this video is sponsored by brilliant org check the link in the description for a
check the link in the description for a
check the link in the description for a discount on your first subscription hey
discount on your first subscription hey
discount on your first subscription hey guys I’m Nate welcome back to the
guys I’m Nate welcome back to the
guys I’m Nate welcome back to the workshop today we’re going to be taking
workshop today we’re going to be taking
workshop today we’re going to be taking a little bit of a look at ferrofluid
a little bit of a look at ferrofluid
a little bit of a look at ferrofluid that’s a liquid that’s attracted to
that’s a liquid that’s attracted to
that’s a liquid that’s attracted to magnets and make some really cool shapes
magnets and make some really cool shapes
magnets and make some really cool shapes when it’s in a magnetic field the basic
when it’s in a magnetic field the basic
when it’s in a magnetic field the basic recipe for our ferrofluid that we’ll be
recipe for our ferrofluid that we’ll be
recipe for our ferrofluid that we’ll be making today is one that I got from a
making today is one that I got from a
making today is one that I got from a channel called brainiacs 75 they’ve got
channel called brainiacs 75 they’ve got
channel called brainiacs 75 they’ve got a lot of cool videos about ferrofluid so
a lot of cool videos about ferrofluid so
a lot of cool videos about ferrofluid so if you’re interested in seeing more go
if you’re interested in seeing more go
if you’re interested in seeing more go check them out before we start making
check them out before we start making
check them out before we start making our ferrofluid I wanted to talk a little
our ferrofluid I wanted to talk a little
our ferrofluid I wanted to talk a little bit about what it is and why some
bit about what it is and why some
bit about what it is and why some recipes do and don’t work the basic idea
recipes do and don’t work the basic idea
recipes do and don’t work the basic idea of a Ferro fluid is a liquid that’s
of a Ferro fluid is a liquid that’s
of a Ferro fluid is a liquid that’s attracted to a magnetic field this is
attracted to a magnetic field this is
attracted to a magnetic field this is done by suspending a ferrous chemical
done by suspending a ferrous chemical
done by suspending a ferrous chemical inside a liquid base toward properly a
inside a liquid base toward properly a
inside a liquid base toward properly a ferrofluid needs at least three main
ferrofluid needs at least three main
ferrofluid needs at least three main components the first is a magnetic
components the first is a magnetic
components the first is a magnetic powder that can be suspended in the
powder that can be suspended in the
powder that can be suspended in the fluid will be using magnetite a
fluid will be using magnetite a
fluid will be using magnetite a synthetic black iron oxide
once we have our magnetic powder base we
once we have our magnetic powder base we need a fluid to suspend it in and this
need a fluid to suspend it in and this
need a fluid to suspend it in and this is where it can get a little bit tricky
is where it can get a little bit tricky
is where it can get a little bit tricky an issue we quickly run into is that
an issue we quickly run into is that
an issue we quickly run into is that most liquids will not stick to the
most liquids will not stick to the
most liquids will not stick to the microscopically small particles that
microscopically small particles that
microscopically small particles that make up our magnetic powder we may be
make up our magnetic powder we may be
make up our magnetic powder we may be able to get our powder wet but as soon
able to get our powder wet but as soon
able to get our powder wet but as soon as a magnet is introduced all of the
as a magnet is introduced all of the
as a magnet is introduced all of the particles will stick together so closely
particles will stick together so closely
particles will stick together so closely that there’s no longer any space in
that there’s no longer any space in
that there’s no longer any space in between the individual ones for our
between the individual ones for our
between the individual ones for our fluid base let’s see what happens if we
fluid base let’s see what happens if we
fluid base let’s see what happens if we try mixing our powder with plain water
this cup now has a mixture of a little
this cup now has a mixture of a little bit of water and some of our magnetite
bit of water and some of our magnetite
bit of water and some of our magnetite powder you can see that it hasn’t mixed
powder you can see that it hasn’t mixed
powder you can see that it hasn’t mixed in very thoroughly at the bottom there’s
in very thoroughly at the bottom there’s
in very thoroughly at the bottom there’s still sort of a thick goopy paste with a
still sort of a thick goopy paste with a
still sort of a thick goopy paste with a thinner black liquid on top of it now
thinner black liquid on top of it now
thinner black liquid on top of it now this thinner liquid does have our
this thinner liquid does have our
this thinner liquid does have our magnetite suspended through it pretty
magnetite suspended through it pretty
magnetite suspended through it pretty well at this point so you might think
well at this point so you might think
well at this point so you might think hey that should work won’t that be
hey that should work won’t that be
hey that should work won’t that be magnetic well watch what happens when we
magnetic well watch what happens when we
magnetic well watch what happens when we actually put a magnet up against it look
actually put a magnet up against it look
actually put a magnet up against it look at that it squeezes the magnetic powder
at that it squeezes the magnetic powder
at that it squeezes the magnetic powder so much that it just pulls all of it
so much that it just pulls all of it
so much that it just pulls all of it right out of the water you can see we
right out of the water you can see we
right out of the water you can see we are now getting water that’s almost
are now getting water that’s almost
are now getting water that’s almost clear again we’ve just pulled all of the
clear again we’ve just pulled all of the
clear again we’ve just pulled all of the magnet powder right out of there
magnet powder right out of there
magnet powder right out of there it does look kind of cool though you can
it does look kind of cool though you can
it does look kind of cool though you can see all the magnetic powder flowing
see all the magnetic powder flowing
see all the magnetic powder flowing through the water over to the magnet so
through the water over to the magnet so
through the water over to the magnet so the water clearly doesn’t work and that
the water clearly doesn’t work and that
the water clearly doesn’t work and that brings us to the third element that we
brings us to the third element that we
brings us to the third element that we need in our fair fluid and that’s what’s
need in our fair fluid and that’s what’s
need in our fair fluid and that’s what’s called a surfactant the word surfactant
called a surfactant the word surfactant
called a surfactant the word surfactant comes from a combination of the words
comes from a combination of the words
comes from a combination of the words surface active agent a surfactant is
surface active agent a surfactant is
surface active agent a surfactant is something that lowers the surface
something that lowers the surface
something that lowers the surface tension between two substances what
tension between two substances what
tension between two substances what we’re looking for is one that will work
we’re looking for is one that will work
we’re looking for is one that will work as a wetting agent to make sure that our
as a wetting agent to make sure that our
as a wetting agent to make sure that our liquid base will surround every
liquid base will surround every
liquid base will surround every individual particle of our magnetite
individual particle of our magnetite
individual particle of our magnetite powder motor-oil does exactly what we’re
powder motor-oil does exactly what we’re
powder motor-oil does exactly what we’re looking for it’s a liquid oil base with
looking for it’s a liquid oil base with
looking for it’s a liquid oil base with surfactants added to make it stick well
surfactants added to make it stick well
surfactants added to make it stick well to the surface of oil this particular
to the surface of oil this particular
to the surface of oil this particular brand is the same kind that was
brand is the same kind that was
brand is the same kind that was recommended by Brainiac 75 on his
recommended by Brainiac 75 on his
recommended by Brainiac 75 on his channel but I’ve tried it with a couple
channel but I’ve tried it with a couple
channel but I’ve tried it with a couple of other brands of synthetic motor oil
of other brands of synthetic motor oil
of other brands of synthetic motor oil and they seemed to work just as well so
and they seemed to work just as well so
and they seemed to work just as well so now let’s take some of our oil and some
now let’s take some of our oil and some
now let’s take some of our oil and some of our Mack
of our Mack
of our Mack type powder mix them together and see
type powder mix them together and see
type powder mix them together and see what happens and how it’s different from
what happens and how it’s different from
what happens and how it’s different from mixing it with water now we have our
mixing it with water now we have our
mixing it with water now we have our motor oil in the cup let’s add that get
motor oil in the cup let’s add that get
motor oil in the cup let’s add that get up outta to it until it becomes a fairly
up outta to it until it becomes a fairly
up outta to it until it becomes a fairly uniform consistency there we go we now
uniform consistency there we go we now
uniform consistency there we go we now have a fairly thick liquid mixed up and
have a fairly thick liquid mixed up and
have a fairly thick liquid mixed up and that is our Castrol Magnatech oil mixed
that is our Castrol Magnatech oil mixed
that is our Castrol Magnatech oil mixed with our magnetite powder let’s see how
with our magnetite powder let’s see how
with our magnetite powder let’s see how our liquid responds to a magnet there we
our liquid responds to a magnet there we
our liquid responds to a magnet there we go you can see is definitely getting
go you can see is definitely getting
go you can see is definitely getting pulled on to it there and we’re also
pulled on to it there and we’re also
pulled on to it there and we’re also even starting to get a few fun little
even starting to get a few fun little
even starting to get a few fun little shapes forming look at that the walls of
shapes forming look at that the walls of
shapes forming look at that the walls of this cup get coated pretty quickly in
this cup get coated pretty quickly in
this cup get coated pretty quickly in our black paste so to make it easier to
our black paste so to make it easier to
our black paste so to make it easier to see let’s pour our liquid out onto a
see let’s pour our liquid out onto a
see let’s pour our liquid out onto a plate and then see how it reacts to a
plate and then see how it reacts to a
plate and then see how it reacts to a magnet alright let’s move our plate over
magnet alright let’s move our plate over
magnet alright let’s move our plate over our magnet and see how this goes
definitely see your reacting you’re
definitely see your reacting you’re starting to get some of those cool
starting to get some of those cool
starting to get some of those cool little spiky shapes that we’re looking
little spiky shapes that we’re looking
little spiky shapes that we’re looking for from the ferrofluid
for from the ferrofluid
for from the ferrofluid that’s pretty cool
all right now let’s watch what happens
all right now let’s watch what happens if I take the magnet away from the
if I take the magnet away from the
if I take the magnet away from the mixture just kind of puddle back down
mixture just kind of puddle back down
mixture just kind of puddle back down have all our fun little spikes take it
have all our fun little spikes take it
have all our fun little spikes take it away and they all just smooth themselves
away and they all just smooth themselves
away and they all just smooth themselves right out now that’s pretty neat
right out now that’s pretty neat
right out now that’s pretty neat but this ceramic magnet is actually not
but this ceramic magnet is actually not
but this ceramic magnet is actually not all that powerful so let’s see what
all that powerful so let’s see what
all that powerful so let’s see what happens if we use something a little bit
happens if we use something a little bit
happens if we use something a little bit stronger we’ve got four neodymium
stronger we’ve got four neodymium
stronger we’ve got four neodymium magnets all stuck together right here
magnets all stuck together right here
magnets all stuck together right here and this should provide some pretty
and this should provide some pretty
and this should provide some pretty intense power hopefully not too much
intense power hopefully not too much
intense power hopefully not too much power let’s see the result I want to
power let’s see the result I want to
power let’s see the result I want to break my plate either oh boy yeah look
break my plate either oh boy yeah look
break my plate either oh boy yeah look at that it’s so close to the magnetic
at that it’s so close to the magnetic
at that it’s so close to the magnetic field and the magnetic field is so
field and the magnetic field is so
field and the magnetic field is so strong that we’re not getting the normal
strong that we’re not getting the normal
strong that we’re not getting the normal points we’re looking for but we’re just
points we’re looking for but we’re just
points we’re looking for but we’re just getting some interesting plate spots on
getting some interesting plate spots on
getting some interesting plate spots on the most concentrated bits in the magnet
the most concentrated bits in the magnet
the most concentrated bits in the magnet also see this little puddle of oil in
also see this little puddle of oil in
also see this little puddle of oil in the middle that’s what I was talking
the middle that’s what I was talking
the middle that’s what I was talking about by using magnets that are too
about by using magnets that are too
about by using magnets that are too powerful it’s actually squishing our
powerful it’s actually squishing our
powerful it’s actually squishing our magnetic powder together so powerfully
magnetic powder together so powerfully
magnetic powder together so powerfully that it’s squeezing the oil out from in
that it’s squeezing the oil out from in
that it’s squeezing the oil out from in between the particles try and take this
between the particles try and take this
between the particles try and take this magnet off and then back it away so it’s
magnet off and then back it away so it’s
magnet off and then back it away so it’s not quite as close to our magnet powder
not quite as close to our magnet powder
not quite as close to our magnet powder we’ve added two more plates that should
we’ve added two more plates that should
we’ve added two more plates that should keep our magnets a little more separated
keep our magnets a little more separated
keep our magnets a little more separated from our ferrofluid now let’s see how it
from our ferrofluid now let’s see how it
from our ferrofluid now let’s see how it reacts
we’re still getting the four different
we’re still getting the four different concentrated points so our four magnets
concentrated points so our four magnets
concentrated points so our four magnets are clearly not all acting it has one
are clearly not all acting it has one
are clearly not all acting it has one powerful magnet which makes sense there
powerful magnet which makes sense there
powerful magnet which makes sense there we go look at that oh that’s beautiful
those spikes are fantastic as long as I
those spikes are fantastic as long as I keep moving the magnet they sort of keep
keep moving the magnet they sort of keep
keep moving the magnet they sort of keep growing in the magnetic field if I just
growing in the magnetic field if I just
growing in the magnetic field if I just hold the magnet still of course they
hold the magnet still of course they
hold the magnet still of course they don’t move anywhere just to illustrate
don’t move anywhere just to illustrate
don’t move anywhere just to illustrate it it’s only when I’m moving the magnet
it it’s only when I’m moving the magnet
it it’s only when I’m moving the magnet that the fluid is moving with it well
that the fluid is moving with it well
that the fluid is moving with it well that was a pretty powerful magnet now I
that was a pretty powerful magnet now I
that was a pretty powerful magnet now I also have some ultra powerful knives
also have some ultra powerful knives
also have some ultra powerful knives these things are huge and so strong I’m
these things are huge and so strong I’m
these things are huge and so strong I’m afraid it might be too strong and it
afraid it might be too strong and it
afraid it might be too strong and it might just pull the magnetic powder
might just pull the magnetic powder
might just pull the magnetic powder right out of the oil but we got to try
right out of the oil but we got to try
right out of the oil but we got to try it you’d still like fully an inch away
it you’d still like fully an inch away
it you’d still like fully an inch away we’re getting good results though Mike’s
we’re getting good results though Mike’s
we’re getting good results though Mike’s a giant
I look so cool let’s see what happens if
I look so cool let’s see what happens if I pull the magnet away well we’ve got
I pull the magnet away well we’ve got
I pull the magnet away well we’ve got these giant spikes Boop huddled back
these giant spikes Boop huddled back
these giant spikes Boop huddled back down back we got sort of these like
down back we got sort of these like
down back we got sort of these like weird ridges instead of regular spikes
not quite what I had in mind but also
not quite what I had in mind but also kind of neat there we have it our
kind of neat there we have it our
kind of neat there we have it our ferrofluid may not be quite so runny or
ferrofluid may not be quite so runny or
ferrofluid may not be quite so runny or thin as some commercially-available
thin as some commercially-available
thin as some commercially-available ferrofluids but it does respond well to
ferrofluids but it does respond well to
ferrofluids but it does respond well to magnets and we do get those cool points
magnets and we do get those cool points
magnets and we do get those cool points sticking out of it just the way we
sticking out of it just the way we
sticking out of it just the way we wanted to one more test I want to try
wanted to one more test I want to try
wanted to one more test I want to try because I know a lot of you are gonna
because I know a lot of you are gonna
because I know a lot of you are gonna want to see it let’s see what happens if
want to see it let’s see what happens if
want to see it let’s see what happens if we freeze it with liquid nitrogen I have
we freeze it with liquid nitrogen I have
we freeze it with liquid nitrogen I have a prediction and I think the liquid
a prediction and I think the liquid
a prediction and I think the liquid nitrogen is going to freeze the motor
nitrogen is going to freeze the motor
nitrogen is going to freeze the motor oil and it’ll become so rigid that it no
oil and it’ll become so rigid that it no
oil and it’ll become so rigid that it no longer responds to the magnets well
longer responds to the magnets well
longer responds to the magnets well let’s find out now pouring the liquid
let’s find out now pouring the liquid
let’s find out now pouring the liquid nitrogen on just like this would be no
nitrogen on just like this would be no
nitrogen on just like this would be no fun so let’s try and get some good
fun so let’s try and get some good
fun so let’s try and get some good spikes on there and then freeze those so
spikes on there and then freeze those so
spikes on there and then freeze those so if they stay even when we remove the
if they stay even when we remove the
if they stay even when we remove the magnet all right those some good spikes
magnet all right those some good spikes
magnet all right those some good spikes on a safety glasses
hopefully it doesn’t just shatter my
hopefully it doesn’t just shatter my plate it’s a very real possibility I
plate it’s a very real possibility I
plate it’s a very real possibility I understand take away the magnet well I
understand take away the magnet well I
understand take away the magnet well I would say we’ve got some good frozen
would say we’ve got some good frozen
would say we’ve got some good frozen spice it’s actually got a cool you bet
spice it’s actually got a cool you bet
spice it’s actually got a cool you bet anymore to keep it nice and frozen and
anymore to keep it nice and frozen and
anymore to keep it nice and frozen and normally without a magnet these things
normally without a magnet these things
normally without a magnet these things are just gone now I’ve got some frozen
are just gone now I’ve got some frozen
are just gone now I’ve got some frozen motor oil and spike shaped I can poke
motor oil and spike shaped I can poke
motor oil and spike shaped I can poke them now I got some of the unfrozen
them now I got some of the unfrozen
them now I got some of the unfrozen stuff on my magnet that’s a moment there
stuff on my magnet that’s a moment there
stuff on my magnet that’s a moment there you go how to make your very own
you go how to make your very own
you go how to make your very own ferrofluid using magnetite powder and
ferrofluid using magnetite powder and
ferrofluid using magnetite powder and Castrol Magnatech motor oil this stuff
Castrol Magnatech motor oil this stuff
Castrol Magnatech motor oil this stuff is pretty fun to play with although I do
is pretty fun to play with although I do
is pretty fun to play with although I do recommend you wear gloves because motor
recommend you wear gloves because motor
recommend you wear gloves because motor oil is designed to stick to stuff and
oil is designed to stick to stuff and
oil is designed to stick to stuff and this stuff is very black in color so if
this stuff is very black in color so if
this stuff is very black in color so if you get any other than hands it’s going
you get any other than hands it’s going
you get any other than hands it’s going to be on your hands and it’s going to
to be on your hands and it’s going to
to be on your hands and it’s going to spread to everything you touch it’s
spread to everything you touch it’s
spread to everything you touch it’s really hard to get off even with soap
really hard to get off even with soap
really hard to get off even with soap and water if you’ve got any ideas on how
and water if you’ve got any ideas on how
and water if you’ve got any ideas on how to make ferrofluid that’s a thinner
to make ferrofluid that’s a thinner
to make ferrofluid that’s a thinner consistency more like the commercially
consistency more like the commercially
consistency more like the commercially available ferrofluid let us know down in
available ferrofluid let us know down in
available ferrofluid let us know down in the comments I would love to try all of
the comments I would love to try all of
the comments I would love to try all of your ideas and if one of them works
your ideas and if one of them works
your ideas and if one of them works we’ll make an updated video showing you
we’ll make an updated video showing you
we’ll make an updated video showing you how to make that kind of ferrofluid and
how to make that kind of ferrofluid and
how to make that kind of ferrofluid and we’ll send you 25 bucks well now we know
we’ll send you 25 bucks well now we know
we’ll send you 25 bucks well now we know that ferrofluid is made from a magnetic
that ferrofluid is made from a magnetic
that ferrofluid is made from a magnetic powder base a liquid base and some kind
powder base a liquid base and some kind
powder base a liquid base and some kind of surfactant motor oil already has a
of surfactant motor oil already has a
of surfactant motor oil already has a liquid base and a surfactant in it so it
liquid base and a surfactant in it so it
liquid base and a surfactant in it so it bonds well to our magnetite powder to
bonds well to our magnetite powder to
bonds well to our magnetite powder to give us a ferrofluid liquid nitrogen
give us a ferrofluid liquid nitrogen
give us a ferrofluid liquid nitrogen we’ll freeze our ferrofluid solid so it
we’ll freeze our ferrofluid solid so it
we’ll freeze our ferrofluid solid so it remains spiky even when we take our
remains spiky even when we take our
remains spiky even when we take our magnets away from it
magnets away from it
magnets away from it if you love these kinds of hands-on
if you love these kinds of hands-on
if you love these kinds of hands-on experiments you’re probably the type who
experiments you’re probably the type who
experiments you’re probably the type who would like to know more about our
would like to know more about our
would like to know more about our sponsor brilliant org brilliant diode
sponsor brilliant org brilliant diode
sponsor brilliant org brilliant diode org is a Math & Science enrichment
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with engaging and interesting problems which helps them understand the concepts
which helps them understand the concepts
which helps them understand the concepts at a more fundamental level the program
at a more fundamental level the program
at a more fundamental level the program is set up so that the problems are
is set up so that the problems are
is set up so that the problems are presented in an engaging and addictive
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interested in what it’s learning it becomes
becomes
becomes easier to understand if you have an
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the king of random calm see you there
the king of random calm see you there your motor oil looks like this in your
your motor oil looks like this in your
your motor oil looks like this in your car get an oil change and talk to him
car get an oil change and talk to him
car get an oil change and talk to him the canopy so that part’s not frozen at
the canopy so that part’s not frozen at
the canopy so that part’s not frozen at all gross
all gross
all gross [Music]
”
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