Why Is The Universe Out Of Balance?
TRANSCRIÇÃO COMPLETA
the laws of reality as we know them
fundamentally rely on the principle
of balance
energy can neither be created nor
destroyed
what goes in
must come out
to the 17th century italian physician
santorio santorio exploring this balance
within the human body led to a
decades-long period of
self-experimentation
for 30 years he weighed every liquid and
solid that went into his body and every
liquid and solid
that came out
he weighed his body before and after a
variety of physical exertions
day in
day out
matter in
mata out
confusingly for him his excretions
failed to measure up to the mass of his
food and drink it was as if a campfire
had been burnt to ashes the wood used as
fuel weighing far greater than the grey
flecks left in its place
but santorio believed the missing matter
had to have gone somewhere it could not
just
cease to exist
and by the end of the 18th century
natural philosophers would definitively
demonstrate santori's base assumption
was true the total amount of mass before
and after a chemical reaction was equal
whether it was the human metabolism
breaking down food into smaller
molecular units of fats proteins and
sugars or the woody fibers in a
campfire's fuel releasing carbon dioxide
and water as it burns
each chemical equation is balanced an
equal number of each kind of atom at the
start of reaction and at the end they
merely rearrange themselves into new
substances
but the very light of day showed us this
kind of balance is not always true
in the 20th century when scientists
unlocked the nuclear power of the atom
it was revealed that the total amount of
mass could indeed change
deep within the core of our sun hydrogen
becomes helium but the total mass
involved in creating this helium is
greater than the mass of the helium
itself and no other matter exists on the
end side of the equation
it appeared
unbalanced
but her famous equivalents put forth by
a young swiss patent clerk showed that
mass only needed to be reconsidered as
part of the total energy of a system the
difference in mass is converted into
energy a photon
sunshine
balance restored
but
what would happen
if there were
an inherent imbalance
to the universe
our bodies
our world
entire galaxies billions of light years
beyond the milky way nearly everything
we can reach out and touch consists
of matter
however there is another kind of matter
out there a near identical twin
we call it antimatter and there is
almost none of it left
an obvious enormous imbalance stretching
out across the cosmos
yet without this imbalance
we would not
and could not
exist
at all not a single person not a single
planet
not a single star
where did this imbalance
come from
how is the observable universe packed so
densely with mata with its partner
almost entirely absent
and why did the vast cosmos seem so
perfectly balanced at its inception
yet just not
quite
[Music]
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[Music]
the most famous relationship in all of
physics is often cited to be the one
between mass
and energy
e equals m c
squared c is representative of the
ultimate speed limit for anything
traveling through space and equal to
that of light if it is travelling
unencumbered through pure nothingness
as simple as it appears to be this
equation provided a fundamental basis
upon which einstein's laws of relativity
could stand
in the early years of the 20th century
the world was being ushered into a new
understanding of reality where strange
things happened at speeds and scales
unfathomable to the human mind albert
einstein was merely one of many
brilliant minds revealing how the
extremities of our universe defied
common perception
and so just a few years before einstein
rewrote the laws of nature paul durack
was born in bristol
first a student of engineering he
transitioned into mathematics earning a
phd from cambridge in 1926.
incredibly precise both in thought and
word tales of him sleeping during
lectures would end with his waking to
offer a quick and clever retort to the
speaker his advice to fellow physicist
niels bohr known for his plentiful
drafts of papers was that
you should never start a sentence
without knowing the end of it
[Music]
and from his postgraduate years and
beyond dirac's research obsession lay in
a brand new area of physics
in 1925 quantum mechanics had rewritten
our perspective of the subatomic world
particles though the only ones known at
the time with a proton and electron
could simultaneously exist and be
described mathematically
as waves
by 1926 erwin schrodinger had published
his keystone equation from quantum
reality but dirac noticed it was
incomplete
it didn't account for the effects of
einstein's relativity
someone needed to tackle this problem
diving into the math direct soon
discovered an incredible secret hiding
within the relationship between energy
and mass
e
equals m c squared
was wrong
or rather like schrodinger's quantum
model it was incomplete
merely reflective of one specific
situation when a massive particle is not
moving relative to its observer this
difference is only significant at
extreme speeds yet these speeds are
reached at the imperceptibly tiny scales
of electrons orbiting their atomic
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