So, on this day last year , I created this
channel.
Thankyou guys for all your support.
I an very happy in making these videos every
week.
So i'll do this for the rest of my life I
guess.
So let's start our today's video now.
When an object feels hot, it's because the
atoms inside it are moving in a fast random
direction.
When an object feels cold , the atoms inside
it are moving very slowly.
Our body interprets this random atomic motion
as the temperature of that object and the
thermometer calculates this random atomic
motion into certain degrees."
So when i am heating something, i am just
making the atoms move faster?"Exactly, when
an object is a solid , the atoms inside it
are vibrating inside it back and forth.
But if the object is a gas like the air , the
atoms are moving fast in random directions
just like little balls.
"So what does Absolute Zero temperature mean?".
"What happens to the atoms when an object
reaches Absolute Zero temperature?".
All the atoms stop , the gas is as cold as
it can be.
At this point , the gas is at Absolute Zero
temperature.
"Is anything at absolute zero?".
I guess the space must be.
Ok so the coldest place in universe is the
outer space.
But even the temperature there is 3 degrees
above absolute zero.
So as we cool atoms , their kinetic energy
decreases and as we reach absolute zero , they
should reach a point where all the motion
stops.
But that's not what happens.
Yes, the atoms and the particles go to their
ground state but they still have energy that
we call the zero point energy which helps
them to vibrate a little and thus produce
heat.
Atoms and particles have the zero point motion
because of the Heisenberg Uncertainty principle.
So due to the Heisenberg Uncertainty principle,
a particle or an atom cannot have both specific
momentum and specific position.
So if they stop completely, their position
and their momentum will be completely known,
that will violate the uncertainty principle.
And thus we cannot ever reach absolute zero
because there will always be little vibrations
because of the zero point motion which will
always cause heat.
And as always Stay Curious!
Stay Awesome
