Can we travel in time to our past and to our future?
How does it relate to light?
In our Universe so far, what is the fastest thing we know of? Light
Would it be possible to go at the speed of light?
or even faster? How would it feel like?
Lets do a thought experiment
If something can go faster than light, we can predict the future
Pretend there was a cup in front of you
Pretend the cup suddenly broke
Now assume, sound was faster than light
Since we are pretending that way
we would hear it breaking first before we actually see it happen
But in real life sound is super duper slow
compared to light
In this example the sound waves reached your ears first
before the light waves reached your eyes
In that example, we predicted the future that the cup would break
by hearing it before we could actually see it happen
If something was faster than light, we could see it happening in our heads, before we could see it happen
Oh, now I get it..That's why Einstein said
we can't pass the speed of light
What is the speed of light?
300,000 Km /sec
That is super fast
I can't explain in my words
Somebody made sure that we can't pass the speed of light
because the mass would increase infinitely
Which means
Somebody wanted us specifically
not to see our future
but why?
Why would mass increase with speed again?
lets take this example
Thought experiment 2
Pretend there was a big boulder
Pretend a man was trying to pull it
Pretend there is speed of light energy pulling it the opposite way
then the man would feel that the boulder has increased by infinite mass
 
That's why E=mc2 the God's equation
Now I am going to tell you a scary story
of a cat that was both dead and alive
at the same time
A great scientist, named Schrodinger
did a thought experiment like we did
He did this thought experiment
He got a cat and put his cat in a box
The he put some radio active materials into the box
and closed the lid
He wouldn't know if the cat was dead or alive
Until he opens the box to find out
If could be dead because of the radio active materials
or it could be alive
because it survived the radioactive materials
Schrodinger said
that the cat was both dead and alive
at the same time
How could this be possible?
Its the same way
I gave you that possibility of light being a wave and a particle
at the same time
but this time with the cat being dead and alive at the same time
If light was a wave there will be infinite possibilities of the future
but if light was a particle it would only have
one possibility for the future
How do we know if light is a wave or a particle
Have there been any experiments done
In Quantum mechanics, the most famous experiment
done is the "Double slit"
A great scientist named Thomas Young did this experiment
Do you want to know what the results of this experiment were?
When light was being observed then it would be a particle
but when it was not it would be
a wave
Which means when somebody was observing it
there would only be one possibility
When somebody was not observing it
there would be infinite outcomes
like the cat that was both dead and alive at the same time
which leads to multiple outcomes happening at the same time
when we observe it, it shrinks to one
How come light knows
if we are observing it
when it doesn't have eyes or brain
to see us or to know
What if we put an observer  after it started its journey
Scientists did this experiment and light knew
that there is an observer in the future and
and changed into a particle
It means light can see the future
and change the past too
Thinking already?
I know
Don't you think we unlocked one of the GOD's secret codes?
Signing off..Prince
