other species first of all i would like to know what humans  are in you perspective, kind or bad or brutal .  its big question because everyone  have their own Perspective about themselves and others. Some of them think we humans are  kind and some of them think we humans are  bad and cruel. So there are two different perspective and possibilities about we humans.      There is most important thing that makes us humans is our intelligence.         Just because of that intelligence we are  superior than other species who are living on this planet called earth. Actually earth is just planet which is life source for human. We humans are the one who have given this name to the earth. Off cource Other species are in...

    Almost all animals and birds can see in dark. But humans cann't  see in dark or in night clearly. Just because of that ability to see in dark, some animals and birds can servive easily in this word ( owls ). We all know they can see during day too, but ability to see in the dark make them special than humans.     Let's see how they can see in the dark .   The animals which can see in dark called as nocturnal animals . Nocturnal means ability to see in the dark. They can see in the dark just because of there eyes structure. Nocturnal animals eye contain specific rods cells that carry rhodopsin in the eyes that helps in the night vision . that rhodopsin are very sensitive to longer red wavelength.          Retina is the composition of rods and cones . Rods are not able to capture light as sharply as cones do. but That rods are very sensitive to low light level and hence responsible for the vision in night. Different animals...

  When we see the sun in midday it looks yellow but at the sunset it looks red. do you know why.                  If you wants know that, you must know range of visible region .            Why sun looks yellow in midday ? Sun looks yellow in midday because, blue, violet colours have low wavelength but high frequencies , because of that, they scatter in all direction and sky looks blue . That means we just have to consider remained yellow, orange and red colours . This three colours  have low frequencies but high wavelengths, as compare to blue and violet colour . that is why they easily reach to earth surface.                           There are three colours eventhough sun looks yellow because if we compare just these three colours, then we can understand orange and red colours have high wavelengths and low frequencies. But yello...

    Air is the composition of different type of gasses. Let's see percentage of that gasses in the air. 1) Nitrogen   =             78.09% 2) Oxygen   =                20.95% 3) Argon   =                   0.93% 4) Carbon dioxide =  0.039% 5) Neon   =                     0.001818% 6) Helium   =                 0.000524% 7) Methane   =               0.000179% Oxygen  gas always present in air in molecular form. Everybody has seen at least one time, balloons always go upward direction in air.   Do you know this is why, because balloons  filled up  helium gas which is very light weight gas.         Methane  gas is responsible for gree...

 In twenty first century. We All know the importance of nature. Nature is the integral part of our life. without nature life is nothing, nature is the only one thing that is responsible for existane of human and all living organisms.                          We just know that but we are doing nothing to save that nature. Now We all know the importance of nature because that type of situations has been created in the whole world. Just Know the importance of nature is not big deal But execution is most important thing.                          Every mother and father teach to their babies, this is a tree, this is a mango etc. but they should know tress are not show piece. You should teach your babies in childhood, this is  a tree and we have to save them. Because if we take care of them now, they will take care of us in future. We ...