Dr. Pawluk (00:02):
Okay. I'm Dr. Pawluk. This video is about
what a Pulsed Magnetic Field is. So what is
a Pulsed Magnetic Field? I'm the author of
the book "Power Tools For Health". How Pulsed
Magnetic Field or PEMS help you? So PEMF stands
for Pulsed Magnetic Field. Now the earth is
a involved in a sea of electromagnetism. The
sun radiates against the planet continuously.
That radiation would normally basically stop
life being able to happen on the planet itself.
So here's the planet. Here's the sun, there's
the radiation. The earth has its own magnetic
field, and that magnetic field is compressed
on the front because of the radiation. So
it's indented by the sun. Otherwise the magnetic
field of the earth would be pretty large because
of that effect of the, uh, radiation from
the sun. The radiation basically bends around
the magnetic field that the earth produces.
So this is the front of it, and this is the
tail of it in behind the earth. And there
is our tiny little earth itself.
Dr. Pawluk (01:28):
Now there are four forces of nature. The strong
force, which is the force of the nuclear,
attraction, a weak force, electromagnetism
and gravity. The electromagnetic force is
also called the Lawrence force. It acts between
charged particles. The greater the charge,
the greater the force. Like gravity this force
can be felt from an infinite distance. The
electromagnetic force consists of two parts,
the electric force part and the magnetic force
part. The two are components of the same force.
They're inseparable. Electric charges influence
each other. And once set in motion, they show
the magnetic force.
Dr. Pawluk (02:19):
The electromagnetic force also has particles
that create a magnetic field around them as
they move. So the electric particles in the
universe which includes basic atoms, create
a magnetic field around them as they are in
motion. When electrons zoom through a wire,
the wire becomes magnetic. Electromagnectic
force is responsible for friction, elasticity,
the normal force of things, push and pull
of things, and the force holding solids together
in a given shape. Now the normal force that
keeps a book on top of a table instead of
pulling the book through to the ground, it
stays on the table because the electrons and
the tables, atoms repel the electrons in the
books atoms. So the electric magnetic forces
around us all the time, whether we are fully
appreciative of it or not.
Dr. Pawluk (03:18):
So there are two types of magnetic fields
static or stationary or permanent magnetic
fields. They're like say the fridge magnets
or horseshoe magnets or bar magnets. And then
there are time varying or frequency or pulse
magnetic fields. Time-varying means that the
field changes over time. That then can be
described as a frequency, which we'll get
into in a second. Static stationary or permanent
magnets include shoe inserts, little disc
magnets, even electric necklaces and bracelets.
This is a typical bar magnet and these are
iron filings and you can see how the iron
filings show you what the magnetic field is
like. Basically the magnetic field around
a bar magnet is continuous. We can't see it
off the slide or off the picture, but they
would, if they could, they'd bend all the
way around it and come back to the other side.
Okay. That's what a standard magnetic field
would look like, even with a static magnet
or a bar magnet.
Dr. Pawluk (04:27):
Now, pulsed magnetic fields are different.
Pulsed magnetic fields are produced by a current
flowing through a wire. So this is a wire
carrying a current. I stands for current and
basically the current is flowing into the
wire and we separate the two wires into a
coil. It goes around basically the current
keeps going around the wire and it comes back
and goes back from where it came to close
the loop. Okay. As current flows through the
wire, a magnetic field is generated. This
magnetic field is generated according to the
right hand rule. So basically with a right
hand rule, the magnetic field lines encircle
the wire. So if you take the right hand and
you take the hand and put it over a wire conducting
current, even a shielded wire conducting current,
the currents flowing in the direction of the
thumb and the fingers wrap around the wire.
And that's what happens to the magnetic field.
You could see the magnetic field circles around
that. Just like the thumb, the fingers would
around the hand. they produce a basically
continuous magnetic field all the way around
space, whether it's an object or through space
itself.
Dr. Pawluk (05:49):
Now this is a depiction of a moving magnetic
field. Normally the field would progress down
the wire and as the field goes through the
wire, it produces out a perpendicular magnetic
field. So this is the electrical field, the
blue, and this is the magnetic field is produced
simultaneously. As that current flows down
and becomes a negative in polarity, it produces
a magnetic field opposite it in the other
direction and so on. So the same thing keeps
happening and we'll show you a motion description
of this in one second. Now, magnetic fields
go through, go right through the body. Like
it was air and other ones, they go through
air. Air does not block a magnetic field.
The body is like air to a magnetic field.
It does not stop it in the body. If the wave
legs are long enough, so magnetic fields go
right through the body, like it didn't even
exist.
Dr. Pawluk (07:06):
Wavelengths are determined based on the frequency
of the magnetic field. So at a hundred megahertz
as a frequencythe magnetic field length is
about equal to the length of a human body.
It's about six feet long. Once you get below
a hundred Hertz, a hundred megahertz, once
you get to say 50 megahertz, the wavelengths
becomes even longer at 10 Hertz, 10 cycles
per second. The wavelengths are miles and
miles long. So basically they do not stay
in the body very high frequency magnetic fields
like gigahertz, um, which you'd see in microwaves
are extremely short. And because they're extremely
short, they don't pass through the body. They
stay in the body, they get absorbed by the
body. Essentially.
Dr. Pawluk (08:01):
This is a depiction of a magnetic field 
in air so what happens is the magnetic field
goes in air, it's just passing on through
air. But if you put a body in front of it,
like in this case a head, it will continue
to pass through the head as if it wasn't even
there. So it goes right on through. So you're
stimulating the tissues in the body with the
magnetic field as it's passing on through
the body. Now when you change the configuration
of magnet, say you put two magnetic coils
together and you stimulate them at the same
time, then basically you're producing a magnetic
field that's moving, constantly moving in
various shapes and configurations based on
the shape of the magnet. And then this case,
it's going right through the body again. I'll
show you a good example of how a magnetic
field passes into the body.
Dr. Pawluk (09:05):
I'll demonstrate to you that when I put this
on the back of the chair and lean back against
the chair, okay, your body will hold it there,
here, that it's going right through your body.
Wow.
Dr. Pawluk (09:19):
So, as I said, magnetic fields pass completely
through the body. We rely on that action to
be able to treat the entire body. If we get
a magnetic field that's strong enough, then
it'll, as it passes through, it'll stimulate
all the tissues and functions in the body.
If the magnetic field intensity is correct.
Now, magnetic waves are described in terms
of frequency, which the term we use is hertz
or they're described in terms of pulse rate
or repetition rate or or PPS. A Hertz and
PPS are often used synonymously and that's
not right they're really not exactly the same.
And then we should be talking about a wave
forms.
Dr. Pawluk (10:05):
Now in terms of wave forms, if you drop a
stone or something falls into water. You'll
see the waves propagating, if you will, from
the center of where the waves begin. So you
see a series of wave actions and usually you
have a crest and then you have a, like a trough,
and then you have another crest, another trough
and so on. As the wave moves on, measuring
the wavelength you measure from crest to crest.
That's also the way you measure Hertz, which
is cycle per second. So from crest to crest
is one cycle. And then you measure the number
of crests over a period of time and that gives
you the cycles per second or Hertz.
Dr. Pawluk (10:51):
This is an example of different types of waves.
So this is a sinusoidal wave and this is like
the zero line in the middle here. So passes
through those positive here and it turns negative
here. This is a square wave, again, passing
through the middle. This is a triangular wave
and this is what's called a Sawtooth wave.
And there are many other examples of different
wave forms, but these are some typical wave
forms. Now this is a pulsed system, the PEMF
120 produces a very intense pulse and then
it drops off, dies off. But it's this pulse,
this strong upward pulse that determines the
action of the magnetic field. So a PEMF 120
coil or high intensity magnetic pulse system.
There, the repetition rate, the rate at which
these things pop is determined by the pulse
rate or the repetition rate. This is a typical
sinusoidal wave system and you can see across
us through the midline angle goes from positive
to negative, and that is described as the
classical definition of frequency or hertz.
Dr. Pawluk (12:05):
Now, magnetic fields lose their intensity
as they travel away from the coils, from the
applicators, based on the laws of physics,
it's called the inverse square law, or the
inverse cube law. Inverse cube law applies
to a volume measuring the magnetic field in
a volume, whereas the inverse square law would
tell you what the magnetic field is at a point
away from the coil. As I mentioned, magnetic
fields drop off an intensity very rapidly
as you move away from the emitter. So in this
area you'll see the intensity of these different
field lines. So this top line, that top line
there is a thousand Hertz, a thousand Gauss
rather. So it's a hundred milli Tesla. Now
this is at one centimeter away from the coil.
So at one centimeter it's a thousand Gauss
or a hundred milli Tesla, but at one centimeter,
that magnetic field has already dropped off
by about 75%.
Dr. Pawluk (13:05):
So it's about 24 milli Tesla and it continues
to drop off extraordinarily rapidly so that
by the time you reach about 10 centimeters,
um, which is about five inches, you've lost
almost all of your magnetic field. Again,
extremely rapid drop off in the magnetic field.
So a thousand Gauss at about one inch into
the body would be approximately seven or eight
or eight milli Tesla going from a thousand
down to seven or eight milli Tesla. This is
very important when we consider where we want
to treat in the body and what magnetic field
intensity you need to start with to get the
most action in the tissues. This slide is
busy but this slide tells you what the intensity
measurements are. So one Tesla. Tesla's are
typically measured for MRI machines which
are extremely high intensity, but one Tesla
equals ten thousand gauss. One Gauss is 0.1
milli Tesla or 100 micro Tesla one milli Tesla
is about 0.001 Tesla and one milli Tesla equals
10 Gauss, one micro Tesla equals about 0.01
gauss, very tiny fraction of what a Tesla
is.
Dr. Pawluk (14:26):
So it's, it's more than, it's a billion, basically
a billionth of a Tesla. The earth itself has
a magnetic field intensity of around 0.5 gauss
or 50 micro Tesla or 0.05 milli Tesla. So
it's a half a gauss. On average. It varies
a little bit around the planet, but basically
it averages out to about half a gauss, the
body's own magnetic fields and the body produces
its own magnetic fields by all the electrical
activity in the body. The electromagnetism
of the body and the body's magnetic magnetic
fields are extraordinarily weak down to about
what we call nano Tesla or Pico Tesla. So
even much smaller than micro Tesla static
magnets typically are measuring anywhere between
say one Gauss and a a thousand or 5,000 gauss,
like one to 200 milli Tesla. So depending
on the strength of the magnet that you are
looking at now, intensity matters.
Dr. Pawluk (15:24):
The intensity of the magnetic field matters.
As I mentioned, the magnetic field by based
on the universe square law shows that the
magnetic field drops off extraordinary rapidly.
Now there's a video on my website, drpawluk.com
on intensity matters. You can search for it
on the search box and just type in intensity
matters and you'll get to the video. That
video talks about these issues again. Now
the effects of magnetic fields on the body
or based on Faraday's law Faraday developed
his laws on electromagnetism back in the 1800's
basically Faraday's law says that time varying.
So that was magnetic fields that are in motion
induce an electrical field whose magnitude
is proportional to its rate of change. So
the monitor charge produced in the body is
dependent on the rate of change of the magnetic
field and that is based on something called
dB/dt. so here's how it looks.
Dr. Pawluk (16:27):
So this is the intensity of a magnetic field
in Tesla and this is time. So in this case
is milliseconds, but if you take every wave
form produced by a magnetic field is going
to take time to reach from its base to its
peak. So base to peak and then it takes time
to do that. So if you divide the intensity
that change from zero to the peak divided
by the change, zero to the time that will
give you the dB/dt is measured it usually
in Tesla per second and the dB/dt determines
the amount of charge production in the body,
extremely critical to determine how strong
the magnetic field is and how much energy
or charge you will produce in the body. Now
the other way that you have to think about
magnetic fields too, as I showed you, the
depictions of the coils and how they produce
a field around them and that field then goes
away from moves away from the coil.
Dr. Pawluk (17:31):
Now the magnetic field configuration needs
to be considered. When you purchase a system,
you have to have some understanding of where
the coils are and what the field configuration's
going to be like. So this is an example of
some field configuration. So this is an electromagnet
or a magnet and in this case it's a static
magnet. And the then the field lines around
that circular magnet. If you have a coil with
current flowing through the coil in this direction,
like a spring is going to produce a much more
complicated magnetic field around each of
the wires is where the magnetic field is the
strongest. And then between the wires in the
center between the wires, the magnetic field
will be very strong and it'd be weaker as
you move away from the wires.
Dr. Pawluk (18:21):
This is another depiction with a very tightly
wound spring wire and then how the magnetic
fields are produced there. So the magnetic
fields around this wire will be stronger next
to the wire as well as whatever it happens
to be inside. Most of the time you're not
going to be able to produce something inside
it. But then the field lines go away from
it. This is another depiction based on, on
the cover of my book, another book that I
had written called magnetic therapy. In Eastern
Europe, a review of 30 years of research,
or you could see here, here's an emitter and
on the surface of the emitter, the magnetic
field lines are very tightly packed. As you
move away from the emitter, the field lines
began to separate. When those field lines
began to separate, that's when the magnetic
field becomes weaker. So very strong magnets,
will tend to have very dense magnetic lines,
magnetic field lines.
Dr. Pawluk (19:13):
And again, as you move away from the surface
of the magnet, the magnetic field lines drop-off
based on the inverse square law, and then
they connect with each other. So if you have
a series of magnets or a series of coils,
they begin to interact with each other and,
and begin to add together out in the a distance
away from the magnet. This is a depiction
of how you might be able to treat somebody.
So you have to understand your magnetic configuration.
In this case, you're putting a body in between
a circular magnet. So this person is laying
on a flat bed and this is a circular magnet.
So the magnetic field intensity is going to
be the strongest in the center of the magnet,
but even stronger right next to the coil itself.
Dr. Pawluk (19:57):
This is another depiction of a circular type
magnet where you're laying on top of the magnet.
Again, the field lines are going to be strongest
in the center and the magnet, so this is a
depiction of a whole body magnetic system
with different sets of coils in it and how
this coils produce a magnetic field that moves
away from the surface and as you move away
from the surface, then it feels like it gets
weaker and weaker and weaker. This is an extremely
powerful magnetic system called the Hugo and
basically what you, what you have here in
each of these covers is a big wide loop coil
and there's a pad underneath, which is very,
this is the same basically, so you're having
two of these coils, one on top of the other,
and you could produce an extraordinarily powerful
magnetic field.
Dr. Pawluk (20:44):
This is a depiction of that. In this case,
between those two circular magnets, one above
and one below the person, you have a very
strong intense magnetic field and the field
lines spread out around the edges and basically
come back and rejoin each other so that when
you pulse the magnetic field is basically
pulsing out, pulsing out, pulsing out. Every
time you pulse it so this graphic shows you
how each coil produces a magnetic field that
peaks and then drops off very rapidly according
to the inverse square law. So at approximately,
well half the distance below, it's about a
.75 gauss where the two sets of lines basically
meet each other. But because you're combining
them in this kind of what we call Helmholtz
configuration, you're actually producing a
magnetic field in, in between them, above
of about one and a half times the magnetic
field of either one of these.
Dr. Pawluk (21:50):
So you get a much more powerful magnetic field.
When you combine magnets in this, in this
way, this applies to almost any kind of magnetic
system where you can create what's called
a magnetic sandwich back to Faraday's law.
So a time varying magnetic field induces an
electrical charge. So basically we're producing
every time we, uh, I have a magnetic field
pass through the body, every time, every time
you have a pulse or a frequency passing through
the body, a magnetic field as being a charge
field is being produced by the magnetic field
produces a charge in the body. So as the magnetic
field passes through the body, it induces
charge or energy in the tissues that that
leads basically to all the actions and benefits
of PEMF therapy. So PEMF therapy depends on
charge production within the body by the magnetic
field. This is basically, again, it's Faraday's
law, and then you have to consider the other
factors that are involved in magnetic fields.
Dr. Pawluk (22:50):
So what did we discuss in this video? Number
one, the forces of nature, and that's electromagnetism
and electromagnetism is one of the strongest
forces in the universe. And it basically goes
through the entire breadth and width of the
universe. All matter has electromagnetism
in it all matter. It's always the interaction
of the electrical charges in the tissues,
which is the ions and the minerals and the
molecules of the body and they interact with
each other through electromagnetism. We talked
about the types of magnetic fields, static
and permanent, how a current passing through
a wire produces a pulse magnetic field based
on the right hand rule that magnetic fields
go through the body completely. They do not
stop in the body, did not get used up by the
body. They pass right on through when the
magnetic field frequency, when the wavelengths
are long enough and the wavelengths of microwaves
are too short, they stay in the body.
Dr. Pawluk (23:48):
And that's why the heat the body, that's why
they hate our food and microwave ovens. And
we also talked about frequency and wave forms.
We talked about the inverse square law, how
it drops off extraordinary rapidly as you
move away from the surface of a magnet or
the applicator and a critically important
Faraday's law that determines the fact that
PEMF.s actually work in the body and different
types of ways you can look at magnetic device
configurations, how you design the magnetic
system will determine what the magnetic field
will look like as it moves into the body.
And again, the most important thing is that
PMs induce energy in the body that leads to
all the many PEMF actions and benefits. Okay.
So if you want resources, you can go to drpawluk.com.
You can get the book "Power Tools for Health",
how pulsed magnetic fields help you. We will
be producing a, another uh website called
the PEMF training Academy, which will be populated
over this next year. In addition, if you want
to pause this video, you can take down this
this link based on the con Khanacademy.org
science in their physics area. And they discuss
magnetic forces and magnetic fields and magnetic
field current carrying wire. So this is a
very useful information and it is very basic
instructional information on PEMFs. If you
want to learn more about it.
Dr. Pawluk (25:14):
Thank you for watching. I hope this was informative.
Have a great day. Be well.
