Outer space light | what is light

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Outer space light : If u want to know about what is light? What iis relation between light and time? What is 1light year? ,so this post for you.



What is the light?


When we think about light primary thought that it is a source by which we can see every
-thing  as we want and also a great role in
life. Everything depends on light directly
Or indirectly .

BUT WAIT

 What is actual mean of light????
Answer is light is energy.
We know our sun has a great stock of hydrogen and also we know that sun's core
has a very high temperture enough to generate fusion reaction by hydrogen add up
and made a helium atom . This reaction example  of exothermic reaction which produce a more energy . This energy in range of light and this energy we use ......

   Light have approx 300000000 meter per second velocity and as we see it is finite.
    We know no one can travel fast then
light.light cover sun to earth distance in 8 min 27 second. Light from moon to earth take a just 1.3 seconds . Just like that when light travel one year in space then its covered lenght , we called as 1 light year.and its lenght is 9.461*10^15meter. 

     Think .......
     When light is slow than its actual velocity?
       Well as we know  nothing is travel faster 
then light. So if iight speed go down then 
every partical speed go down which mean 
1. Electron motion in orbit will slow.
2.proton and nuetron motion in nucleous 
   Will also slow down.
So overall atomic movement will slow .
when it is slow then every movment in world and also in universe will slow.
And also human being will also slow then 
Our time also will slow.
   
   






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