a stem enthusiast a robot builder a
youtuber and she won internet the
International sabes star science fair
2016 her work for Bionic for her work in
biotech biotechnology Bionic technology
I’m sorry she regularly performs open
mic being a two-time poetry slam winner
get this hello good morning um so I’d
like to describe an event that
fundamentally shift my scent I shifted
my sense of purpose so in 2009 my family
and i visited the nilgiri mountains in
bangladesh we came across a small
community of small grocery stores of
people that lived in 10 houses and
schools during our two-week stay over
there I came across a girl named Samia
now Sami and I had a lot in common we
both really liked to read so when she
showed me around her house which was
hurting home I saw school books and
having seen the school before school
before I I was slightly envious how
amazing is it to live in such beautiful
mountains away from civilization and yet
still have access to food and education
so when I asked her about her school her
hamster shocked me she said that she
didn’t go to school she explained that
even though her school did provide
morning classes she didn’t she didn’t go
because she would come home in the
afternoon and then go straight straight
to work and then come home in the
evening and by the time she came home it
was already night time now that doesn’t
really seem like a huge problem right I
mean not to us in our air-conditioned
homes
and few old cars but she said that she
couldn’t go to school because she didn’t
have electricity to study at night and
that broke my heart because here I am
right in front of you and I have
everything but you don’t and it’s all
because of electricity so I thought to
myself what could I do to help you is
there a way to provide free access to
energy to those who cannot reach it when
I came back home to Abu Dhabi I felt
during my research I came across Nikola
Tesla now Nikola Tesla was a pioneer of
wireless electricity while doing more
research I realized that it is not it is
not the source of energy that is the
problem we have many different sources
of we have many different sources of
renewable energy like solar energy tidal
energy etc especially solar and nuclear
energy that have that has expanded that
has expanded over recent years for
example solar solar cell efficiency has
went up from 7.6 percent to 48.6 percent
in the last decade in a recent
breakthrough in Germany we have
successfully used nuclear fusion to
power a small section of Germany and so
that tells me that it is not the source
of energy that is a problem rather it is
a propagation of energy that’s the
problem how do we get that energy to
people living in the outskirts so so um
power lines don’t often reach the
outskirts of cities they’re often
centralized around cities and when the
power lines which are propagated through
wires do reach outskirts they do so in a
really unreliable way and also in a
really hazardous way and so what could
we do to replace that
and this is where Nikola Tesla comes in
he was a pioneer of wireless energy so
Nikola Tesla came up with the concept of
a Tesla coil in 1891 and the way a Tesla
coil works is that you take one coil and
then you put it into a magnetic field
and when you put that coil into a
magnetic field it induces a current it
induces a current in that mcnett in that
coil and that induces a magnetic field
when you place a second coil in that
magnetic field the magnetic field sends
the energy the current from the first
coil to the second coil and that further
provides electricity for example this
method is called induction and this is
how a wireless toothbrush works now ok
that’s cool like induction if it’s so
easy to provide wireless energy like
that why don’t we just use induction
large-scale well there are two main
problems with that the the problem with
the first problem with induction is that
it only works on a really really small
scale the coils have to be really close
together once you separate the coils the
energy transmission ceases I’m pretty
sure most of you physics students know
the inverse square law that the energy
that the energy of the waves electric
waves decreases with the inverse square
of the distance from the source the
second problem the second problem is
that the energy transmission ceases um
so Nikola Tesla wanted to implement this
on a large scale and he thought to
himself how could I possibly implement
us on the large scale if I can’t
separate the two coils we need to have a
distance between them in order to have
long distance transmission and he
realized that I could use resonance in
the Earth’s ionosphere instead of using
instead of using a coil a second coil we
could just use the Earth’s ionosphere as
the second coil so residents so
resonance is the tendency of an object
to gain energy as oscillations that pass
through it match the objects vibrations
inherent vibrations and the ionosphere
is just a section in the Earth’s
atmosphere
that contains ionized gases which allow
electricity to pass by it so he thought
that if he could get the perfect
frequency the resonant frequency to to
be in the Earth’s at to be in the
Earth’s ionosphere that would allow that
current to pass through that ionosphere
so just like once you match the
resonance frequency of the ionosphere
that allows you to change the energy in
the current to a usable form of energy
and since the ionosphere is around
surrounding our earth he thought that it
would it would allow that energy in the
current to be used in other devices on
the earth but this didn’t work out
because he did not properly and
practically test his idea he did not
realize that the ionosphere was far too
weak to carry out to carry out that idea
so in 2006 an MIT professor the one on
the left um the one on the right choke
that show that he thought that if we can
to use the ionosphere what method of
propagation could we use and he thought
to himself okay they use electric waves
initially but that wasn’t working we
can’t propagate the ionosphere it’s too
weak but what if we used magnetic fields
what if we use magnetic fields with the
same principle of the previous idea so
he and his team did that what they did
was that they took a coil and they
oscillated the oscillated it at a really
high frequency and then they took
another coil and they trained it to
recognize that frequency so that it
would couple the energy between them and
it would cause that energy to be sent
magnetically rather than electric rather
than electric better than electronically
so what they did was that they hung up
two coils and the light bulb was
inducted optionally connected to
connected to the power source and the
other one was also connected to the
power source
so what happened was that he found he
found that at a twin at a 2 meter
distance he found that the efficiency of
power transmission to light the bulb was
forty-five percent even when he placed a
wooden block between them he found that
the energy transmission was still the
same so it was much more efficient than
electric waves magnetic waves are far
more efficient than electric waves when
he could when he when he decrease the
distance between the two coils he found
that the efficiency rose to 93 bum this
project was called why tricity and he
spun this off into a into a startup
called by the same name by the same name
why tricity and they and since they use
magnetic fields as opposed to electric
fields it has four implications so as I
mentioned before when you use electric
fields you can’t separate the two coils
but when you use magnetic fields this
actually allows you to change the
orientation of the source and the
receiver and it also allows you to
increase or decrease the distance
between them the second implication is
that you can charge multiple devices
from one source since we’re inducing a
magnetic field as long as you place the
objects close to the magnetic field or
in the magnetic field it automatically
it automatically gets charged the third
implication is that they don’t
necessarily have to be the same size if
you have a large power source your phone
doesn’t have to match the size
equivalence of that power source rather
since you have the adaptability of being
able to change the distance between them
you can make up for the size difference
just by changing the size but by
changing the distance between them the
fourth implication is that so if we’re
talking about wireless energy on a
global scale the most important aspect
that we need to talk about is how far
can we take this energy so what he found
that he could use passive object called
passive passive objects called resonant
repeaters and what their job was
basically to gather to accumulate the
magnetic field from the first power
source and then send it off further to
another
netra Peter and so far and so far and
this was one way to extend to extend the
the propagation of the magnetic field
and this is currently being used in many
different domains from consumer
electronics to to medical applications
for example you can wirelessly charge um
charge of robots at not robots but
machinery that is attached to your heart
to keep it beating you can also
wirelessly charge I’m hearing aids
they’re also used in electric vehicles
where you can charge where you can
charge a cars without actually having to
orient them perfectly on a charging pad
rather you can just implement them in
your garage park it in and that’s how
easy you can charge your hybrid car for
example and while this idea is kind of
modest compared to Tesla’s idea of
lighting the world with wireless
electricity it still shows that even
though Tesla’s idea did fall apart we
they still managed to find another way
to at least implement this idea on a
small scale and we have to keep in mind
that we always start out small in
science we always start out small but
that only shows us that we have so much
farther to go and I’m really excited I’m
really excited for the future of
wireless energy and I can’t wait to help
contribute to this ever-expanding field
and I hope that I managed to give you
some insight on to what has happened and
I hope you feel as excited as I am Tesla
gave us a direction of wireless energy
and it is up to us to pave the path to
make that a reality and hopefully
hopefully that way I can help the many
many samia’s around the world that don’t
have what we take on a grant we take granted for every day thank you