Lenz's Law

[Daveybhoy111]

Mario's good at physics! who knew?

[yo6ial]

This might be a really nice shock absorber solution...

[masterwolf1212]

@yo6ial Yeah, but then poses the question- would the magnetic field be strong enough to be 'stiff' enough to be a suspension? You could use neodymium magnets. But even still, if its not strong enough, would it require mass amounts of electricity to create a strong enough magnetic field to keep the coil centered?

[yo6ial]

@masterwolf1212 the effect would be usable in the dampening part of the suspension (absorption of energy)

For suspending and dampening a combination between magneto-static and electromagnetic forces might do the trick as energy production and conversion becomes more and more efficient.

The coil could just be suspended by a spring for the moment.

[masterwolf1212]

@yo6ial Yes, that could work. But then nomatter what way of doing things, wouldn't we have to worry about the coil overheating?

[yo6ial]

@masterwolf1212 heat and electricity generated by the coil can be dissipated or recycled.

[ibanezicemaniac]

verrrrnice!!!!!

[MrEnceladus18]

Is there electricity flowing through the copper coil??

[edumation]

@MrEnceladus18 Yes 

[MrEnceladus18]

@edumation ok thx ;)

[lenzslaw12]

@MrEnceladus18 Yea definatley, use flemmings left hand rule

[Bagatronic]

velly interesting.

[irvinmanohar]

"the coil falls fast due to the effect of gravity.." lol..

thx btw..

[superdawg96]

my name a borat

[troyger1]

sounds like a technological BORAT ....

LAMO

[gorgeousdzastr]

great demonstration.

Thanks

[HustlenDreams]

man i wish i had examples like this when i was in school, woulda made it a lot easier to understand and pass chemistry n shyt

[itsandbits1]

If you drop a magnet down the center of a copper tube you get the same effect also. the magnet falls through slowly. You could probably use it for some kind of damping

[MIRACLESHAPN]

really helpful!

[bjtaudio]

You can do this same type of experiment using a loudspeaker too, with the speaker wires open (speaker not connected to anything) if you physically move the cone of the driver rather easily in and out, short circuit the speaker leads of the speaker, then the cone is very stiff and hard to move. If you connect a small torch bulb, you will see it momently light when the cone is moved. If you connect the drive to another driver you will see the other drivers cone move in and out too...

[msdaif]

@bjtaudio

Thank you. Good idea

[bigvic22sti]

hey so if you have constant power to the coils will the coils hover in between the magnets?

[msdaif]

In this set-up, we could not control the power. Moreover, the coil will eventually fall due to gravity.

[googlephi]

@bigvic22sti

According to Earnshaw's Theorem, a DC current cannot maintain levitation. It would be an unstable system, like balancing a bowling ball on the end of a broomstick. You would need a feedback system or rotation to make it work.

[ineedfiles]

when the coil dropped the first time, the magnets weren't trapped. when the wires were closed, the magnets were trapped in the coil had a hard time escaping, so it was slowed, and it produced heat.

if he had put a small bulb on the end of the coil, or a meter, it would have registered.

[msdaif]

Good idea. I'll do that but witha different coil because I need a very smal power lamp.

[ineedfiles]

Let me know!!!

[msdaif]

Sure. You'll be the first. It will take some time because I'm abroad now.

[needleonthevinyl]

Could this law be applied as a replacement to automotive friction brakes?

[msdaif]

Wow! Yes! Currently I am in Japan conducting research in electromagnetism. One of the egineering students has a project which uses Lenz`s Law to replace the mechanical suspension with an electromagnetic system. He actually used the same basic components: coils and magnets.

[chrixthegreat]

Not only can it be used but it already has. This and similar laws are in use in many hybrid cars but have found greatest popularity in use in train cars, roller coasters and in high speed drag-style racers. The fastest car in the world used magnetic breaks rather then friction breaks as the friction ones would disintegrate before slowing the car down.

[UBERKron]

yes, bosch started in early 2000. consumer not understanding is limting use. they are also inneffective at complete stopping. ie there is only braking down to low speeds. still need something for the last 5kph.

[robsterandkadubb]

@needleonthevinyl I think the Lenz's law has been used in electric cars except the energy goes back into recharging the batteries

[Soulrider2012]

@needleonthevinyl A number of roller coasters and other amusement park rides already use this concept for braking. I don't know the implications for scaling it down for automotive use but I'm sure it's been looked in to. My guess would be the system would be to cost prohibitive compared to common hydraulic brake systems.

[Procrastinatathor]

If also you took a battery (or any energy source) and wired it to the coil, would the coil be floating at some point, depending on the volts and amps?

[msdaif]

I assume 2 phenemona:

1. The battery increases the current and so the fall becomes slower.

2. The coil should rotate or vibrate depending on how big is the current because this is the case of a current-carrying conductor in a magnetic field where the force is: F = B x l x i x sin(θ)

where F is the turning force (Newton), B is the magnet`s flux density (Tesla), l is length of coil wire (meter) , i is the coil current (ampere) and θ is the angle between the coil and the magnetic field lines

[bahanchodrandi]

i have a question

if the coil moves with a faster velocity will it slow down as slowly or will it travel a bit faster through the magnet?

i mean more velocity but without any force

[msdaif]

It will sow down

[mrmagnetoman88]

If the coil moves through the magnet with a higher velocity, it causes a higher rate of change of magnetic flux linkage, thus inducing a larger current. This larger induced current sets up a stronger magnetic field which interacts with the magnetic field of the permanent magnet to produce a force on the coil which is directly proportional to the magnitude of the induced current. So the coil slows down even more than it would if it had approached the magnet with a higher velocity.

[040819932939]

how strong and large do the magnets have to be . i have tried this with 2 small but very strong neodynium magnets and i cant get it to work . any suggestions ?

[msdaif]

Neodymiums give best results. However, small magnets achieve the same results.

[claubeee]

Please, where I can buy one assembly equal of this?? thanks!

[xjagermeisterx]

the same effect can be found by dropping a single magnet down a copper tube compared to a similar sized piece of metal dropped down the tube. the piece of metal falls straight through constantly accelerating due to gravity however the magnet falls at a slower velocity due to it inducing an emf into the walls of the copper tube as though the copper tube was a large columnar coil. try it.

[1carlento]

so faraday's law says. The induced emf will oppose any change in magnetic flux linkage

[saturnalia696]

I am kind of confused on this one! I thought this one was physical law#1, Faraday's Law, " A voltage is produced on any conductor in a changing mag- netic field." Physical Law#2, Ampere's and Lenz's law. " Current flowing in a wire produces a magnetic field around the wire". I think this example is referring to physical law #1 (Faraday's Law), not to physical law #2 (Amperes's and- Lenz's Law). I might be wrong!

[IndyR0ck]

COOL!

[KingKenny21]

Aren't the field lines suuposed to be perpendicular to the surface enclosed by the loops? Please explain.

[msdaif]

No, not in this demo. This is not a dc motor. What matters here is that the magnetic field linking the coil is changing

[zookuw]

wow that did make it simple o-o

thanks ^^

but one thing there is no power to that wire right?

[msdaif]

No, there is no power to the coil. Its is induced by the changing magnetic field.

[zookuw]

kk thanks ^^

[truffm]

well, I can understand spending millions on research on the mating habits of mosquitoes, there very interesting, but anyway, lets just agree that one of us is probably correct and neither of us are going to give up our stance on the subject therefore any debate is futile

[TheRealVerbz]

sweet!

finally!!

a genuine person that can agree to disagree!

We have a difference of opinion and that's all.

right on.

[msdaif]

What's the link between research on mosquitoes and Lenz's Law

[truffm]

you dont see it, its a huge link, but ofcorse it is only to do with their mating habbits

[msdaif]

You mean a male's thing in the female's? Hahhhaaa. Funny...

[truffm]

oh yeh i didnt think of it like that, but yeh there are other aspects, such as... erm... uh... okay your right theres absoutely no relation

[TheRealVerbz]

The Searl Effect

watch?v=z8qvSNkiB9M

JohnSearlStory com

[truffm]

um... no, its not the searl effect, its lenz's law, the searl effect is completely unfounded, where as lenz's law... IS THE LAW!!!!!

[TheRealVerbz]

SearlSolution com

[truffm]

yeh yeh, but the point still stands, this method will not work for viable energy production

[TheRealVerbz]

The device shown on youtube won't power anything bigger than LED lights.

The smaller versions would need to exceed 600 rpm in order to generate enough electricity to power a home or car.

When it exceeds 600 rpm, a weight loss effect takes place exponentially as rpm increases.

After that happens there is no amount of voltage that will prevent the device from accelerating to relativistic speeds.

If you built one big enough and kept it at 400 rpm or lower, it would generate Trillions of watts.

[TheRealVerbz]

People would rather spend millions of dollars on studying the sexual habits of frogs or attempting to save some endangered species that is dying from Natural selection.

If just one city, one government, one organization were to be ALLOWED to build these in America, then people's perspective would change regarding this concept.

No community has put this to the test so we can't say it will work or fail until we all try together.

There is much work to be done but it's suppressed because of oil.

[truffm]

but where is the energy coming from?

energy cant be created, only converted

also i dont think anyone has spent millions of dollars specificly studdying the sexual habbits of frogs

[TheRealVerbz]

Unfortunately, communities do spend millions of dollars on the sexual habits of frogs.... and mosquitoes, and other animals.

It's called 'pork barrel spending.'

LOOK THAT UP!

you will be pissed they spend YOUR money on shit that helps NOTHING.

Our society spends BILLIONS of dollars on bullshit like that every month.

Millions.

You're right, energy can't come from 'nowhere'.

Luckily, "nowhere" to you is somewhere to someone else.

[TheRealVerbz]

This is where the energy comes from to power the SEG:

The Searl Effect is the result of two sine waves on x and y axes.

x-on rings, y-on runners.

At zero-line in the cycle, the waves intersect at 90-degrees to each other. This becomes like a linear-motor, the interaction between the two wave-forms on runners and plates.

Two sine-waves intersecting in this manner looks like a circle on a scope, and a spot orbiting in a circle when you slow the cycles down 10,000 cycles per second or more.

[TheRealVerbz]

This is essentially a 2-phase induction motor, but with permanent magnets, and the rare-Earth acting as the electron-reservoir for providing EMF to Endlessly motor the device. It may need a small kick-start, or no kick-start if it is magnetized correctly.

When it reaches an rpm above 600, a weight loss effect takes place exponentially as the rpms increase.

It only takes 1.5 volts at .06 amps to get 200 rpm REGARDLESS of how big the motor is.

[TheRealVerbz]

Every motor we know uses pound for pound force like Newton's Law dictates.

BUT.. Newton's Law is refined when dealing with magnetic fields.

For some reason, when stack magnets into 8 sections or more, it is no longer pound for pound force.

The amount of force required to move 12 magnets around the ring is the SAME amount of force needed to move just ONE magnet.

If u have the correct magnetic configuration, the same amount of force required to move One magnet will move All magnets in that field.

[TheRealVerbz]

So...

If we as a community, as a people, and as a race built one of these just 1 mile in diameter, it will power the nation if not the world.

If you have a 1 mile ring and 10,000 pounds of magnets on the ring, then it will STILL perform at 200 rpm from 1.5 volts at .06 amps.

If you add coils to the outside of the ring so as the magnets pass by they generate electricity,

then that 1.5 volts to power the SEG will create TRILLIONS of watts because we know that as magnets passing by coils = power.

[roxxet12345]

where can i get soft core iron??i won to build a transfomer

[StefSSU]

Dig!!

[goedaschaugst]

Nice Demonstration!

This principle is used in eddy current retarders. Heavy trucks who go alpine routes have this built in. These retarders get hot as every brake does, but they are easier to cool and they are more resistant to the temperatures than other brakes.

cheers

[msdaif]

That's a good application

[comwarrior69]

untill you fri the coil.... or kill the magnets...

[Konig92]

...And you can tell this from his voice and one hand?

[TommeyLeeReed]

This is so stupid, Its call load on the coil when shorted out. just like a generator when loaded up the back emf needs more energy to produce more power.

[platecalifornia]

yeh well i get over 150 text messages a day

[Galv140577]

The lenz effect can be switched on and off by opening/closing the circuit. That could be useful.

[RyuDarragh]

Precisely. It also works if the copper is a tube of copper instead of a shorted coil. Also, take a copper pipe about 1/2 inches in diameter and drop a slightly smaller super magnet into one end... and watch it fall very slowly.

[wayne205stevens]

same as a cordless drill brake!

[pcdsgh]

his accent makes him sound smarter :)

my question: can this effect be used for a mechanical brake? And will such a system generate more heat than a regular brake? (with similar resistance)

[Quicksilvers888]

Yes, it is being used in a bullet train maglev train. Energy cannot be created nor destroyed, so it will generate heat due to electric current from the magnetic field produced but not as great as pads-dirct contact break systme because of the rubbing heat is more efficient transfer of energy from kinetic to heat.

[dizzo95]

Lenz's law - Eddy current

From Wikipedia,

The following is an explanation as to why Lenz's law is true: If the magnetic field associated with this current was in the same direction as the change in magnetic field that created it, these two magnetic fields would combine to give a net magnetic field which would in turn induce a current with twice the magnitude. This process would continue creating infinite current from just moving a magnet; a violation of the law of conservation of energy.

[dizzo95]

I am researching if the law of conservation of energy can change in space within an (almost ) absolute zero kelvin , gravity vacuum field ( with no motion yet ?): wherein : two magnetic fields would combine to give a net magnetic field which would in turn induce a current with twice the magnitude. This process would continue creating infinite current from just moving a magnet; a violation of the law of conservation of energy.

[FreeTalkLive]

That is a good thing to do.

[flashback1234]

that`s what I said but 4 people still gave me the thumps down =S

[variablestatus]

interesting view of the open and closed loop effect.

[inventorr77]

I watched many of your videos and they are simple and well done. Keep it up.

[Jvalentin06]

Another way to show lenzes law is to drop a magnet into a copper pipe and see how long it takes to fall through.

[Libatakelb]

thanks a lot man, you actually helped me understand the concept, much better than reading in books. Keeping posting videos like this!

[kerpal2343]

Actually one hundred years ago the compass was totally owning the seas..

[malibu2001]

by the way this could also be reverse, making electricy. you might have seen it some cords now come with a magnet in the end, to smooth the electricy flow.

[SAMJE123456]

Your right? Magnets are more important to the human race than the simple houses i build. Thank god someone discovered the magnet!.

[chill295]

Magnets are completely useless your right! Its not as though we use them for anything like electric motors, TVs, Speakers, Phones, Computers and least of all navigation! You complete retard! We would be no where without discovering magnetic fields! How do you think your computer works? The hard drive?! How did we navigate the seas hundreds of years ago to discover new places.Please do not build a house anywhere near me...it will probally fall down! :|

[RoadRunnerLaser]

A clear and concise demonstration of Lenz's law.

5*

[Aardaerimus]

Excellent demonstration.

[myvarsity]

Great video brother!

[durian789]

Nicely done. The accent was ok. You havent heard Irish yet.

[coquivagabundo]

I wonder what would happened if you put an LED at the end of the cables coming out from coil. and do it again.

I dont know anything about lenz law, just came acroos this video.

[msdaif]

The LED should turn on if the current is around 10mA. If the current is not enough, then a stronger magnet should be used and/or a coil with more turns.

[seneca67]

nice demo