today we will discuss
what we call you live forever
circular
what is uniform circular motion
object
goes around in a circle
israelis are
the object is here
this is the velocity
defector
perpendicular
and later in time when the object is
here
the velocity has changed
so to speak has not changed
reintroduce
what we call the periods
courses in seconds
which is the time to go around wants
reintroduce
the frequency f
which we called the frequency
which is the number
org rotations per second
and sort of units arvida second minus
one
the most
physicist will call it hurts
and so frequency
is wrong
divided by t
we also introduce
and europe or something
omega
which we call
angular
velocity
angular velocity means not how many
meters per second
but how many radians per second
so since there are
to pine
radiance
in once a conference
it won't full-circle
and it takes two seconds
to go around loans
is immediately obvious that only got
equals
to park divided party
this is something that i would like him
remember
omega
nickels to play
divided party
two pi radiance
in capital t_ seconds
speed
is of course the circumference comply or
divided by the time to go around once
since two five divided by peers omega
you can also write for these
on the card
this is also something
i want you to remember
these two things
you really want to know
the speech
is not changing
but the velocity vector is changing
therefore
there must be an acceleration that is
not negotiable
you can the rifle that acceleration
must be in terms of magnitude and in
terms of direction it's about a five
six minutes derivation
you'll find
it in your book
i have decided to give you the results
that you read up on the book
sort of become more talk about the
physics
rather than home
derivation
acceleration that is necessary
to make the change in the velocity
factory
is always
wanting towards the center
of the circle
we call it centrifugal acceleration
centrifugal
pointing towards the center
and here
also pointing towards the center
it's a vector
and d
magnitudes
of the center of the public celebration
people to be script divided by
authorities this week
and therefore also only got
square are
and so now we have
three creations
and those are the only three
you really would like to
remember
we can't have it simple example
let's have a
vacuum cleaner which has a rotary
insights which scoops the air out
swinging whichever way you look at it
and let's assume
but the vacuum cleaner of the scoops
attributes are
of about ten centimeter
and that it goes around six hundred
revolutions per minute
six from the party
six hundred rpm will translate into a
frequency f
qcp off ten hurts
so it worked
translate into a period of going around
in one sense
all two seconds
soulmate dot
annular
velocity
just to pipe
divided by t
is then approximately
sixty three
radiance
seconds
and
speaking equals old regard
is then roughly
six point three meters per second
center pinto acceleration and that's
really my goal
the center public celebration
would be only desk radar
or if you prefer you can take the
scrollbar you would get the same answer
of course
and you will find but that is about a
four hundred
leaders
per second square
and that is huge
that is forty times the acceleration due
to gravity
it's a phenomenal
acceleration
simple vacuum cleaner
noticed that the acceleration decent
rebuttal acceleration
you've been hearing are
don't think that it is inversely
proportional resort
that's a mistake
the itself
is a function of our uh... if you were
sitting here then you velocity would be
lower
seems altogether
is the same forty entire
motion you really have to look at this
equation and you see that the some
typical acceleration
proportionally or
therefore if you were
if this were a disk which was rotating
and you were at the center of the disk
the eccentric over television
would be easier
mission work to walk out further out
it would increase
nadi acceleration must be caused by
something
there is no such thing as a free lunch
their is something that must be
responsible for the change
in these
philosophy
and that's something i will colin give a
pool
well i will call it the porch
next lecture
when we do is newton's laws we will
introduce the work force
today we were all the deal with the
words
and push
photo must be
a pull
or the porch
imagine
that is a turntable
and you are
sitting
here on the turntable on a chair
it's going around with angular
velocity
when they are
and you distance to the center
let's say it's that lar
distinguished chair
and you must experience that is
non-negotiable
uh... centrifugal acceleration
you'll see
which is only a guess korea times are
where do you get it wrong
but if you see if you were cps bolted to
the
buddha turntable
then you'll feel push
in your back
for you sitting on the scene you go
around
annual fuel
the seat is pushing you in your back
and so you feel eight
let's give the push
yeah okay i can get this
report from now
so you'll feel
and bush
in your back
that pushed apparently is necessary
forty acceleration
alternatively
suppose you had in front of you a stick
you're not sitting on a
chair you don't get a push poll go back
if you hold onto
istic
now you can go around by holding onto
his stick
now mystic is pouring on you
in the same direction
so now you would say uh-huh someone is
boring
whether that is the poor whether it is
the porch
one of the either one of the two is
necessary for you
go-around
in that circle
on that timetable was that
constants
speak
not a classic question comes up
which we often ask to people who have no
scientific background
if you want to go around like this
and something is either pushing on you
are supporting him to make this possible
supposed to talk that push
i'll hold or sell them
the poor is gone
what is now the motion
off the person who was sitting on the
term table
and many non scientists say
well it will be like this
that sort of which intuition says you go
around in a circle
and all of a sudden you no longer have
the poor the porch
go-around inspiron obviously
the case
what will happen is
if you have at this moment in time
able off-setting
in his direction
and you take the poor to push out
you will sparks flying off in that
direction
and depending upon whether his gratitude
no gravity
immediate change
but if this were
if there were no gravity would just
continue to go
along that line and you would not make
he's crazy spiral motion
appear disk
which weevil rotates and at the end
edge of the disc here we have a little
bowl and the bullets attached to that
this christmas tree
nowadays is vertical
so this is going to go around and loss
it it may have
and we have a string
and strings attached to this bull
and the whole thing is going around
to have one moment in time
it hasn't lost a great
like so
and therefore there must be
non-negotiable
untypical acceleration
which magnitude
is only task we are
or if you want to
these cria divided by our
nala
i cut its and that's like taking a wait
to push and the pool
destroying that you have here
is providing the pool on this bull
his ball is feeling
purple from the street and that's
provided with the center of the
collection tration
the strength
and the pool
is gone
any object
takeoff
and if they were gravity here as it is
in print six one hundred
it would become a parabola and it would
end up here
it however
i cut the bold
exactly when it comes to your but not
the baltic upstream then of course
it will fly
stray doc
gravity quick act on it will come to a
whole and it will come back
so we would then go
along a straight line
but you would clearly see them
that is not going to do with many people
think
that it would start to stroll around
disgorged
and comes back
let's look at that's we have it here
view is that boldest ring is behind here
you cannot see
the string
i will rotate it three
lately to pick up a little
speed
the knife that you can see either is
behind here
and i
push the nice thing to do with exactly
here
cups the extreme
and option
ready for this
you sure you're ready
well zero
was very high so you see
nothing like this
it simply
continued on in the direction that it
was going
wasn't going into a probably cause i was
shooting it
straight up
the strength
forums to connection
between the rotating disc and the bowl
and therefore
the pool
is responsible for dan
so typically television
that's not think about
planets
plez go around to some
there's no string
so who is pushing
who was calling
what is clear
but it must be gravity it must be the
sun
that is boring
planets
now i realize that the orbital planets
i'm not nicely circular so it's not
really a uniform circular motion
we will be a resort it's
in great detail
in a few weeks circular orbits
and that the court dates
let's just assume for simplicity now
that the
orbits art roughly
circular just to
got a little bit or
feeling for it and you can look up now
in your
which i did for you
even in your
preliminary version you can look up
lofty
me distance of the planet is to give
some
and you can look up what the
period is the time to go around to sell
the time to go around the sun
is not the same fall planets the planets
are not attached to a turntable
anywhere any personal matter on cable
would go around in the same amount of
time you know that's not true for
planets
it takes
the or if he had to go around
thus undertake jupiter twelve used to go
around to don't make a mistake to think
that only got is the same for planets
that's not
so i look up
the distance
mean distance to the east
various
planets
and you see that here in
millions
of qantas
note is that mercury
is about one hundred times closer
simply told by the way this is on the
web so don't copy paste you'll find is
only a two one home page
then i can are looked up how many you to
take to go around the sun twelve years
with jupiter
one year from europe
and looked up all the other pavilions
then since i know the periods i can
calculate omega on the guys stood by
divided by t
so i know it may not
and then i take omega square
fine-tuning distance to the sun
and this is of course
center catholics relation
for the planet's experience this into
the public celebration
in some crazy units which will cares
about the unity
and noted that mercury
which is from the times closer than
pluto
has ended
center to collect celebration which east
penn thousand times larger
and pluto
hundred times closer has a ten thousand
times larger
untypical acceleration
so what i did walls
i thought of this database untypical
deceleration
verses demeaned
distance to the son and i get that on
log law paper
what immediately
strikes
it's very striking is
at all these points i've done for the
planets
they form a straight line
and so
what is the slope of that line
well-lit tried various folks
and i found
at the slope
is very very close
minus two lb
here is a slope
minus two
and
over ladies
and notice that the fifties absolutely
storming
therefore you cannot escape
the conclusion
that deep center of the lic celebration
rich is the result of gravity
falls off
as one of our squid
a dreary for students often in
physics as the one ovr scramble
and therefore the affect of gravity
itself
must
go down
which are square
so if you are
on the times put it away
brutal compared to mercury
gravitational
the acne said typical acceleration which
is due to gravity ten thousand times
more
and we will learn a lot of our gratitude
in the future
you'll just need to come out
if you talk to some away
it would be like cutting the string
that provides the pool
in that case which you would see
is that the planets with just a call
a straight line
they would continue to grow
they wouldn't have anything to
pull on them anymore
now
let's look at
object that we're going to rotate
uh... i had a glass tool
that i want to rotate and in the glass
to
a mother
the blast occurs very small
i had he had a glass tube
here's a marble
i'm going to rotated in this direction
davis amanda velocity omega about an
axis perpendicular to the blackboard
solely
the marble yet
has a velocity
like so at this moment in time
but it's a very small glass tube
and a bottle is a very small
the glass
cannot push on the marble
nor can the glass
pull on the market
not a marble gets desperate because the
marble
needs
basin typically tell a racially
in this direction in order
to go around like this
but there is nothing to provide that
some typical acceleration
sort of marble
is doing exactly saying that the planets
would do if you take this on the way
the marble continues to go
in the direction that it was going
so by the time
that's deep
toby's here
marvelous here
by the time that the two piece here
marble is there
with a marble finds its way
to the edge
and that's of course
the basic idea
centrifuge
my grandmother i have always
she was a great lady and she had such
fantastic ideas i remember
when she
made lettuce
we have no good way o'brien the lettuce
and i would take the lead us in
go like this
paper towel
she had unethical for us
she took a color
and of course for civil
we would watch the lettuce
that goes without saying
i would wash it once
my grandmother would wash it
three times that's what you have
grandmother sport
dot com
the medicine we're also very fondled
spinach
at some students
we would wash it
with the spinach
then she would take something to cover
it up
maybe some saran wrap was something else
would go over it
rubber bands
plummet
and now what she's going to do she's
going to swing it around and now
they water is like these
the water will work its way to the edge
but they'll holes
that will come out
isn't cheap either
okay i'll give you a demonstration
it carefully
could you make it
tomorrow on your lecture notes
but i want to show you the the basic
idea behind it is very interesting
she would go out to do it is outside by
the way
but that i had no or sold with here
then
visit the weight
you drive
i lost my magnetic strawberry that's a
detail
process
you end up with
you end up with dr
and clean
let us
these eight oh one at work
and it is clearly an early version
the centrifuge
now my grandmother's methods very
tragically
has been replaced lately
we something that you can buy
crate and barrel
we have it here
it is very boring
it's very decadence
with the seventeen-year all you do it
zero tapes
you drive since the centrifuge this this
is actually a high-tech version
of the much more
selfish to katie
invention of my grandmother
and is no end nearly as exciting
the case
of romance that really over
but that's the way it goes
i'm not going to make
the connection
between rotation on the one hand
and some typical x acceleration
on the other
i'm going to make
the connection between some typical
acceleration
proceed gravity
the way you
that you
received
gratitude
i'm going to put you in various
positions and then ask you
what evacuee
already i'm going to create artificial
gravity for you
and let's first do it as follows
high-priced
have you on a string
anyway
like this
and i ask you
do you feel a push or pull
and use it back
i feel
a full
and if you look cool in this direction
so now i ask you out
in what direction
do you perceive gravity
i think i'm crazy
you're right in that case but
nevertheless
usaid credited
direction
direction as the pool
okay so far so good
so now i'm going to put you in
after spending on the floor
and i say to you do you feel apportion
rupal
and you say yeah i'd feel a bush
i_q_ to push from the floor up
so i say
in what direction do you
receive medicaid
usage wet
como dont be boring
gravity
but in this election
norris
both cases you tell me
that gravity
is always in the opposite direction
appeal you poor you push
now
i'm going to be a little
rough on you
now i'm going to swing you around on the
street
just as if you were an apple
and i'm going to do this with you
and you're at the end of the apple
you idea not at the end to the end of
the street lined up
so there you are
and i say
do you feel a push or pull
and say yeah i do by bureau kant
finally win the election
i feel a pool
in this direction
so now i say to you
people direction do you perceive gravity
and you say walking the opposite
direction as pool
from now
you proceed gratitude
in this direction
which is very real for you
now in this particular case
since
the direction
changes all the time syntax will you
around
europe was good
disney like hell but that's a detail
you will proceed gravity in this
election and you were here
and when you were here we will proceed
gratitude
in that that action
for your pussy gravity
the direction which is all polishing the
pole in the fast i wrote a few
destroyed it will be the pool
and therefore the stronger will be
your received
gravity
a carpenter
which was a plot line
and the carpenter would just hold the
plot one like this
deploys in this direction
and sort of carpenter says
okay proceed gravity is in that
direction
the carpet that happens to be right in
this case credit is in this direction
but it's the same idea
plumb line is being used to find
that iraq should
of gratitude
think of this as being a block
finds
to define the direction
gratitude
now
you're in outer space
you're going to play captain kirk
and urinate space station
and there is no gravity
so
we're going to make some gratitude for
your we're going to create some
artificial gravity
so that gives me you were
space station it's a big real
radius of about two hundred meters
and we'll make it very fancy for you
will make some corridors
like here
make it very interesting
space station
like so
an excel
and this
is rotating around
which angular
philosophy on me
you here
you know you are
you go around
therefore
non-negotiable
going around was a certain
velocity g
use the equals only gower
and therefore will require
some typical acceleration but towards
the center
that is non-negotiable
where do you get it wrong
before this is you afford
is pushing on you
symbol of that just like to force
pushing only now
this floor is pushing there's nothing
wrong with that i don't fall over
and so i think anew
in what direction do you perceive
gravity
and you say this is the direction
identity
which is as well
held for you is it can be
someone else
is standing here
what do you think that person will think
if i ask that person what is the
direction of gratitude
exactly
radially outwards
opposing
on the floor
so we could know what calculates how
fast we have to locate this spaceship
too many
the gravitational acceleration on earth
which is nine point eight meters per
second square
that's cool that tends to run at all
so we want people walk around in this
corridor
to have
an acceleration only caste creed all act
which is about ten
omega squared is about all point one
filmmaker
is about all corn three
radiance
a second
and so
the periods to go around
is about to buy
divided by
omigod and that is about
twenty seconds
and attend gentle
speech
that value from haiti
which is on the car
we're going to pull three
until hundreds would be about thirty
meters per second
just to give you
an idea for these numbers which i
by no means
so ridiculous
was interesting
proces gravity and this and therefore
the
such a catholic celebration
is zero here
there's nothing
there's nobody could
and so that may be a good place for you
to
if you're sleeping quarters
now comes an interesting question
you can walk around here without any
problem
walk into these spokes
so when you were here
would you then
walk
sports you were sleeping quarters
i'm standing here
at first ask you in what direction is
credited
annual stable gravity is in this
direction
can you know what
who you sleeping quarters
and what's the answer
you cannot walk up against gravity
will be like asking you to walk through
the ceiling
how do you do that an elevator
or staircase that's fine
because then you get to push from the
stairs when you step on the status so
you could have the staircase here and
that's the way dispersant could go
if you cannot simply walk here
because gravity
is always in this direction
now that's suppose
you are to sleeping quarters
and you wake up in the morning
you decide to go back to you in this
direction with this interaction with his
erection of epic doesn't matter
could you do that
despite
just going into this
corridor
slowly carefully starting
what happened
fly out
will be suicide
because the moment that you are here
already you have maybe not a very large
gravity
gravitational
experience but already is beginning to
grow old you define what you are
the stronger they will be by the time
you were here
is ten meters per second square remember
we had
ten meters per second square because we
wanted to mimic
and so you literally crashes like
falling into a shaft
jumping into a shack it's not quite the
same
because you start off with no pool and
you
moment you start going oliver situation
gets out of hand
and indeed
it would slam so you can use the same
elevator
you can use the same staircase is
nothing wrong with it
suppose
i have politically
which has very very
small particles in it
extremely easily small
so small and solar lights
that they will not
sink to the ball
so you always see
court
milky type
here is that too
which has these fine particles no
and the two of the sitting there
and the light of the liquid is obviously
like this
al that's obvious because gravity
if you desire action
and sort of surface of a liquid is
always perpendicular to gravity
you see here
two glasses was war
surfaces perpendicular
now
i'm going to wrote a piece
about this there's access going round
like this
and i'm going to rotate it was an
angular velocity amigo
this is an interesting are
therefore
there is now
some typical acceleration in this
direction
and so the particles now
say aha
gravity
is in this direction
this side of the blouse and the next
week
washing in this direction to provide
this into the collection elation
so if you ask him whereas gravity
they will say credit he's there
gravitational
affect can be so much stronger than this
one
if you can't forget the swan you'll see
that in a minute you can completely
forget this one
and sort of a critical state
i'm going to be perpendicular heredity
and soda liquids
we'll go like this
while it rotates around
ludicrous in these tilted too
will be critical
but not only that
the particles
that i hear experience now
wii stronger gravity than they did
before
so i have made them
heavier they no longer like particles
there heavy particles
and bought two heavy particles there
they have no problems
in making its who decides the reason why
the like particles
couldn't hole in the first place
has to do with the fact
that the molecules although the creeks
due to their temperature had a chaotic
motion
recall that the film or education
and these molecules
would interact with these very small and
light particles total like particles
would never make it to the bottom
the fell more education all of the
liquid is the same temperature doesn't
change
but the particles have become way way
every year
and sort of particles now
go in the direction of gravity
which is here
and what you will see if these particles
are white
you will see
whites precipitation there and the
liquid
real become
and that is something
that i would like to demonstrate to you
but before i do that i want to give you
some numbers
you know we have
households simple nothing special
centrifuge that he wasn't any report
centrifuge that we have
has a
rpm
purchased six thirty six hundred rpm
perfect it on the rpm
translates into a frequency
of sixty
grits
so it goes around
long skin one-sixteenth of a second
omega
to fire
contact
is therefore
roughly three hundred sixty
radians per sec
three hundred sixty ratings
if we assume that the radius is uh...
maybe spends fifteen centimetres
whatever let's take a refusal fifteen
centimetres
and we can calculate now
walkie
some typical acceleration is
and it's a typical acceleration in
you've seen
which is only just create or
is then roughly
about
twenty thousands
second squeaked
twenty
thousand
uterus
per second squid
thousands
times the gravitational acceleration
it means that these particles experience
gravity which is food thousand times
former
if i don't want it
and so
they will go to the site here
but the glass itself is also two
thousand times having
and therefore the glass can easily break
so when you design a centrifuge like
that
you have to really think
that through very carefully
that the pieces that in there
flying apart
i have a few more
in which i have dissolved some
table salt
steam table salt if you use in the
kitchen
when you preparing food
financials
here i have waller
in which all right
dissolved some
so from nitrate
it states nasty stuff
i warn your for if you have to be very
careful
because if you get the stuff on your
hands
it burned for your hands very quickly
without your realizing it and you end up
with him
very black spots really eats away
burnt-out uski people poured it on wards
and then the warts they think fall off
probably do after eleven p fingernail
sinful
so i have here still polite rate than
they are here
sodium chloride
hai
makes the tool
so i got
table salt sodium chloride
facility nitrates
sodium
nitrates
postal worker rights
and this
very small white particles
and you will see that the bequeathed
milky instantaneously almost becomes
like
like yogurt as you'll see
and so i want to
showed up to you
i have your these two
last week this is the
table salt and this is the
still for marquerite
and that makes them
open see this
united two glasses
when i mix them
instantaneously you get new
what happened tasting book
just you know
you can leave this
for hours and hours and hours
it will be a state like that very small
particles
still purple right
in here
so now we're going to put this
centrifuge
i have to
fourteen in a very small two
i'll show you this mold to no way that i
can put it in without making a mess
uses small two
and so what i will do itself first put
it in a
small beaker
and then from the small beaker
i will transfer at some of it
through these
when you put it in a centrifuge
the force on this
glasses so high
that you must always make sure that you
don't think there's a lot of talk that
you fill with water on the other side
otherwise the thing begins to shake like
crazy it's like you're
utenti shoes when you drive the towels
if they are not the equally distributed
it begins to make
very obscene sounds and starts to move
the same thing will happen here
so you just have to take my word for it
that we have put on the other side
just some more
to balance it out
so here is now
yogurts
and on the other side
is plain water and we'll just let it sit
there for a while
and we will return to that
i mentioned already your centrifuge for
you close
that is the way that you can drive you
close
that is the same way
that my grandmother right the lettuce
what it will go
circumference
a household
centrifuge for your call smokies rewrote
a twelve hundred
revolutions per minute
eveready is maybe two fifteen
centimetres
which will give you a center for public
celebration
of two hundred times
two hundred times
gravitational acceleration
so your clothes
experience
gravity which is two hundred times
stronger
and therefore you closer to home the
times heavier
and therefore your clothes can
apart and we've all seen that people put
in stopping in
centrifuged
and when you take it out you
disappointed because export that's
because of three men this gravity that
you have
expose them to
many times when i take my shirts out
haha but pentagon that's because the
force
why shouldn't use that word
the gravitational
effect on the bucklands is
enormous
they just get ripped off
now i want to revisit
the situation
that you are
on the end of my strength
i'm going to show you around
earlier i swirled around like this
you didn't like it
and i don't blame you because you've got
busy
now i'm going to rotate
you like this
you may like it better
and so
whether you like it or not
i'm going to throw your arms
and uni wire
is it the circle
there's a string
you were here
use the string
and there you are
you have a certain velocity
the velocity
this direction
and there is a certain
distance to the center
and so
you need to certain
some typical acceleration
go-around
in that car
so unique some typical acceleration
agency
which is
you can take the script provided by our
if you like that into the magnitude of
that
now follow me
very closely
just imagine
that this number
happens to be exactly nine-point eight
michael we do that
where
is this person
going to get
the push for the pool from
some typical acceleration
does the string have to put on it
because there's always gravity
and gravity gives you an acceleration of
nine point eight meters per second
square
the strengths estelle block i don't have
to do anything
medicaid provides me
raised in nine point eight
meters per second square
i require
now
i'm going to swing you
faster
so he will go up
and sodas and typical acceleration will
go up
history will say aha aha
i'm going to pull them out
on this person
because the gravitational acceleration
alone is not enough
i need some extra pool
substring is going to fight them
and pour on you
and i say all their in what direction is
gravity
and you say
gravity
is in this direction
wide because you feel the string is
pouring on you
in this direction
so you experience gratitude there
now comes the question
how real is this
very real
it is so real
that if i took eight
bucket of water
instead of you
and here is the bucket of water
i attached
buckets
icing it around
and isolated around such
that the sentimental acceleration
is substantially larger than nine point
eight
the string is definitely going to pull
so if you are the water
and i asked you where strategy you would
say the gravitational directions this
direction
and soda water will say okay fine
and it will be my separate
and i want to go into direction
but what i can go in that direction
soldiers state
so i could swing this thing around
if i do which fast enough
so fast
that the acceleration
at this point here
must be larger than nine point eight
the water will stay up
well the bucket is upside down
how far east how should i rotated
let's put in some simple numbers i have
here
his pockets
and let's say that this is about one
leader
prompt numbers off
is about one leader
and i want
this great ovr
i want that to be
larger
then nine point eight lectures call two
ten
but it means dvd has to be larger then
about three point two meters per second
the time to go around
is to pyaar
provided by this philosophy
so it is time to go around that in has
to be
has to be less than two seconds
if i swing is around in less than two
seconds i would be ok now i realize that
the speech
move this thing around is not constant
everywhere that's very difficult to do
that because of gratitude but it's close
enough to get an idea
so if i will take this
plaster
then in two seconds
when the bucket is upside down
it physics works the water should not
fallout
so let us filled this with war
was nervous about this
uh... let's first look at the centrifuge
we have to see whether the centrifuge
has done its job
let's look at
what these two
i think it was to come before
allah
very clear is not equipped and you see
the white stuff here on the side
not so easy for you to see really
lands on the year
maybe some of you can see some white
stuff
but it's no longer milk
may be a clear liquids
you see some white stuff here
it's also on the side you can actually
see it here
you see the white stuff
because this was a directional gravity
so it ended up here and some here
was completely
he'd like stuff
so that's the way
you can
separates the
silver chloride
and now we come through these daredevils
daredevil tricks per month
we're going to see
ricans fall the water
and make the water think that that it is
not in this direction but in this
direction
are you doing the right thing there
i don't believe it all
okay
every got
used to do what it is completely full
and noticed that i go around
substantially faster thirty two-cent
and the water when its a bear just think
the gravity is force deceiving
physics works novel before
someone to try it
i think you can do it
popped right
west case it will be a disaster
yepsen eucalyptus before you do it
richard about
out of the way
the first three of the little
and don't hold it too close to you
because i don't want to get hurt
largest ring larger larger
may get some feel for it now
it very good
